基于XML开发AOP应用报错的问题

基于XML开发AOP应用

服务层接口PersonService:

package com.go123.service;public interface PersonService {public abstract String getPersonName(Integer personid);public abstract void save(String name);public abstract void update(String name, Integer personid);} 

实现PersonServiceImpl:

package com.go123.service.impl;import com.go123.service.PersonService;public class PersonServiceImpl implements PersonService{public String getPersonName(Integer personid) {System.out.println("调用getPersonName()方法");return "xxx";}public void save(String name) {System.out.println("调用save()方法"+name);}public void update(String name, Integer personid) {System.out.println("调用update()方法");}} 

拦截类MyInterceptor 

package com.go123.aop;import org.aspectj.lang.ProceedingJoinPoint;public class MyInterceptor {//匹配函数参数名称为name，获取输入参数public void doAccessCheck(String name) {System.out.println("前置通知:"+name);}//result是被拦截方法的返回值，再当做参数传递给doAfterReturning函数，获取返回结果public void doAfterReturning(String result) {System.out.println("后置通知:"+ result);}public void doAfter() {System.out.println("最终通知");}public void doAfterThrowing(Exception e) {System.out.println("例外通知:"+ e);}public Object doBasicProfiling(ProceedingJoinPoint pjp) throws Throwable {//if(){//判断用户是否在权限System.out.println("进入方法");Object result = pjp.proceed();System.out.println("退出方法");//}return result;}} 

beans.xml配置文件:

<?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"xmlns:aop="http://www.springframework.org/schema/aop"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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <bean id="myInterceptor" class="com.go123.aop.MyInterceptor"></bean><bean id="personService" class="com.go123.service.impl.PersonServiceImpl"></bean><aop:config> <aop:aspect id="myaop" ref="myInterceptor"><aop:pointcut expression="execution(* com.go123.service.impl.PersonServiceImpl.*(..)) id="mycut"/><aop:before method="doAccessCheck" pointcut-ref="mycut"/></aop:aspect></aop:config></beans> 

测试类SpringAOPTest:

package junt.test;import org.junit.BeforeClass;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.go123.service.PersonService;public class SpringAOPTest {@BeforeClasspublic static void setUpBeforeClass() throws Exception {}/** * 基于xml配置文件实现AOP */@Test public void interceptorTest(){ApplicationContext cxt = new ClassPathXmlApplicationContext("beans.xml");PersonService personService = (PersonService)cxt.getBean("personService");personService.save("yy");}} 

上述配置后会抛出org.springframework.beans.factory.BeanCreationException: 

原因是XML配置不提供参数的支持，若切面里的方法有参数，会报错。

第一种解决方式：

在拦截类MyInterceptor中去掉doAccessCheck(String name)方法中的参数

第二种解决方式：

修改beans.xml中切入点 <aop:pointcut expression="execution(* com.go123.service.impl.PersonServiceImpl.*(..)) and args(name)" id="mycut"/>