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Spring Aware标记接口使用案例解析

2023-07-26 17:47:04 307

Aware接口是一个标记接口

XXXAare在Spring中表示对XXX可以感知，通俗点解释就是：如果在某个类里面想要使用Spring的一些东西，就可以通过实现XXXAware接口告诉Spring,Spring看到后就会送过来，而接受的方式是通过实现接口唯一的方法setXXX.比如ApplicationContextAware

ApplicationContextAware使用

编写SpringAware实现ApplicationContext接口

packagecom.rookie.bigdata.aware;

importorg.springframework.beans.BeansException;
importorg.springframework.context.ApplicationContext;
importorg.springframework.context.ApplicationContextAware;

/**

*@authorrookie
*@version1.0
*@date2020/3/2122:58
*/

publicclassSpringAwareimplementsApplicationContextAware{

privateApplicationContextapplicationContext;

//Spring容器会将ApplicationContext对象传入过来
@Override
publicvoidsetApplicationContext(ApplicationContextapplicationContext)throwsBeansException{
System.out.println("传入的IOC容器applicationContext=["+applicationContext+"]");
this.applicationContext=applicationContext;
}

publicApplicationContextgetApplicationContext(){
returnapplicationContext;
}


}

User实体类

packagecom.rookie.bigdata.domain;

publicclassUser{
privateStringusername;
privateStringaddress;

publicStringgetUsername(){
returnusername;
}

publicvoidsetUsername(Stringusername){
this.username=username;
}

publicStringgetAddress(){
returnaddress;
}

publicvoidsetAddress(Stringaddress){
this.address=address;
}

}

spring-aware.xml

测试类

	@Test
publicvoidtest1(){
ApplicationContextapplicationContext=newClassPathXmlApplicationContext("/aware/spring-aware.xml");

//Useruser=(User)applicationContext.getBean("user");
//System.out.println(user);

SpringAwarespringAware=(SpringAware)applicationContext.getBean("springAware");
ApplicationContextapplicationContext1=springAware.getApplicationContext();
Useruser=(User)applicationContext1.getBean("user");
System.out.println(user);
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

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Spring Aware标记接口使用案例解析

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