尚学堂_Spring_0800_IOC_Auto_Wire

Spring的自动装配分为如下几种：
 autodetect
 byName (根据名字去找)
 byType (根据类型去找)
 constructor
 default (先根据byName去找，然后根据byType去找)
 no (默认是不自动装配)

具体配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

  <bean id="userDAO" class="com.bjsxt.dao.impl.UserDAOImpl">
   <property name="daoId" value="1"></property>
   </bean>
 
  <bean id="userDAO2" class="com.bjsxt.dao.impl.UserDAOImpl">
   <property name="daoId" value="2"></property>
  </bean>
 
  <bean id="userService" class="com.bjsxt.service.UserService" autowire="byName">
 
    <!-- Setter Injection --><!--

    <property name="userDAO" ref="u" />
 
   
   --><!-- Constructor Injection --><!--
   <constructor-arg ref="u">  </constructor-arg>
   
   
   
  --></bean>
 

</beans>

 
参考：spring-framework-2.5.6-with-dependencies\spring-framework-2.5.6\docs\reference\html_single\index.html 中的3.3.5章节。