春季AOP:只能建议使用Context Bean? [英] Spring AOP: Only Context Beans Could be Adviced?

问题描述

我是Spring AOP的新手，我尝试使用一个方面进行日志记录.这是我的配置:

I'm new to Spring AOP and I try to use an aspect for logging. Here is my configuration:

方面:

@Aspect
public class LoggerAspect {

 @Pointcut("execution(* aop.LoggerAspTest.*(..))")
 private void infoMethods(){}

 @Before("infoMethods()")
 public void logBefore(JoinPoint joinPoint) {
   Logger logger = Logger.getLogger(joinPoint.getTarget().getClass());

    logger.info("joinPoint's kind: " + joinPoint.getKind());
    logger.info("joinPoint's args: " + joinPoint.getArgs());
    logger.info("joinPoint's source location: " + joinPoint.getSourceLocation());
    logger.info("joinPoint's staticPart: " + joinPoint.getStaticPart());
    logger.info("joinPoint's targetClass: " + joinPoint.getTarget().getClass());
    logger.info("joinPoint's this: " + joinPoint.getThis());
 }
}

测试类:

@Component
public class LoggerAspTest {
  // test method
  public void getInfo() {
    System.out.println("in the logger aspect test method!!!");
  }
}

班级-执行者:

public class Main {
  // main
  public static void main(String[] args) {
    ApplicationContext ctx = new FileSystemXmlApplicationContext("applicationContext.xml");
    LoggerAspTest aspect = (LoggerAspTest) ctx.getBean("aspectTest");
    aspect.getInfo();
 }

}

最后-applicationContext.xml:

And finally - applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:aop="http://www.springframework.org/schema/aop"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd   http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">

<aop:aspectj-autoproxy/>
<bean id="aspectTest" class="aop.LoggerAspTest"/>
...

嗯，一切正常. 但是，当我更改类执行器(主要)时，不是通过Spring的ApplicationContext.getBean()创建LoggerAspTest，而是通过LoggerAspTest aspect = new LoggerAspTest();，该方面什么都不做.

Well, everything works perfectly. But when I change the class-executor (Main) so that I create the LoggerAspTest not by Spring's ApplicationContext.getBean(), but via LoggerAspTest aspect = new LoggerAspTest(); the aspect does nothing.

问题是:方面仅适用于由Spring上下文实例化的bean是真的吗?".我真的希望像全局拦截器"这样的方面能够工作，它们知道它们必须在哪些方法上进行...

The question is: "Is it true that aspects work only with beans that were instantiated by Spring's context?". I really expected aspects to work like "global interceptors", that know which methods they must proceed on...

先谢谢您.

推荐答案

是的，它必须是Spring bean

Yes it needs to be spring bean

这篇关于春季AOP:只能建议使用Context Bean?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！