这一章节我们来讨论一下注解装配的@autowired是如何通过set方法或者其它方法注入？
1.domain
蛋糕类：（不变）
package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_8;
public class Cake {
private String name = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
厨师类：
package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_8;
import org.springframework.beans.factory.annotation.Autowired;
public class Chief {
private Cake cake = null;
@Autowired
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;
}
}
这里须要注意的是，这里通过@Autowired标签在构造器方法注入cake对象
2.測试类：
package com.raylee.my_new_spring.my_new_spring.ch02.topic_1_8; 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_8/ApplicationContext-test.xml" })
public class ChiefTest { @Autowired
private ApplicationContext applicationContext; @Test
public void testChief() {
Chief jack = applicationContext.getBean(Chief.class);
jack.makeOneCake();
}
}
3.配置文件：（重点）
<? 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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
http://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 id="blueberryCheeseCake"
class="com.raylee.my_new_spring.my_new_spring.ch02.topic_1_8.Cake"
p:name="blueberryCheeseCake" scope="prototype" /> <bean id="jack"
class="com.raylee.my_new_spring.my_new_spring.ch02.topic_1_8.Chief"
p:name="jack" />
</beans>
尽管我们上面这里定义了两个bean。可是jack那个bean不再须要通过<property/>标签来注入blueberryCheeseCake这个bean，而是通过Chief里面的@Autowired标签来完毕注入。
測试输出：
jack make blueberryCheeseCake
总结：这一章节主要介绍@autowired是如何通过构造器方法注入。
文件夹：http://blog.csdn.net/raylee2007/article/details/50611627