1.首先寫了一個環繞通知
package com.nstc.aims.interceptor;
import java.io.PrintStream;
import java.lang.reflect.Method;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
public class EntityHistoryInterceptor
implements MethodInterceptor
{
public Object invoke(MethodInvocation methodInvocation)
throws Throwable
{
Method method = methodInvocation.getMethod();
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println(methodInvocation.toString());
System.out.println(Integer.toHexString(methodInvocation.hashCode()));
System.out.println(method.getDeclaringClass());
System.out.println(method.toString());
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
String methodName = method.toGenericString();
String xmlName = methodName.substring(methodName.lastIndexOf(" ") + 1);
System.out.println(xmlName);
Object object = methodInvocation.proceed();
return object;
}
}
配置文件,由於公司使用的是Spring1.2.9,配置文件沒有aop標籤。:
<bean
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames">
<list>
<value>AIMS.accountBasicSetService</value>
<value>AIMS.accountService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.accountBalanceService</value>
<value>AIMS.accountRecordService</value>
<value>AIMS.bizFlowService</value>
<value>AIMS.bp3CallBackService</value>
<value>AIMS.bp3ConnectService</value>
<value>AIMS.commonService</value>
<value>AIMS.umFormService</value>
<value>AIMS.accountSynchroService</value>
<value>AIMS.cfbRemoteService</value>
<value>AIMS.attachService</value>
<value>AIMS.recordMouldService</value>
</list>
</property>
<property name="interceptorNames">
<list>
<value>AIMS.transactionInterceptor</value> //這個是公司原有的配置
<value>AIMS.entityHistoryAdvisor</value> //這個是我加的切面
</list>
</property>
</bean>
執行結果如圖:
原因是:
Proxy$285代理了Bean,Proxy$286代理了Proxy$285,我寫的切面代理了Proxy$286,
所以導致執行了三次。
考慮是配置文件使用的spring的bean有問題,於是換了一種實現方式:
<bean id="AIMS.entityHistoryAdvice" class="com.nstc.aims.interceptor.EntityHistoryInterceptor" />
<bean id="AIMS.entityHistoryPointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut">
<property name="pattern" value=".*RecordMouldService\..*"></property>
</bean>
<bean id="AIMS.entityHistoryAdvisor" class="org.springframework.aop.support.DefaultPointcutAdvisor">
<property name="pointcut" ref="AIMS.entityHistoryPointcut" />
<property name="advice" ref="AIMS.entityHistoryAdvice"></property>
</bean>
結果和一開始一樣,也是被代理了三次,改變位置也沒辦法。
考慮不使用環繞通知,使用後置通知,並且把切面放到最上面試一下。如果不行的話,就要考慮在方法中判斷target了。
Interceptor:
public class EntityHistoryAfterAdvice implements AfterReturningAdvice {
public void afterReturning(Object returnValue, Method method, Object[] args, Object target) throws Throwable {
System.out.println("@@@@@@@@@@@@@@@@@@@@@@@@@@@@");
System.out.println(target);
}
}
配置文件
<bean
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames">
<list>
<value>AIMS.accountBasicSetService</value>
<value>AIMS.accountService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.accountBalanceService</value>
<value>AIMS.accountRecordService</value>
<value>AIMS.bizFlowService</value>
<value>AIMS.bp3CallBackService</value>
<value>AIMS.bp3ConnectService</value>
<value>AIMS.commonService</value>
<value>AIMS.umFormService</value>
<value>AIMS.accountSynchroService</value>
<value>AIMS.cfbRemoteService</value>
<value>AIMS.attachService</value>
<value>AIMS.recordMouldService</value>
</list>
</property>
<property name="interceptorNames">
<list>
<value>AIMS.entityHistoryAdvisor</value>
<value>AIMS.transactionInterceptor</value>
</list>
</property>
</bean>
<bean id="AIMS.entityHistoryAfterAdvice" class="com.nstc.aims.interceptor.EntityHistoryAfterAdvice" />
<bean id="AIMS.entityHistoryAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice">
<ref bean="AIMS.entityHistoryAfterAdvice" />
</property>
<!--指定要代理的方法 -->
<property name="patterns">
<value>.*RecordMouldService.*</value>
</property>
</bean>
結果:
執行了6次,分析應該是這樣的。應該執行5次,最後多的那一次是最後的代理類的順序導致。
應當把後置通知放到最後,執行了5次。
後面考慮是實現的接口不對:
換成了Cglib的接口MethodInterception,結果直接報錯。
代理那個類的方法在本模塊沒有找到,有可能是公司框架的封裝。無權修改。
實在沒辦法了,只有去invoke方法中判斷target了。
最終代碼如下:
package com.nstc.aims.interceptor;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.aop.framework.ReflectiveMethodInvocation;
import com.nstc.aims.service.impl.RecordMouldServiceImpl;
/**
* <p>Title: EntityHistoryAroundAdvice.java</p>
*
* <p>Description: 環繞通知</p>
*
* <p>Company: 北京九恆星科技股份有限公司</p>
*
* @author luhao
*
* @since:2019年6月5日 上午11:59:46
*
*/
public class EntityHistoryAroundAdvice implements MethodInterceptor{
public Object invoke(MethodInvocation methodInvocation) throws Throwable {
ReflectiveMethodInvocation reflectiveMethodInvocation = (ReflectiveMethodInvocation) methodInvocation;
boolean isRealClass = reflectiveMethodInvocation.getThis().getClass() == RecordMouldServiceImpl.class;
if(!isRealClass) {
return methodInvocation.proceed();
}
Object[] args = reflectiveMethodInvocation.getArguments();//方法參數
Object object = methodInvocation.proceed();//方法結果
return object;
}
}
<bean
class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
<property name="beanNames">
<list>
<value>AIMS.accountBasicSetService</value>
<value>AIMS.accountService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.associateBankService</value>
<value>AIMS.accountBalanceService</value>
<value>AIMS.accountRecordService</value>
<value>AIMS.bizFlowService</value>
<value>AIMS.bp3CallBackService</value>
<value>AIMS.bp3ConnectService</value>
<value>AIMS.commonService</value>
<value>AIMS.umFormService</value>
<value>AIMS.accountSynchroService</value>
<value>AIMS.cfbRemoteService</value>
<value>AIMS.attachService</value>
<value>AIMS.recordMouldService</value>
</list>
</property>
<property name="interceptorNames">
<list>
<value>AIMS.transactionInterceptor</value>
<value>AIMS.entityHistoryAdvisor</value>
</list>
</property>
</bean>
<bean id="AIMS.entityHistoryAdvice" class="com.nstc.aims.interceptor.EntityHistoryAroundAdvice" />
<bean id="AIMS.entityHistoryAdvisor" class="org.springframework.aop.support.RegexpMethodPointcutAdvisor">
<property name="advice">
<ref bean="AIMS.entityHistoryAdvice" />
</property>
<!--指定要代理的方法 -->
<property name="patterns">
<value>.*RecordMouldService.*</value>
</property>
</bean>