Spring AOP代理

Question

我的代碼：-

<context:annotation-config/>
    <bean id="arthmeticCalculator" class="com.manoj.aop.test.CalculatorImpl" lazy-init="true"/>
    <bean id="stubCalculator" class="com.manoj.aop.test.StubCalculator" lazy-init="true"/>
    <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
      <property name="beanNames">
        <list>
          <value>*Calculator</value>
        </list>
      </property>
      <property name="interceptorNames">
        <list>
          <value>methodNameAdvisor</value>
        </list>
      </property>
    </bean>
    <bean id="methodNameAdvisor"
      class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor">
     <property name="mappedNames">
      <list>
       <value>add</value>
       <value>sub</value>
      </list>
     </property>
     <property name="advice" ref="loggingAroundAdvice" />
    </bean>
    <bean id="loggingAroundAdvice" class="com.manoj.aop.test.LoggingAroundAdvice">
      <constructor-arg><ref bean="arthmeticCalculator"/></constructor-arg>
      <constructor-arg><ref bean="stubCalculator"/></constructor-arg>
      <constructor-arg><value>false</value></constructor-arg>
    </bean>
    <bean id="testService" class="com.manoj.aop.test.TestService">
    <!--  
      <property name="arthmeticCalculator" ref="arthmeticCalculator"/>
     -->
    </bean>

Java代碼：

package com.manoj.aop.test;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;

public class LoggingAroundAdvice implements MethodInterceptor{


       Calculator actualCalculator;
       Calculator stubCalculator;
       boolean useStub;



 public LoggingAroundAdvice(Calculator actualCalculator, Calculator stubCalculator, boolean useStub) {
   this.actualCalculator = actualCalculator;
   this.stubCalculator = stubCalculator;
   this.useStub = useStub;
  }



 public Object invoke(MethodInvocation methodInvocation) throws Throwable {
  System.out.println("Around Invoice called");
  Calculator calc = useStub ? stubCalculator: actualCalculator;
  System.out.println(calc.getClass().getName());
  Object result = methodInvocation.getMethod().invoke(calc, methodInvocation.getArguments());
  return result;
 }

}

import org.springframework.beans.factory.annotation.Autowired;

public class TestService {

 @Autowired
     private Calculator  arthmeticCalculator;


     public void test(){
      System.out.println(arthmeticCalculator.getClass().getName());
      System.out.println(arthmeticCalculator.add(5, 10.5));
     }



}

抱歉，我不知道如何在此編輯器中設置文本格式，我的問題是：-

Spring正在為該類創建代理，但從未執行Around建議的Invoke方法。 有人可以告訴我發生了什么事以及如何使它調用invoke方法嗎？

這是測試類的輸出：

$代理4 15.5

謝謝，馬諾

Answer 1

您正在使用哪個版本的Spring？ 您執行代理的方式是較舊的方式。 更好的方法是使用注釋或純POJO + XML的方法。 您可以在此處查看有關AOP的簡短介紹