如何配置Spring注解
<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <context:annotation-config/> </beans>
描述
上述配置,会隐式的配置一下PostProcessor,具体:AutowiredAnnotationBeanPostProcessor
, CommonAnnotationBeanPostProcessor
,PersistenceAnnotationBeanPostProcessor
, 以及 RequiredAnnotationBeanPostProcessor。
并,如何你在DispatcherServlet对应的WebApplicationContext配置<context:annotation-config/>,其只会@Autowired,而不会检查Service下的注解。
AutowiredAnnotationBeanPostProcessor
声明@Autowired注解
CommonAnnotationBeanPostProcessor
声明@Resource、@PostConstruct、@PreDestroy等注解
PersistenceAnnotationBeanPostProcessor
声明@PersistenceContext注解
RequiredAnnotationBeanPostProcessor
声明@Required注解
关注
在我们使用注解时一般都会配置扫描包路径选项:
<context:component-scan base-package="pack.pack"/>
该配置项其实也包含了自动注入上述processor的功能,因此当使用<context:component-scan/>后,即可将<context:annotation-config/>省去。
摘录:http://www.cnblogs.com/iuranus/archive/2012/07/19/2599084.html
时间: 2024-10-15 02:12:56