Spring

Akash
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1. Hello World Program

HelloWorld.java

package com.kodnest;
public class HelloWorld {
   private String message;
   public void setMessage(String message){
      this.message  = message;
   }
   public void getMessage(){
      System.out.println("Your Message : " + message);
   }
}

MainApp.java

package com.kodnest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainApp {
   public static void main(String[] args) {
      ApplicationContext context = new ClassPathXmlApplicationContext("Beans.xml");
      HelloWorld obj = (HelloWorld) context.getBean("helloWorld");
      obj.getMessage();
   }
}

2. How to create Spring applcation.

Create Java Class
package com.kodnest;
public class Student {
private String name;
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public void displayInfo(){
    System.out.println("Hello: "+name);
}
}
Create XML File
<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
               http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="studentbean" class="com.kodnest.Student">
<property name="name" value="Raj Mehta"></property>
</bean>
</beans>
Create test class
package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class Test {
public static void main(String[] args) {
    Resource resource=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(resource);
    Student student=(Student)factory.getBean("studentbean");
    student.displayInfo();
}
}
Load jar files required for spring framework

3. Dependency Injection using constructor.

Employee.java

package com.kodnest;
public class Employee {
private int id;
private String name;
public Employee() {System.out.println("Class Created");}
public Employee(int id) {this.id = id;}
public Employee(String name) {  this.name = name;}
public Employee(int id, String name) {
    this.id = id;
    this.name = name;
}
void show(){
    System.out.println(id+" "+name);
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="e" class="com.kodnest.Employee">
<constructor-arg value="10" type="int"></constructor-arg>
</bean>
</beans>

TestSample.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.*;
public class TestSample {
    public static void main(String[] args) {
        Resource r=new ClassPathResource("applicationContext.xml");
        BeanFactory factory=new XmlBeanFactory(r);
        Employee s=(Employee)factory.getBean("e");
        s.show();
    }
}

Output: 10 null

4. Constructor Injection with Dependent Object.

Address.java

package com.kodnest;
public class Address {
private String city;
private String state;
private String country;
public Address(String city, String state, String country) {
    super();
    this.city = city;
    this.state = state;
    this.country = country;
}
public String toString(){
    return city+" "+state+" "+country;
}
}

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private Address address;//Aggregation
public Student() {System.out.println("Student class Created");}
public Student(int id, String name, Address address) {
    super();
    this.id = id;
    this.name = name;
    this.address = address;
}
void show(){
    System.out.println(id+" "+name);
    System.out.println(address.toString());
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="a1" class="com.kodnest.Address">
<constructor-arg value="Bengaluru"></constructor-arg>
<constructor-arg value="Karanataka"></constructor-arg>
<constructor-arg value="India"></constructor-arg>
</bean>
<bean id="e" class="com.kodnest.Student">
<constructor-arg value="12" type="int"></constructor-arg>
<constructor-arg value="Raj"></constructor-arg>
<constructor-arg>
<ref bean="a1"/>
</constructor-arg>
</bean>
</beans>

TestSample.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.*;
public class TestSample {
    public static void main(String[] args) {
        Resource r=new ClassPathResource("applicationContext.xml");
        BeanFactory factory=new XmlBeanFactory(r);
        Student s=(Student)factory.getBean("e");
        s.show();
    }
}

5. Constructor Injection with collection.

Question.java

package com.kodnest;
import java.util.Iterator;
import java.util.List;
public class Question {
private int id;
private String name;
private List<String> answers;
public Question() {}
public Question(int id, String name, List<String> answers) {
    super();
    this.id = id;
    this.name = name;
    this.answers = answers;
}
public void displayInfo(){
    System.out.println(id+" "+name);
    System.out.println("answers are:");
    Iterator<String> itr=answers.iterator();
    while(itr.hasNext()){
        System.out.println(itr.next());
    }
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="q" class="com.kodnest.Question">
<constructor-arg value="111"></constructor-arg>
<constructor-arg value="How are you?"></constructor-arg>
<constructor-arg>
<list>
<value>I am good.</value>
<value>I am fine</value>
</list>
</constructor-arg>
</bean>
</beans>

TestSample.java

package com.kodenst;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class TestSample {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Question q=(Question)factory.getBean("q");
    q.displayInfo();
}
}

6. Constructor Injection with Map

Question.java

package com.kodnest;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
public class Question {
private int id;
private String name;
private Map<String,String> answers;
public Question() {}
public Question(int id, String name, Map<String, String> answers) {
    super();
    this.id = id;
    this.name = name;
    this.answers = answers;
}
public void displayInfo(){
    System.out.println("question id:"+id);
    System.out.println("question name:"+name);
    System.out.println("Answers....");
    Set<Entry<String, String>> set=answers.entrySet();
    Iterator<Entry<String, String>> itr=set.iterator();
    while(itr.hasNext()){
        Entry<String,String> entry=itr.next();
        System.out.println("Answer:"+entry.getKey()+" Posted By:"+entry.getValue());
    }
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="q" class="com.kodnest.Question">
<constructor-arg value="11"></constructor-arg>
<constructor-arg value="How are you?"></constructor-arg>
<constructor-arg>
<map>
<entry key="I am good"  value="Raj Mehta"></entry>
<entry key="I am fine" value="Karan"></entry>
</map>
</constructor-arg>
</bean>
</beans>

TestSample.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class TestSample {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Question q=(Question)factory.getBean("q");
    q.displayInfo();
}
}

7. Program to Inhert Bean in Spring

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private Address address;
public Student() {}
public Student(int id, String name) {
    super();
    this.id = id;
    this.name = name;
}
public Student(int id, String name, Address address) {
    super();
    this.id = id;
    this.name = name;
    this.address = address;
}
void show(){
    System.out.println(id+" "+name);
    System.out.println(address);
}
}

School.java

package com.kodnest;
public class School {
private String addressLine1,city,state,country;
public School(String addressLine1, String city, String state, String country) {
    super();
    this.addressLine1 = addressLine1;
    this.city = city;
    this.state = state;
    this.country = country;
}
public String toString(){
    return addressLine1+" "+city+" "+state+" "+country;
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="e1" class="com.kodenst.Employee">
<constructor-arg value="101"></constructor-arg>
<constructor-arg  value="Raj"></constructor-arg>
</bean>
<bean id="address1" class="com.kodnest.Address">
<constructor-arg value="22,Lake View"></constructor-arg>
<constructor-arg value="Bengaluru"></constructor-arg>
<constructor-arg value="KA"></constructor-arg>
<constructor-arg value="USA"></constructor-arg>
</bean>
<bean id="e2" class="com.kodnest.Employee" parent="e1">
<constructor-arg ref="address1"></constructor-arg>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SampleTest {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Student s1=(Student)factory.getBean("e2");
    s1.show();
}
}

8. Program for Dependency Injection using setter method.

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private String city;
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getCity() {
    return city;
}
public void setCity(String city) {
    this.city = city;
}
void display(){
    System.out.println(id+" "+name+" "+city);
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="obj" class="com.kodnest.Employee">
<property name="id">
<value>4</value>
</property>
<property name="name">
<value>Raj</value>
</property>
<property name="city">
<value>Bengaluru</value>
</property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.*;
public class SampleTest {
    public static void main(String[] args) {
        Resource r=new ClassPathResource("applicationContext.xml");
        BeanFactory factory=new XmlBeanFactory(r);
        Student e=(Student)factory.getBean("obj");
        s.display();
    }
}

9. Program for Setter Injection with Dependent Object.

School.java

package com.kodnest;
public class School {
private String addressLine1,city,state,country;
//getters and setters
public String toString(){
    return addressLine1+" "+city+" "+state+" "+country;
}

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private Address address;
//setters and getters
void displayInfo(){
    System.out.println(id+" "+name);
    System.out.println(address);
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="address1" class="com.kodnest.Address">
<property name="addressLine1" value="31,Lake View"></property>
<property name="city" value="Bengaluru"></property>
<property name="state" value="KA"></property>
<property name="country" value="India"></property>
</bean>
<bean id="obj" class="com.kodnest.Employee">
<property name="id" value="1"></property>
<property name="name" value="Raj Mehta"></property>
<property name="address" ref="address1"></property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SampleTest {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Student s=(Student)factory.getBean("obj");
    s.displayInfo();
}
}

10. Program for Setter Injection using Collection.

Question.java

package com.kodnest;
import java.util.Iterator;
import java.util.List;
public class Question {
private int id;
private String name;
private List<String> answers;
//setters and getters
public void displayInfo(){
    System.out.println(id+" "+name);
    System.out.println("answers are:");
    Iterator<String> itr=answers.iterator();
    while(itr.hasNext()){
        System.out.println(itr.next());
    }
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="q" class="com.kodnest.Question">
<property name="id" value="1"></property>
<property name="name" value="How are you?"></property>
<property name="answers">
<list>
<value>I am good.</value>
<value>I am fine.</value>
</list>
</property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SampleTest {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Question q=(Question)factory.getBean("q");
    q.displayInfo();
}
}

11. Program for Setter Injection using Map.

Question.java

package com.kodnest;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.Map.Entry;
public class Question {
private int id;
private String name;
private Map<String,String> answers;
//getters and setters
public void displayInfo(){
    System.out.println("question id:"+id);
    System.out.println("question name:"+name);
    System.out.println("Answers....");
    Set<Entry<String, String>> set=answers.entrySet();
    Iterator<Entry<String, String>> itr=set.iterator();
    while(itr.hasNext()){
        Entry<String,String> entry=itr.next();
        System.out.println("Answer:"+entry.getKey()+" Posted By:"+entry.getValue());
    }
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="q" class="com.kodnest.Question">
<property name="id" value="1"></property>
<property name="name" value="How are you?"></property>
<property name="answers">
<map>
<entry key="I am fine"  value="Raj Mehta"></entry>
<entry key="I am good" value="Karan"></entry>
</map>
</property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SampleTest {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    Question q=(Question)factory.getBean("q");
    q.displayInfo();
}
}

12. Program for Autowiring.

B.java

package org.kodnest;
public class B {
B(){System.out.println("b is created");}
void print(){System.out.println("hello b");}
}

A.java

package org.kodnest;
public class A {
B b;
A(){System.out.println("a is created");}
public B getB() {
    return b;
}
public void setB(B b) {
    this.b = b;
}
void print(){System.out.println("hello a");}
void display(){
    print();
    b.print();
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="b" class="org.kodnest.B"></bean>
<bean id="a" class="org.kodnest.A" autowire="byName"></bean>
</beans>

SampleTest.java

package org.kodnest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SampleTest {
public static void main(String[] args) {
    ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
    A a=context.getBean("a",A.class);
    a.display();
}
}

13. Program for Spring jdbcTemplate

Create table
create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
}

StudentDao.java

package com.kodnest;
import org.springframework.jdbc.core.JdbcTemplate;
public class StudentDao {
private JdbcTemplate jdbcTemplate;
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
    this.jdbcTemplate = jdbcTemplate;
}
public int saveStudent(Stuednt s){
    String query="insert into student values(
    '"+s.getId()+"','"+s.getName()+"','"+s.getMarks()+"')";
    return jdbcTemplate.update(query);
}
public int updateStudent(Student s){
    String query="update student set
    name='"+s.getName()+"',marks='"+s.getMarks()+"' where id='"+s.getId()+"' ";
    return jdbcTemplate.update(query);
}
public int deleteStudent(Student s){
    String query="delete from student where id='"+s.getId()+"' ";
    return jdbcTemplate.update(query);
}
}

applicationContext.java

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="edao" class="com.kodnest.StudentDao">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SampleTest {
public static void main(String[] args) {
    ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
    StudentDao dao=(StudentDao)ctx.getBean("edao");
    int status=dao.saveStudent(new Student(10,"Raj",35));
    System.out.println(status);
}
}

14. Program for PreparedStatement in Spring.

create table
create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
}

StudentDao.java

package com.kodnest;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.PreparedStatementCallback;
public class StudentDao {
private JdbcTemplate jdbcTemplate;
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
    this.jdbcTemplate = jdbcTemplate;
}
public Boolean saveStudentByPreparedStatement(final Student s){
    String query="insert into student values(?,?,?)";
    return jdbcTemplate.execute(query,new PreparedStatementCallback<Boolean>(){
    @Override
    public Boolean doInPreparedStatement(PreparedStatement ps)
            throws SQLException, DataAccessException {
        ps.setInt(1,s.getId());
        ps.setString(2,s.getName());
        ps.setFloat(3,s.getMarks());
        return ps.execute();
    }
    });
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="edao" class="com.kodnest.StudentDao">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SampleTest {
public static void main(String[] args) {
    ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
    StudentDao dao=(StudentDao)ctx.getBean("edao");
    dao.saveEmployeeByPreparedStatement(new Student(18,"Karan",32));
}
}

15. Program for ResultSetExtractor Interface to show all records of the table

create table
create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
}

StudentDao.java

package com.kodnest;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
public class StudentDao {
private JdbcTemplate template;
public void setTemplate(JdbcTemplate template) {
    this.template = template;
}
public List<Student> getAllStudent(){
 return template.query("select * from student",new ResultSetExtractor<List<Employee>>(){
    @Override
     public List<Employee> extractData(ResultSet rs) throws SQLException,
            DataAccessException {
        List<Student> list=new ArrayList<Student>();
        while(rs.next()){
        Student s=new Student();
        s.setId(rs.getInt(1));
        s.setName(rs.getString(2));
        s.setMarks(rs.getInt(3));
        list.add(e);
        }
        return list;
        }
    });
  }
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="sdao" class="com.kodnest.StudentDao">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SampleTest {
public static void main(String[] args) {
    ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
    StudentDao dao=(StudentDao)ctx.getBean("sdao");
    List<Student> list=dao.getAllStudent();
    for(Student s:list)
        System.out.println(s);
    }
}

16. Program for RowMapper Interface to show all records of the table.

create table
create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
public String toString(){
    return id+" "+name+" "+marks;
}
}

StudentDao.java

package com.kodnest;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
public class StudentDao {
private JdbcTemplate template;
public void setTemplate(JdbcTemplate template) {
    this.template = template;
}
public List<Student> getAllStudentRowMapper(){
 return template.query("select * from student",new RowMapper<Employee>(){
    @Override
    public Student mapRow(ResultSet rs, int rownumber) throws SQLException {
        Student s=new Student();
        s.setId(rs.getInt(1));
        s.setName(rs.getString(2));
        s.setMarks(rs.getInt(3));
        return e;
    }
    });
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="edao" class="com.student.StudentDao">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean>
</beans>

SampleTest.java

package com.kodnest;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class SampleTest {
public static void main(String[] args) {
    ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
    StudentDao dao=(StudentDao)ctx.getBean("edao");
    List<Student> list=dao.getAllStudentRowMapper();
    for(Student s:list)
        System.out.println(s);
}
}

17. Program for NamedParameterJDBCTemplate class.

create table
create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
}

StudentDao.java

package com.kodnest;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.PreparedStatementCallback;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import java.util.*;
public class StudentDao {
NamedParameterJdbcTemplate template;
public StudentDao(NamedParameterJdbcTemplate template) {
        this.template = template;
}
public  void save (Student s){
String query="insert into student values (:id,:name,:marks)";
Map<String,Object> map=new HashMap<String,Object>();
map.put("id",s.getId());
map.put("name",s.getName());
map.put("marks",s.getMarks());
template.execute(query,map,new PreparedStatementCallback() {
    @Override
    public Object doInPreparedStatement(PreparedStatement ps)
            throws SQLException, DataAccessException {
        return ps.executeUpdate();
    }
});
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jtemplate"
 class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
<constructor-arg ref="ds"></constructor-arg>
</bean>
<bean id="sdao" class="com.kodnest.StudentDao">
<constructor-arg>
<ref bean="jtemplate"/>
</constructor-arg>
</bean>
</beans>

SimpleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SimpleTest {
  public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    StudentDao dao=(StudentDao)factory.getBean("sdao");
    dao.save(new Emp(23,"raj",50));
  }
}

18. Program for SimpleJDBCTemplate class

create table

create table student(
id number(10),
name varchar2(100),
marks number(10)
);

Student.java

package com.kodnest;
public class Student {
private int id;
private String name;
private float marks;
//no-arg and parameterized constructors
//getters and setters
}

StudentDao.java

package com.kodnest;
import org.springframework.jdbc.core.simple.SimpleJdbcTemplate;
public class StudentDao {
SimpleJdbcTemplate template;
public StudentDao(SimpleJdbcTemplate template) {
        this.template = template;
}
public int update (Student s){
String query="update student set name=? where id=?";
return template.update(query,e.getName(),e.getId());
}
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:xe" />
<property name="username" value="system" />
<property name="password" value="oracle" />
</bean>
<bean id="jtemplate" class="org.springframework.jdbc.core.simple.SimpleJdbcTemplate">
<constructor-arg ref="ds"></constructor-arg>
</bean>
<bean id="sdao" class="com.kodnest.StudentDao">
<constructor-arg>
<ref bean="jtemplate"/>
</constructor-arg>
</bean>
</beans>

SimpleTest.java

package com.kodnest;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
public class SimpleTest {
public static void main(String[] args) {
    Resource r=new ClassPathResource("applicationContext.xml");
    BeanFactory factory=new XmlBeanFactory(r);
    StudentDao dao=(StudentDao)factory.getBean("sdao");
    int status=dao.update(new Student(3,"Raj",37));
    System.out.println(status);
}
}

19. Program for SPEL using operator.

import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
public class SimpleTest {
public static void main(String[] args) {
ExpressionParser parser = new SpelExpressionParser();
//arithmetic operator
System.out.println(parser.parseExpression("'Welcome to SPEL'+'!'").getValue());
System.out.println(parser.parseExpression("10 * 10/2").getValue());
System.out.println(parser.parseExpression("'Today is: '+ new java.util.Date()").getValue());
//logical operator
System.out.println(parser.parseExpression("true and true").getValue());
//Relational operator
System.out.println(parser.parseExpression("'sonoo'.length()==5").getValue());
}
}

20. Program for SPEL using variable.

calculation.java

public class Calculation {
private int number;
public int getNumber() {
    return number;
}
public void setNumber(int number) {
    this.number = number;
}
public int cube(){
    return number*number*number;
}
}

SimpleTest.java

import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
public class SimpleTest {
public static void main(String[] args) {
Calculation calculation=new Calculation();
StandardEvaluationContext context=new StandardEvaluationContext(calculation);
ExpressionParser parser = new SpelExpressionParser();
parser.parseExpression("number").setValue(context,"5");
System.out.println(calculation.cube());
}
}

22. Program for Spring MVC Multiple View Page.

Adding dependencies to pom.xml

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>3.0-alpha-1</version>
</dependency>
Creating the request page

index.jsp

<html>
<body>
<a href="hello">Click Now.</a>
</body>
</html>
Creating controller class

HelloController.java

package com.kodnest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloController {
@RequestMapping("/hello")
    public String redirect()
    {
        return "firstpage";
    }
@RequestMapping("/helloopage")
public String display()
{
    return "secondpage";
}
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>SpringMVC</display-name>
   <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Defining bean in xml file

spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- Provide support for component scanning -->
    <context:component-scan base-package="com.kodnest" />
    <!--Provide support for conversion, formatting and validation -->
    <mvc:annotation-driven/>
<!-- Define Spring MVC view resolver -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
     </bean>
</beans>

firstpage.jsp

<html>
<body>
<a href="helloagain">Spring Tutorials</a>
</body>
</html>

secondpage.jsp

<html>
<body>
<p>Welcome to Spring</p>
</body>
</html>

23. Spring MVC Program

Adding dependencies to pom.xml
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>3.0-alpha-1</version>
</dependency>
Creating request page

index.jsp

<html>
<body>
<form action="hello">
UserName : <input type="text" name="name"/> <br><br>
Password : <input type="text" name="pass"/> <br><br>
<input type="submit" name="submit">
</form>
</body>
</html>
Creating controller class

MVController.java

package com.kodnest;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class MVController {
    @RequestMapping("/hello")
    public String display(HttpServletRequest req,Model m)
    {
        //read the provided form data
        String name=req.getParameter("name");
        String pass=req.getParameter("pass");
        if(pass.equals("admin"))
        {
            String msg="Hello "+ name;
            //add a message to the model
            m.addAttribute("message", msg);
            return "firstpage";
        }
        else
        {
            String msg="Sorry "+ name+". You entered an incorrect password";
            m.addAttribute("message", msg);
            return "errorpage";
        }
    }
}

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>SpringMVC</display-name>
   <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
Defining bean in xml file

spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- Provide support for component scanning -->
    <context:component-scan base-package="com.kodnest" />
    <!--Provide support for conversion, formatting and validation -->
    <mvc:annotation-driven/>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
     </bean>
</beans>

firstpage.jsp

<html>
<body>
${message}
</body>
</html>

errorpage.jsp

<html>
<body>
${message}
<br><br>
<jsp:include page="/index.jsp"></jsp:include>
</body>
</html>

24. Spring MVC Form Text Field Program.

Adding dependencies to pom.xml
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.1.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>3.0-alpha-1</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>
<dependency>
    <groupId>org.apache.tomcat</groupId>
    <artifactId>tomcat-jasper</artifactId>
    <version>9.0.12</version>
</dependency>
Creating bean class

Student.java

package com.kodnest;
public class Student {
    private String firstName;
    private String lastName;
    public Student()
    {
    }
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
}
Creating student controller
package com.kodnest;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
@RequestMapping("/student")
@Controller
public class StudentController {
    @RequestMapping("/studentForm")
public String bookingForm(Model model)
{
      //create a Student object
    Student std=new Student();
      //provide reservation object to the model
    model.addAttribute("student", std);
    return "student-page";
}
@RequestMapping("/submitForm")
// @ModelAttribute binds form data to the object
public String submitForm(@ModelAttribute("student") Student std)
{
    return "confirmation-form";
}
}
Defining bean in the xml file

spring-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- Provide support for component scanning -->
    <context:component-scan base-package="com.kodnest" />
    <!--Provide support for conversion, formatting and validation -->
    <mvc:annotation-driven/>
    <!-- Define Spring MVC view resolver -->
     <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
     </bean>
</beans>
Creating request page

index.jsp

<!DOCTYPE html>
<html>
<head>
    <title>Student Registration Form</title>
</head>
<body>
<a href="student/studentForm">Click here for student registration.</a>
</body>
</html>

student-page.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE html>
<html>
<head>
    <title>Student Registration Form</title>
</head>
<h3> Student Form</h3>
<body>
    <form:form action="submitForm" modelAttribute="reservation">
        First name: <form:input path="firstName" />
        <br><br>
        Last name: <form:input path="lastName" />
        <br><br>
        <input type="submit" value="Submit" />
    </form:form>
</body>
</html>

confirmation-page.jsp

<!DOCTYPE html>
<html>
<body>
<p>Your registration successfully. Please, re-check the details.</p>
First Name : ${student.firstName} <br>
Last Name : ${student.lastName}
</body>
</html>

25. Spring MVC CRUD Example

Creating bean class

Employee.java

package com.kodnest.beans;
public class Employee {
private int id;
private String name;
private float salary;
private String designation;
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public float getSalary() {
    return salary;
}
public void setSalary(float salary) {
    this.salary = salary;
}
public String getDesignation() {
    return designation;
}
public void setDesignation(String designation) {
    this.designation = designation;
}
}
Creating controller class
package com.kodenst.controllers;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.javatpoint.beans.Emp;
import com.javatpoint.dao.EmpDao;
@Controller
public class EmpController {
    @Autowired
    EmpDao dao;//will inject dao from XML file
    /*It displays a form to input data, here "command" is a reserved request attribute
     *which is used to display object data into form
     */
    @RequestMapping("/empform")
    public String showform(Model m){
        m.addAttribute("command", new Emp());
        return "empform";
    }
    /*It saves object into database. The @ModelAttribute puts request data
     *  into model object. You need to mention RequestMethod.POST method
     *  because default request is GET*/
    @RequestMapping(value="/save",method = RequestMethod.POST)
    public String save(@ModelAttribute("emp") Emp emp){
        dao.save(emp);
        return "redirect:/viewemp";//will redirect to viewemp request mapping
    }
    /* It provides list of employees in model object */
    @RequestMapping("/viewemp")
    public String viewemp(Model m){
        List<Emp> list=dao.getEmployees();
        m.addAttribute("list",list);
        return "viewemp";
    }
    /* It displays object data into form for the given id.
     * The @PathVariable puts URL data into variable.*/
    @RequestMapping(value="/editemp/{id}")
    public String edit(@PathVariable int id, Model m){
        Emp emp=dao.getEmpById(id);
        m.addAttribute("command",emp);
        return "empeditform";
    }
    /* It updates model object. */
    @RequestMapping(value="/editsave",method = RequestMethod.POST)
    public String editsave(@ModelAttribute("emp") Emp emp){
        dao.update(emp);
        return "redirect:/viewemp";
    }
    /* It deletes record for the given id in URL and redirects to /viewemp */
    @RequestMapping(value="/deleteemp/{id}",method = RequestMethod.GET)
    public String delete(@PathVariable int id){
        dao.delete(id);
        return "redirect:/viewemp";
    }
}
Creating DAO class
package com.kodnest.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import com.javatpoint.beans.Emp;
public class EmpDao {
JdbcTemplate template;
public void setTemplate(JdbcTemplate template) {
    this.template = template;
}
public int save(Emp p){
    String sql="insert into Empp(name,salary,designation) values('"+p.getName()+"',"+p.getSalary()+",'"+p.getDesignation()+"')";
    return template.update(sql);
}
public int update(Emp p){
    String sql="update Empp set name='"+p.getName()+"', salary="+p.getSalary()+",designation='"+p.getDesignation()+"' where id="+p.getId()+"";
    return template.update(sql);
}
public int delete(int id){
    String sql="delete from Empp where id="+id+"";
    return template.update(sql);
}
public Emp getEmpById(int id){
    String sql="select * from Empp where id=?";
    return template.queryForObject(sql, new Object[]{id},new BeanPropertyRowMapper<Emp>(Emp.class));
}
public List<Emp> getEmployees(){
    return template.query("select * from Empp",new RowMapper<Emp>(){
        public Emp mapRow(ResultSet rs, int row) throws SQLException {
            Emp e=new Emp();
            e.setId(rs.getInt(1));
            e.setName(rs.getString(2));
            e.setSalary(rs.getFloat(3));
            e.setDesignation(rs.getString(4));
            return e;
        }
    });
}
}
Defining bean in xml file
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.javatpoint.controllers"></context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/test"></property>
<property name="username" value=""></property>
<property name="password" value=""></property>
</bean>
<bean id="jt" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="ds"></property>
</bean>
<bean id="dao" class="com.kodnest.dao.EmpDao">
<property name="template" ref="jt"></property>
</bean>
</beans>

empform.jsp

<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
        <h1>Add New Employee</h1>
       <form:form method="post" action="save">
        <table >
         <tr>
          <td>Name : </td>
          <td><form:input path="name"  /></td>
         </tr>
         <tr>
          <td>Salary :</td>
          <td><form:input path="salary" /></td>
         </tr>
         <tr>
          <td>Designation :</td>
          <td><form:input path="designation" /></td>
         </tr>
         <tr>
          <td> </td>
          <td><input type="submit" value="Save" /></td>
         </tr>
        </table>
       </form:form>

empeditform.jsp

<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
        <h1>Edit Employee</h1>
       <form:form method="POST" action="/SpringMVCCRUDSimple/editsave">
        <table >
        <tr>
        <td></td>
         <td><form:hidden  path="id" /></td>
         </tr>
         <tr>
          <td>Name : </td>
          <td><form:input path="name"  /></td>
         </tr>
         <tr>
          <td>Salary :</td>
          <td><form:input path="salary" /></td>
         </tr>
         <tr>
          <td>Designation :</td>
          <td><form:input path="designation" /></td>
         </tr>
         <tr>
          <td> </td>
          <td><input type="submit" value="Edit Save" /></td>
         </tr>
        </table>
       </form:form>

viewemp.jsp

<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
   <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<h1>Employees List</h1>
<table border="2" width="70%" cellpadding="2">
<tr><th>Id</th><th>Name</th><th>Salary</th><th>Designation</th><th>Edit</th><th>Delete</th></tr>
   <c:forEach var="emp" items="${list}">
   <tr>
   <td>${emp.id}</td>
   <td>${emp.name}</td>
   <td>${emp.salary}</td>
   <td>${emp.designation}</td>
   <td><a href="editemp/${emp.id}">Edit</a></td>
   <td><a href="deleteemp/${emp.id}">Delete</a></td>
   </tr>
   </c:forEach>
   </table>
   <br/>
   <a href="empform">Add New Employee</a>

26. Spring MVC Validation Program

Creating bean class
package com.kodnest;
import javax.validation.constraints.Size;
public class Employee {
    private String name;
    @Size(min=1,message="required")
    private String pass;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPass() {
        return pass;
    }
    public void setPass(String pass) {
        this.pass = pass;
    }
}
Creating controller class
package com.kodnest;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class EmployeeController {
    @RequestMapping("/hello")
    public String display(Model m)
    {
        m.addAttribute("emp", new Employee());
        return "viewpage";
    }
    @RequestMapping("/helloagain")
    public String submitForm( @Valid @ModelAttribute("emp") Employee e, BindingResult br)
    {
        if(br.hasErrors())
        {
            return "viewpage";
        }
        else
        {
        return "final";
        }
    }
}
Defining bean in xml file
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- Provide support for component scanning -->
    <context:component-scan base-package="com.kodenst" />
    <!--Provide support for conversion, formatting and validation -->
    <mvc:annotation-driven/>
    <!-- Define Spring MVC view resolver -->
     <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
     </bean>
</beans>

viewpage.jsp

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<html>
<head>
<style>
.error{color:red}
</style>
</head>
<body>
<form:form action="helloagain" modelAttribute="emp">
Username: <form:input path="name"/> <br><br>
Password(*): <form:password path="pass"/>
<form:errors path="pass" cssClass="error"/><br><br>
<input type="submit" value="submit">
</form:form>
</body>
</html>

final.jsp

<html>
<body>
Username: ${emp.name} <br><br>
Password: ${emp.pass}
</body>
</html>

27. Spring MVC Tiles Program

Creating bean class
package com.kodnest.form;
public class Contact {
    private String firstname;
    private String lastname;
    private String email;
    private String telephone;
    public String getEmail() {
        return email;
    }
    public String getTelephone() {
        return telephone;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }
    public String getFirstname() {
        return firstname;
    }
    public String getLastname() {
        return lastname;
    }
    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }
    public void setLastname(String lastname) {
        this.lastname = lastname;
    }
}
Creating controller class

TilesController

package com.kodnest.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class TilesController {
    @RequestMapping("/hello")
    public String helloWorld(Model m) {
        String message = "Hello World, Spring MVC @ Javatpoint";
        m.addAttribute("message", message);
        return "hello";
    }
}

contactcontroller.java

package com.kodnest.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.SessionAttributes;
import com.kodnest.form.Contact;
@Controller
@SessionAttributes
public class ContactController {
    @RequestMapping(value = "/addContact", method = RequestMethod.POST)
    public String addContact(@ModelAttribute("contact") Contact contact, BindingResult result) {
        //write the code here to add contact
        return "redirect:contact.html";
    }
    @RequestMapping("/contact")
    public String showContacts(Model m) {
        m.addAttribute("command", new Contact());
        return "contact";
    }
}
Defining bean in xml file
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="com.kodnestt.controller" />
<bean id="viewResolver" class="org.springframework.web.servlet.view.tiles3.TilesViewResolver"/>
<bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles3.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles.xml</value>
</list>
</property>
</bean>
</beans>

tiles.xml 

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE tiles-definitions PUBLIC
       "-//Apache Software Foundation//DTD Tiles Configuration 2.0//EN"
       "http://tiles.apache.org/dtds/tiles-config_2_0.dtd">
<tiles-definitions>
    <definition name="base.definition"
        template="/WEB-INF/jsp/layout.jsp">
        <put-attribute name="title" value="" />
        <put-attribute name="menu" value="/WEB-INF/jsp/menu.jsp" />
        <put-attribute name="body" value="" />
    </definition>
    <definition name="contact" extends="base.definition">
        <put-attribute name="title" value="Contact Manager" />
        <put-attribute name="body" value="/WEB-INF/jsp/contact.jsp" />
    </definition>
    <definition name="hello" extends="base.definition">
        <put-attribute name="title" value="Hello Spring MVC" />
        <put-attribute name="body" value="/WEB-INF/jsp/hello.jsp" />
    </definition>
</tiles-definitions>

index.jsp

<a href="contact.html">Contact</a>

contact.jsp

<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
    <title>Spring Tiles Contact Form</title>
</head>
<body>
<h2>Contact Manager</h2>
<form:form method="post" action="addContact.html">
    <table>
    <tr>
        <td><form:label path="firstname">First Name</form:label></td>
        <td><form:input path="firstname" /></td>
    </tr>
    <tr>
        <td><form:label path="lastname">Last Name</form:label></td>
        <td><form:input path="lastname" /></td>
    </tr>
    <tr>
        <td><form:label path="lastname">Email</form:label></td>
        <td><form:input path="email" /></td>
    </tr>
    <tr>
        <td><form:label path="lastname">Telephone</form:label></td>
        <td><form:input path="telephone" /></td>
    </tr>
    <tr>
        <td colspan="2">
            <input type="submit" value="Add Contact"/>
        </td>
    </tr>
</table>
</form:form>
</body>
</html>

layout.jsp

<%@ taglib uri="http://tiles.apache.org/tags-tiles" prefix="tiles"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title><tiles:insertAttribute name="title" ignore="true" /></title>
</head>
<body>
        <div style="float:left;padding:10px;width:15%;"><tiles:insertAttribute name="menu" /></div>
        <div style="float:left;padding:10px;width:80%;border-left:1px solid pink;">
        <tiles:insertAttribute name="body" /></div>
</body>
</html>

27. Program for JAXB Integration

Student.java

package com.kodnest;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name="student")
public class Student {
private int id;
private String name;
private float marks;
@XmlAttribute(name="id")
public int getId() {
    return id;
}
public void setId(int id) {
    this.id = id;
}
@XmlElement(name="name")
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
@XmlElement(name="marks")
public float getMarks() {
    return marks;
}
public void setMarks(float marks) {
    this.marks = marks;
}
}

applicationContext.java

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:oxm="http://www.springframework.org/schema/oxm"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/oxm
        http://www.springframework.org/schema/oxm/spring-oxm-3.0.xsd">
        <oxm:jaxb2-marshaller id="jaxbMarshallerBean">
            <oxm:class-to-be-bound name="com.kodnest.Studnet"/>
        </oxm:jaxb2-marshaller>
</beans>

School.java

package com.kodnest;
import java.io.FileWriter;
import java.io.IOException;
import javax.xml.transform.stream.StreamResult;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.oxm.Marshaller;
public class School{
 public static void main(String[] args)throws IOException{
  ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
  Marshaller marshaller = (Marshaller)context.getBean("jaxbMarshallerBean");
  Student s=new Student();
  s.setId(11);
  s.setName("Raj Mehta");
  s.setMarks(10);
  marshaller.marshal(employee, new StreamResult(new FileWriter("student.xml")));
  System.out.println("XML Created Sucessfully");
 }
}
Output
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<student id="11">
<name>Raj Mehta</name>
<marks>10</marks>
</employee>

28. Program to send mail

Mailone.java

package com.kodnest;
import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;
public class Mailone{
    private MailSender mailSender;
    public void setMailSender(MailSender mailSender) {
        this.mailSender = mailSender;
    }
    public void sendMail(String from, String to, String subject, String msg) {
        //creating message
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(msg);
        //sending message
        mailSender.send(message);
    }
}

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
  <property name="host" value="smtp.gmail.com" />
    <property name="username" value="[email protected]" />
    <property name="password" value="yourgmailpassword" />
    <property name="javaMailProperties">
       <props>
              <prop key="mail.smtp.auth">true</prop>
              <prop key="mail.smtp.socketFactory.port">465</prop>
              <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
              <prop key="mail.smtp.port">465</prop>
        </props>
    </property>
</bean>
<bean id="mailMail" class="com.kodnest.Mailone">
    <property name="mailSender" ref="mailSender" />
</bean>
</beans>

SampleTest.java

package com.kodnest;
import org.springframework.beans.factory.*;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.*;
public class SampleTest {
public static void main(String[] args) {
Resource r=new ClassPathResource("applicationContext.xml");
BeanFactory b=new XmlBeanFactory(r);
Mailone m=(Mailone)b.getBean("mailone");
String sender="[email protected]";//write here sender gmail id
String receiver="[email protected]";//write here receiver id
m.sendMail(sender,receiver,"hi","welcome");
System.out.println("success");
}
}
How to run the program
  • Load the spring jar files for core and java mail
  • Load the mail.jar and activation.jar
  • Change the username and password property in the applicationContext.xml file, specifying your gmail id and password.
  • Change the sender gmail id and receivermail id in the SampleTest.java file.
  • Compile and Run the Test class

29. Program to send mails to multiple receivers.

You can send mails to multiple receivers by the help of SimpleMailMessage class. The setTo(String[] receivers) method of SimpleMailMessage class is used to send message to multiple receivers. 

public void MultipleMail(String from, String[] to, String subject, String msg) {
       //creating message
    SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
    message.setTo(to);//passing array of recipients
    message.setSubject(subject);
    message.setText(msg);
       //sending message
    mailSender.send(message);
}

30. Program for Spring MimeMessagePreparator.

The applicationContext.xml and SampleTest.java files are same as given in example 28.

import javax.mail.Message;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessagePreparator;
public class Mailone{
    private JavaMailSender mailSender;
    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }
    public void sendMail(final String from, final String to,final String subject,final String msg) {
        MimeMessagePreparator messagePreparator = new MimeMessagePreparator() {
                public void prepare(MimeMessage mimeMessage) throws Exception {
                   mimeMessage.setRecipient(Message.RecipientType.TO,new InternetAddress(to));
                   mimeMessage.setFrom(new InternetAddress(from));
                   mimeMessage.setSubject(subject);
                   mimeMessage.setText(msg);
                }
        };
        mailSender.send(messagePreparator);
    }
}

31. Program to send Attachment using Spring MimeMessageHelper

The applicationContext.xml and SampleTest.java files are same as given in example 28. 

import java.io.File;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
public class Mailone{
    private JavaMailSender mailSender;
    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }
    public void sendMail(final String from, final String to,final String subject,final String msg) {
        try{
        MimeMessage message = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        helper.setTo(to);
        helper.setSubject(subject);
        helper.setText(msg);
        // attach the file
        FileSystemResource file = new FileSystemResource(new File("c:/one.jpg"));
        helper.addAttachment("image.jpg", file);//image will be sent by this name
        mailSender.send(message);
        }catch(MessagingException e){e.printStackTrace();}
    }
}

32. Login using Spring and Strut2.

index.jsp

<%@ taglib uri="/struts-tags" prefix="s"%>
<s:form action="login">
<s:textfield name="name" label="Username"></s:textfield>
<s:password name="password" label="Password"></s:password>
<s:submit value="login"></s:submit>
</s:form>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <filter>
    <filter-name>struts2</filter-name>
    <filter-class>
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    </filter-class>
  </filter>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  <filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  </web-app>

strut.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="def" extends="struts-default">
<action name="login" class="login">
<result name="success">login_success.jsp</result>
<result name="error">login_error.jsp</result>
</action>
</package>
</struts>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
    xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="login" class="com.kodnest.Login">
<property name="successmessage" value="You are successfully logged in!"></property>
<property name="errormessage" value="Sorry, username or password error!"></property>
</bean>
</beans>

Login.java

package com.kodenst;
public class Login {
private String name,password,successmessage,errormessage;
//setters and getters
public String execute(){
    if(password.equals("kodenst")){
        return "success";
    }
    else{
        return "error";
    }
}
}

Login_success.jsp

<%@ taglib uri="/struts-tags" prefix="s"%>
${successmessage}
<br/>
Welcome, <s:property value="name"/><br/>

Login_error.jsp

${errormessage}
<jsp:include page="index.jsp"></jsp:include>
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