@Qualifier example

beans.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<context:annotation-config/>

<qualifier value="b"/>
<constructor-arg type="java.lang.String" value="Yan chen"></constructor-arg>
<constructor-arg type="int" value="19"></constructor-arg>
</bean>

package com.vf.sample;

public class WomenFinder {

/**
* @param args
*/

private String name;
private int age;
private final static String DEFAULT_NAME = "Maggie Q";
private final static int DEFAULT_AGE = 18;
public WomenFinder() {
System.out.println("Copy that.I know how to find the correct women.");
name = DEFAULT_NAME;
age = DEFAULT_AGE;
}

public WomenFinder(String name,int age) {
this.name = name;
this.age = age;
}

@Override
public String toString() {
return "Name: " + name + "\nAge: " + age;
}

}

package com.vf.sample;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Required;

public class SexWomenLister {

/**
* @param args
*/
@Autowired
@Qualifier("b")
private WomenFinder womenFinder;

public void setWomenFinder(WomenFinder womenFinder) {
this.womenFinder = womenFinder;
}
public void print() {
System.out.println(womenFinder.toString());
}
}

public class SexWomenLister {

/**
* @param args
*/
private WomenFinder womenFinder;

@Autowired
@Qualifier("b")
public void setWomenFinder(WomenFinder womenFinder) {
this.womenFinder = womenFinder;
}
public void print() {
System.out.println(womenFinder.toString());
}
}

package com.vf.sample;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;

public class SexWomenLister {

/**
* @param args
*/
private WomenFinder womenFinder;

@Autowired
public SexWomenLister(@Qualifier("b") WomenFinder womenFinder) {
this.womenFinder = womenFinder;
}
public void print() {
System.out.println(womenFinder.toString());
}
}

=============================================

package com.vf.sample;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {

/**
* @param args
*/

public static void main(String[] args) {

ApplicationContext apcx = (ApplicationContext) new ClassPathXmlApplicationContext("beans.xml");

SexWomenLister list = apcx.getBean("sexWomenList",SexWomenLister.class);
list.print();

}

Name: Jia Yu
Age: 20

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