spring setter injection example with xml configuration

SPRING SETTER INJECTION EXAMPLE 

WITH XML CONFIGURATION.

HELLO READERS, In this spring tutorial we are going to learn about spring setter injection. 

In this example we are going to learn how to set value to a bean property through setter injection. 

Consider the below example Players  bean class which contains fullName, role and board attributes.

Players.java

package com.TheTechMatin.Entity;

public class Players {

     private String fullName;

     private String role;

     private String board;

     public String getFullName() {

           return fullName;

     }

     public void setFullName(String fullName) {

           this.fullName = fullName;

     }

     public String getRole() {

           return role;

     }

     public void setRole(String role) {

           this.role = role;

     }

     public String getBoard() {

           return board;

     }

     public void setBoard(String board) {

           this.board = board;

     }

     @Override

     public String toString() {

           return "Players [fullName=" + fullName + ", role=" + role + ", board=" + board + "]";

     }

}

The Players class has three attributes i.e., name, role and board. For all the attributes setter & getter method is generated via ECLIPSE 2019-06. The toString() method is used to represent textual form the Players object.

The applicationContext.xml fie is used to do the spring bean configuration. The below xml file shows how to set/assign a value to bean property through spring setter injection.

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="player" class="com.TheTechMatin.Entity.Players">

           <property name="fullName" value="Sir Ravindra Jadeja"></property>

           <property name="role" value="All Rounder"></property>

           <property name="board" value="BCCI"></property>

     </bean>

</beans>

The id attribute of the bean element is used to specify the bean name and class attribute is used to specify the fully qualified class name of the bean.

The property is the sub-element of bean element which is used to inject property value via setter injection, the name attribute of the property element represents the bean(class) attribute(for example String fullName and so on.) and value attribute is used to specify the corresponding property value.

Here in this example we set “Sir Ravindra Jadeja” for fullName attribute of Players class similarly “All Rounder” for role attribute and  “BCCI” for board attribute.

Now executing the TestApp.java to  test the application.

TestApp.java

package com.TheTechMatin.Entity;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestApp {

     public static void main(String[] args) {

//load configuration file

           ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

//jus printing msg

           System.out.println("Hello Welcome To Sping!");

//get the bean from applicationContext.xml

           Players player = context.getBean(Players.class);

//print the Players attributes value

           System.out.println(player);

//close the context

           context.close();

     }

}

So when we execute the main class the following output will be displayed on the console.

Hello Welcome To Sping!

Players [fullName=Sir Ravindra Jadeja, role=All Rounder, board=BCCI]

Tested On Eclipse IDE 2019-06.