前置增强和其他几种增强和增强顾问等

//以一个增强的配置文件为例  <?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"       xmlns:p="http://www.springframework.org/schema/p"       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">    <!--目标对象-->    <bean id="someService" class="cn.happy.AfterAdvicce.SomeSevice"></bean>    <!--通知-->    <bean id="afterAdvice" class="cn.happy.AfterAdvicce.MyBeforeAdvice"></bean>    <!--aop-->    <bean id="someProxy" class="org.springframework.aop.framework.ProxyFactoryBean">        <property name="target" ref="someService"></property>        <property name="interceptorNames" value="afterAdvice"></property>    </bean></beans>
1.前置增强
//创建一个接口类public interface ISome {    public void One();    public void Serend();    public void Thire();}//前置增强实现的方法MethodBeforeAdvicepublic class MyBeforeAdvice implements MethodBeforeAdvice{    public void before(Method method, Object[] objects, Object o) throws Throwable {        System.out.println("==================before==================");    }}//创建接口实现类public class SomeSevice implements ISome{    public void One() {        System.out.println("One==================");    }    public void Serend() {        System.out.println("Send==============");    }    public void Thire() {        System.out.println("Third============");    }} @org.junit.Test    //aop前置增强    public void beforeAdvice(){        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextMyBeforeAdvice.xml");        ISome servic= (ISome)ctx.getBean("someProxy");        servic.One();        servic.Serend();        servic.Thire();    }
2.后置增强
//创建一个接口类public interface ISome {    public void One();    public String Serend();    public void Thire();}//创建接口实现类public class SomeSevice implements ISome {    public void One() {        System.out.println("One==================");    }    public String Serend() {        System.out.println("Send==============");        return "返回abc";    }    public void Thire() {        System.out.println("Third============");    }}//后置增强的一个方法AfterReturningAdvicepublic class MyBeforeAdvice implements AfterReturningAdvice{    public void afterReturning(Object returnValue, Method method, Object[] objects, Object target) throws Throwable {        System.out.println("============After===========returnValue="               );       if(returnValue!=null){           System.out.println(returnValue.toString().toUpperCase());         }    }} @org.junit.Test    //aop后置增强    public void afterAdvice(){        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextMyAfterAdvice.xml");        cn.happy.AfterAdvicce.ISome servic= (cn.happy.AfterAdvicce.ISome)ctx.getBean("someProxy");        servic.One();        String serend = servic.Serend();        System.out.println(serend);        servic.Thire();    }//输出台结果One==============================After===========returnValue=Send==========================After===========returnValue=返回ABC返回abcThird========================After===========returnValue=
3.aop异常增强
//创建一个接口类public interface ISomeService {     public void doSome() throws UserException;     public String doSecond();     public void doThird();}//异常增强的一个方法ThrowsAdvicepublic class MyThrowsAdvice implements ThrowsAdvice {    public void afterThrowing(UserException ex){        System.out.println("我是增强中的错误提示"+ex.getMessage());    }}//目标对象public class SomeService implements ISomeService {    public void doSome() throws UserException {        System.out.println("希望大家将来越来越好");        throw new UserException("错误了，呵呵！！！！！");    }    public String doSecond() {        System.out.println("希望大家将来越来越好2");        return "我是返回值abc";    }    public void doThird() {        System.out.println("希望大家将来越来越好3");    }}  @org.junit.Test    //aop异常增强    public void throwingAdvice()  {        //异常：01.运行时异常   02.检查异常        //01.运行时异常 虚拟机直接down掉        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextThrowing.xml");        ISomeService servic= (ISomeService)ctx.getBean("someProxy");        try {            servic.doSome();        } catch (UserException e) {            e.printStackTrace();        }    }//输出台结果cn.happy.Throwing.UserException: 错误了，呵呵！！！！！希望大家将来薪资我是增强中的错误提示错误了，呵呵！！！！！
4.aop环绕增强
//环绕增强的一个方法MethodInterceptorpublic class MyBeforeAdvice implements MethodInterceptor{    public Object invoke(MethodInvocation methodInvocation) throws Throwable {        System.out.println("============之前===========");        Object proceed = methodInvocation.proceed();        String result=null;        if(proceed!=null){            result=(String)proceed;            result=result.toUpperCase();        }        System.out.println("=============之后============");        return result;    }} @org.junit.Test    //aop环绕增强    public void methodAdvice(){        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextMethodAdvice.xml");        cn.happy.MenthodAdvice.ISome servic= (cn.happy.MenthodAdvice.ISome)ctx.getBean("someProxy");        servic.One();        String serend = servic.Serend();        System.out.println(serend);        servic.Thire();    }//输出结果============之前===========One===============================之后========================之前===========Send===========================之后============返回ABC============之前===========Third=========================之后============
5.增强顾问
//增强顾问的一个方法MethodBeforeAdvicepublic class MyBeforeAdvice implements MethodBeforeAdvice{    public void before(Method method, Object[] objects, Object o) throws Throwable {        System.out.println("==================before==================");    }} @org.junit.Test    //增强顾问b    public void beforeAdvisor()  {        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextMyBeforeAdvisor.xml");        cn.happy.BeforeAdvisor.ISome servic= (cn.happy.BeforeAdvisor.ISome)ctx.getBean("someProxy");        servic.One();        servic.Serend();        servic.Thire();    }//输出结果==================before==================One====================================before==================Send================================before==================Third============
6.正则
//定义一个接口public interface ISome {    public void One();    public void Serend();    public void Thire();}//接口的实现类public class SomeSevice implements ISome {    public void One() {        System.out.println("One==================");    }    public void Serend() {        System.out.println("Send==============");    }    public void Thire() {        System.out.println("Third============");    }}//MethodBeforeAdvicepublic class MyBeforeAdvice implements MethodBeforeAdvice{    public void before(Method method, Object[] objects, Object o) throws Throwable {        System.out.println("==================before==================");    }}@org.junit.Test    //正则    public void registerAdvisor()  {        ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextRegisterAdvisor.xml");        cn.happy.RegisterAdvisor.ISome servic= (cn.happy.RegisterAdvisor.ISome)ctx.getBean("someProxy");        servic.One();        servic.Serend();        servic.Thire();    }