Spring之@AutoWired注解
开发中依赖注入一般用@AutoWired
首先需要bean.xml文件中需要配置
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
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
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd"
xmlns:p="http://www.springframework.org/schema/p">
...
<!-- 使用annotation 自动注册bean, 并保证@Required、@Autowired的属性被注入 -->
<context:component-scan base-package="cn...." use-default-filters="false" >
<context:include-filter type="annotation" expression="org.springframework.stereotype.Service"/>
<context:include-filter type="annotation" expression="org.springframework.stereotype.Component"/>
<context:include-filter type="annotation" expression="org.springframework.stereotype.Repository"/>
</context:component-scan>
</beans>
其中红框中的是@AutoWired所必须的
最后测试看看
ApplicationContext ctx = new ClassPathXmlApplicationContext(bean.xml); obj=ctx.getBean(className);