[Spring]@Autowired 的使用

http://mydreams1983.blog.163.com/blog/static/8632879520095235322618/

要使用@Autowired 得在spring的配置文件里设置：

xmlns:context="http://www.springframework.org/schema/context "

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd ">

使用<context:annotation-config></context:annotation-config>之后就可以在类里设置@Autowired来自动绑定了。

实例如下：

1.配置文件：

<?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-2.0.xsd
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd ">
 <context:annotation-config></context:annotation-config>
 <bean id="auto123"  class="org.michael.spring.demo.autowire.AutoWireBean">
  <property name="name1" value="Jordan"></property>
 </bean>
 <bean id="auto"  class="org.michael.spring.demo.autowire.AutoWireBean" autowire-candidate="false">
  <property name="name1" value="Crystal"></property>
 </bean>
 <bean id="autowire1" class="org.michael.spring.demo.autowire.AutoWireBean2" >
  <property name="helloWord" value="Michael"></property>
 </bean>
 
</beans>

2.AutoWireBean2

package org.michael.spring.demo.autowire;

import org.springframework.beans.factory.annotation.Autowired;

public class AutoWireBean2 {
 
 private String helloWord; 
 @Autowired
 private AutoWireBean auto;
 public String getHelloWord() {
  return helloWord;
 }
 public void setHelloWord(String helloWord) {
  this.helloWord = helloWord;
 }
 public AutoWireBean getAuto() {
  return auto;
 }
 
}

注意，这里的auto可以不用写set方法