Spring AOP的几种实现方式总结

<?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:tx="http://www.springframework.org/schema/tx" 
  xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-4.2.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-4.2.xsd"> 
     
    <bean id="concreteImplementor" class="com.marving.aop.ConcreteImplementor" /> 
  
    <bean id="interceptorHandler" class="com.marving.aop.InterceptorHandler" /> 
     
    <aop:config> 
      <aop:aspect id="interceptor" ref="interceptorHandler"> 
        <aop:pointcut id="addAllMethod" expression="execution(* com.marving.aop.Abstration.*(..))" /> 
        <aop:before method="doSomething" pointcut-ref="addAllMethod" /> 
        <aop:after method="doSomething" pointcut-ref="addAllMethod" /> 
      </aop:aspect> 
    </aop:config> 
</beans> 

public interface <span style="font-size:12px;">Abstration</span> { 
  public void operation() 
} 

//具体实现化角色 
public class ConcreteImplementor implements Implementor{ 
 
  @Override 
  public void operation() {   
    System.out.println("ConcreteImplementor"); 
  } 
 
} 

public class InterceptorHandler{  
  public void printTime(){ 
    System.out.println("CurrentTime = " + System.currentTimeMillis()); 
  } 
} 

<bean id="MyInterceptor" class="com.yesjpt.interceptor. MyInterceptor"></bean>  
<bean  
  class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">  
  <property name="beanNames">  
    <list>  
      <value>*Service</value>  
    </list>  
  </property>  
  <property name="interceptorNames">  
    <list>  
      <value>MyInterceptor</value>  
    </list>  
  </property>  
 </bean> 

import java.lang.reflect.Method; 
import org.aopalliance.intercept.MethodInterceptor; 
import org.aopalliance.intercept.MethodInvocation; 
/** 
 * @author 
 * 
 */  
public class MyInterceptor implements MethodInterceptor{  
  
  @Override  
  public Object invoke(MethodInvocation invocation) throws Throwable {  
      
    Method method = invocation.getMethod();//获取被拦截的方法  
    Object[] arguments = invocation.getArguments();//获取拦截方法的参数  
    /* 
     * 特殊，某些权限需要做特殊处理 
     * 比如用户信息权限，在方法执行完毕返回的时候，要将电话号码与邮箱抹除 
     */  
    //环绕通知前置特殊处理  
    this.beforeReslove();  
    Object proceed = invocation.proceed();//调用目标方法  
    //环绕通知后置特殊处理  
    proceed = this.afterReslove();  
    return proceed;  
  } 
   private Object afterReslove() { 
      System.out.println("CurrentTime = " + System.currentTimeMillis()); 
     return null; 
   } 
   private void beforeReslove() { 
      System.out.println("CurrentTime = " + System.currentTimeMillis()); 
   }   
} 

<aop:aspectj-autoproxy/> 

package com.marving.aop; 
import java.util.Arrays; 
import org.aspectj.lang.ProceedingJoinPoint; 
import org.aspectj.lang.annotation.Around; 
import org.aspectj.lang.annotation.Aspect; 
import org.aspectj.lang.annotation.Pointcut; 
import org.springframework.stereotype.Component;  
@Aspect 
@Component  
public class AspectHandler { 
   
  @Pointcut("execution(* com.marving.service.BaseServ+.*(..))") 
  private void doMethod() { 
  } 
 
    /** 
   * This is the method which I would like to execute before a selected method 
   * execution. 
   */ 
  @Before("doMethod()") 
  public void beforeAdvice() { 
    System.out.println("before method invoked."); 
  } 
 
  /** 
   * This is the method which I would like to execute after a selected method 
   * execution. 
   */ 
  @After("doMethod()") 
  public void afterAdvice() { 
    System.out.println("after method invoked."); 
  } 
 
  // 配置controller环绕通知,使用在方法aspect()上注册的切入点 
  @Around("doMethod()") 
  public Object around(ProceedingJoinPoint pjp) throws Throwable{ 
    Object result = null; 
    String methodName = pjp.getSignature().getName(); 
    try { 
      System.out.println("The method [" + methodName + "] begins with " + Arrays.asList(pjp.getArgs())); 
      result = pjp.proceed(); 
    } catch (Throwable e) { 
      System.out.println("The method [" + methodName + "] occurs expection : " + e); 
      throw new RuntimeException(e); 
    } 
    System.out.println("The method [" + methodName + "] ends"); 
    return result; 
  } 
}