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  • Spring AOP + AspectJ in XML configuration example

    For those don’t like annotation or using JDK 1.4, you can use AspectJ in XML based instead.

    Review last customerBo interface again, with few methods, later you will learn how to intercept it via AspectJ in XML file.

    package com.mkyong.customer.bo;
    
    public interface CustomerBo {
    
    	void addCustomer();
    	
    	String addCustomerReturnValue();
    	
    	void addCustomerThrowException() throws Exception;
    	
    	void addCustomerAround(String name);
    }
    

    1. AspectJ <aop:before> = @Before

    AspectJ @Before example.

    package com.mkyong.aspect;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.Before;
    
    @Aspect
    public class LoggingAspect {
    
    	@Before("execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))")
    	public void logBefore(JoinPoint joinPoint) {
    		//...
    	}
    
    }
    

    Equivalent functionality in XML, with <aop:before>.

    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
      <aop:aspect id="aspectLoggging" ref="logAspect" >
    
         <!-- @Before -->
         <aop:pointcut id="pointCutBefore"
    	expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))" />
    
         <aop:before method="logBefore" pointcut-ref="pointCutBefore" />
    			
      </aop:aspect>
    
    </aop:config>
    

    2. AspectJ <aop:after> = @After

    AspectJ @After example.

    package com.mkyong.aspect;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.After;
    
    @Aspect
    public class LoggingAspect {
    
    	@After("execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))")
    	public void logAfter(JoinPoint joinPoint) {
    		//...
    	}
    
    }
    

    Equivalent functionality in XML, with <aop:after>.

    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
      <aop:aspect id="aspectLoggging" ref="logAspect" >
    
         <!-- @After -->
         <aop:pointcut id="pointCutAfter"
    	expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))" />
    
         <aop:after method="logAfter" pointcut-ref="pointCutAfter" />
    			
      </aop:aspect>
    
    </aop:config>
    

    3. AspectJ <aop:after-returning> = @AfterReturning

    AspectJ @AfterReturning example.

    package com.mkyong.aspect;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.AfterReturning;
    
    @Aspect
    public class LoggingAspect {
    
      @AfterReturning(
       pointcut = "execution(* com.mkyong.customer.bo.CustomerBo.addCustomerReturnValue(..))",
       returning= "result")
       public void logAfterReturning(JoinPoint joinPoint, Object result) {
    	//...
       }
    
    }
    

    Equivalent functionality in XML, with <aop:after-returning>.

    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
      <aop:aspect id="aspectLoggging" ref="logAspect" >
    
        <!-- @AfterReturning -->
        <aop:pointcut id="pointCutAfterReturning"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerReturnValue(..))" />
    
        <aop:after-returning method="logAfterReturning" returning="result" 
          pointcut-ref="pointCutAfterReturning" />
    			
      </aop:aspect>
    
    </aop:config>
    

    4. AspectJ <aop:after-throwing> = @AfterReturning

    AspectJ @AfterReturning example.

    package com.mkyong.aspect;
    
    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.AfterThrowing;
    
    @Aspect
    public class LoggingAspect {
    
      @AfterThrowing(
       pointcut = "execution(* com.mkyong.customer.bo.CustomerBo.addCustomerThrowException(..))",
       throwing= "error")
      public void logAfterThrowing(JoinPoint joinPoint, Throwable error) {
    	//...
      }
    }
    

    Equivalent functionality in XML, with <aop:after-throwing>.

    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
      <aop:aspect id="aspectLoggging" ref="logAspect" >
    
        <!-- @AfterThrowing -->
        <aop:pointcut id="pointCutAfterThrowing"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerThrowException(..))" />
    			
        <aop:after-throwing method="logAfterThrowing" throwing="error" 
          pointcut-ref="pointCutAfterThrowing"  />
    			
      </aop:aspect>
    
    </aop:config>
    

    5. AspectJ <aop:after-around> = @Around

    AspectJ @Around example.

    package com.mkyong.aspect;
    
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.Around;
    
    @Aspect
    public class LoggingAspect {
    
    	@Around("execution(* com.mkyong.customer.bo.CustomerBo.addCustomerAround(..))")
    	public void logAround(ProceedingJoinPoint joinPoint) throws Throwable {
    		//...
    	}
    	
    }
    

    Equivalent functionality in XML, with <aop:after-around>.

    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
       <aop:aspect id="aspectLoggging" ref="logAspect" >
    
        <!-- @Around -->
       <aop:pointcut id="pointCutAround"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerAround(..))" />
    			
       <aop:around method="logAround" pointcut-ref="pointCutAround"  />
    			
      </aop:aspect>
    
    </aop:config>
    

    Full XML example

    See complete AspectJ XML based configuration file.

    <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"
    	xsi:schemaLocation="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 ">
    
    <aop:aspectj-autoproxy />
    
    <bean id="customerBo" class="com.mkyong.customer.bo.impl.CustomerBoImpl" />
    
    <!-- Aspect -->
    <bean id="logAspect" class="com.mkyong.aspect.LoggingAspect" />
    
    <aop:config>
    
      <aop:aspect id="aspectLoggging" ref="logAspect">
    
        <!-- @Before -->
        <aop:pointcut id="pointCutBefore"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))" />
    
        <aop:before method="logBefore" pointcut-ref="pointCutBefore" />
    
        <!-- @After -->
        <aop:pointcut id="pointCutAfter"
           expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomer(..))" />
    
        <aop:after method="logAfter" pointcut-ref="pointCutAfter" />
    
        <!-- @AfterReturning -->
        <aop:pointcut id="pointCutAfterReturning"
           expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerReturnValue(..))" />
    
        <aop:after-returning method="logAfterReturning"
          returning="result" pointcut-ref="pointCutAfterReturning" />
    
        <!-- @AfterThrowing -->
        <aop:pointcut id="pointCutAfterThrowing"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerThrowException(..))" />
    
        <aop:after-throwing method="logAfterThrowing"
          throwing="error" pointcut-ref="pointCutAfterThrowing" />
    
        <!-- @Around -->
        <aop:pointcut id="pointCutAround"
          expression="execution(* com.mkyong.customer.bo.CustomerBo.addCustomerAround(..))" />
    
        <aop:around method="logAround" pointcut-ref="pointCutAround" />
    
      </aop:aspect>
    
    </aop:config>
    
    </beans>
    
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  • 原文地址:https://www.cnblogs.com/ghgyj/p/4752405.html
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