spring切面：schema：前后异常增强

1.aop/SchemaLogger类（普通类）

package aop;import java.util.Arrays;import org.apache.log4j.Logger;import org.aspectj.lang.JoinPoint;public class SchemaLogger {    private static final Logger log = Logger.getLogger(UserLogger.class);    //前置增强-普通类    public void before(JoinPoint jp){        System.out.println("注解前置增强");        System.out.println("调用的方法："+jp.getSignature()+"，传递参数："+Arrays.toString(jp.getArgs()));}    //后置增强-普通类    public void afterReturning(JoinPoint jp,Object returnResult){        System.out.println("注解后置增强");        System.out.println("调用的方法："+jp.getSignature()+"，传递参数："+Arrays.toString(jp.getArgs())+"，返回参数："+returnResult);    }    //抛出异常增强-普通类    public void afterThrowing(JoinPoint jp,RuntimeException e){        log.error("调用的方法："+jp.getSignature()+"，传递参数："+Arrays.toString(jp.getArgs())+"，方法发生异常："+e);    }    }

2.applicationContext.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:p="http://www.springframework.org/schema/p"    xmlns:aop="http://www.springframework.org/schema/aop"    xsi:schemaLocation="http://www.springframework.org/schema/beans     http://www.springframework.org/schema/beans/spring-beans-3.1.xsd    http://www.springframework.org/schema/aop    http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">    <!-- 将前置增强类配成bean,交给spring管理 <bean id="loggerBefore" class="aop.LoggerBefore"></bean>         将后置增强类配成bean,交给spring管理 <bean id="afterReturning" class="aop.AfterReturning"></bean>         配置切面(将增强类关联给某个条件范围内的方法) <bean id="errorLogger" class="aop.ErrorLogger"></bean> -->    <!-- <bean id="aroundLogger" class="aop.AroundLogger"></bean> -->    <!-- <bean class="aop.UserLogger"></bean> -->    <!-- <bean class="aop.AroundLogger2"></bean> -->    <!-- <bean class="aop.AfterAnno"></bean> <aop:aspectj-autoproxy></aop:aspectj-autoproxy> -->    <bean id="schemaLogger" class="aop.SchemaLogger"></bean>    <aop:config>    <aop:pointcut expression="execution(* biz.impl.*.*(..))" id="myPoint"/>    <aop:aspect ref="schemaLogger">    <aop:before method="before" pointcut-ref="myPoint"/>    <aop:after-returning method="afterReturning" pointcut-ref="myPoint" returning="returnResult"></aop:after-returning>    <aop:after-throwing method="afterThrowing" pointcut-ref="myPoint" throwing="e"/>    </aop:aspect>    </aop:config>    <!-- <aop:config> 配置切入点pointcut <aop:pointcut expression="execution(* biz.impl.*.*(..))"         id="myPoint"/> <aop:advisor advice-ref="loggerBefore" pointcut-ref="myPoint"/>         <aop:advisor advice-ref="afterReturning" pointcut-ref="myPoint"/> <aop:advisor         advice-ref="errorLogger" pointcut-ref="myPoint"/> <aop:advisor advice-ref="aroundLogger"         pointcut-ref="myPoint"/> </aop:config> -->    <bean id="userBiz" class="biz.impl.UserBizImpl" p:userDao-ref="userDao">        <!-- <property name="userDao" ref="userDao2"></property> -->    </bean>    <bean id="userDao" class="dao.impl.UserDaoImpl" />    <bean id="userDao2" class="dao.impl.UserDaoImpl2" />    </bean></beans>

3.dao.impl/UserDaoImpl类

package dao.impl;import javax.management.RuntimeErrorException;import dao.UserDao;import entity.User;public class UserDaoImpl implements UserDao {    @Override    public User findUser() {        System.out.println("===========Dao层查询User 1==============");        User u=new User("Tom",22);        //throw new RuntimeException("出现异常");        return u;    }}

4. test;

import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import entity.User;import biz.UserBiz;import biz.impl.UserBizImpl;import ioc.HelloWorld;public class TestMain {    /**     * @param args     */    public static void main(String[] args) {        //加载spring容器,解析配置文件        ApplicationContext ac=new ClassPathXmlApplicationContext("applicationContext.xml");         UserBiz userBiz=(UserBiz) ac.getBean("userBiz");         User u= userBiz.getUser(101);         System.out.println(u.getUname()+","+u.getAge());    }}