springAop

http://www.oschina.net/code/snippet_246557_9205

@Before是在所拦截方法执行之前执行一段逻辑。
@After 是在所拦截方法执行之后执行一段逻辑。
@Around是可以同时在所拦截方法的前后执行一段逻辑。

 

package com.itsoft.action;

import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Controller;

/**
 *
 * @author zxf
 * 演示aop测试类
 */
@Controller
public class UserAction {

    public void queryUsers(){

        System.out.println( "查询所有用户【all users list】" );
    }

    public static void main(String[] args) {

        ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext( "application-aop.xml" );

        UserAction userAction = (UserAction)ctx.getBean( "userAction" );
        userAction.queryUsers();

        ctx.destroy();
    }
}

--------------------------------------------------------------------------

@Aspect
@Component
public class LogIntercept {

    @Pointcut ( "execution(public * com.itsoft.action..*.*(..))" )
    public void recordLog(){}


    @Before ( "recordLog()" )
    public void before() {
        this .printLog( "已经记录下操作日志@Before 方法执行前" );
    }

    @Around ( "recordLog()" )
    public void around(ProceedingJoinPoint pjp) throws Throwable{
        this .printLog( "已经记录下操作日志@Around 方法执行前" );
        pjp.proceed();
        this .printLog( "已经记录下操作日志@Around 方法执行后" );
    }


    @After ( "recordLog()" )
    public void after() {
        this .printLog( "已经记录下操作日志@After 方法执行后" );
    }


    private void printLog(String str){
        System.out.println(str);
    }
}

-------------------------------

<?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:aop= "http://www.springframework.org/schema/aop"
      xmlns:context= "http://www.springframework.org/schema/context"
      xsi:schemaLocation="
       http: //www.springframework.org/schema/context
       http: //www.springframework.org/schema/context/spring-context-3.0.xsd
       http: //www.springframework.org/schema/beans
       http: //www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http: //www.springframework.org/schema/aop
       http: //www.springframework.org/schema/aop/spring-aop-3.0.xsd">
    <context:annotation-config />
    <context:component-scan base- package = "com.itsoft" />
    <aop:aspectj-autoproxy />
</beans>