从头认识Spring-2.4 基于java的标准注解装配-@Inject-限定器@Named

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这一章节我们来讨论一下基于java的标准注解装配标签@Inject的限定器@Named。

1.domain

蛋糕类：

package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_16;import javax.inject.Named;@Named("myCake")public class Cake {private String name = "";public String getName() {return name;}public void setName(String name) {this.name = name;}}

这里需要注意的是：在Cake类上面需要标注@Named这个标签，标注他是myCake类型

厨师类：

package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_16;import javax.inject.Inject;import javax.inject.Named;public class Chief {private Cake cake = null;@Inject@Named("myCake")public Chief(Cake cake) {this.cake = cake;}private String name = "";public String getName() {return name;}public Cake makeOneCake() {System.out.println(getName() + " make " + cake.getName());return cake;}public void setName(String name) {this.name = name;}}

同样，在厨师类这里注入也需要@Named这个标签来标注注入myCake这个类型。

2.测试类：

package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_16;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.ApplicationContext;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"/com/raylee/my_new_spring/my_new_spring/ch02/topic_1_16/ApplicationContext-test.xml" })public class ChiefTest {@Autowiredprivate ApplicationContext applicationContext;@Testpublic void testChief() {Chief jack = applicationContext.getBean(Chief.class);jack.makeOneCake();}}

3.配置文件

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"xsi:schemaLocation="        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsdhttp://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsdhttp://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><bean class="com.raylee.my_new_spring.my_new_spring.ch02.topic_1_16.Cake"p:name="blueberryCheeseCake" scope="prototype" /><bean id="jack"class="com.raylee.my_new_spring.my_new_spring.ch02.topic_1_16.Chief"p:name="jack" /></beans>

为了测试，我们去掉了bean的id

测试输出：

jack make blueberryCheeseCake

总结：这一章节主要介绍基于java的标准注解装配标签@Inject的限定器@Named。

目录：http://blog.csdn.net/raylee2007/article/details/50611627

我的github：https://github.com/raylee2015/my_new_spring

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