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。