spring AspectJAroundAdvice 源码
spring AspectJAroundAdvice 代码
文件路径：/spring-aop/src/main/java/org/springframework/aop/aspectj/AspectJAroundAdvice.java
/*
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.aop.aspectj;
import java.io.Serializable;
import java.lang.reflect.Method;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.weaver.tools.JoinPointMatch;
import org.springframework.aop.ProxyMethodInvocation;
import org.springframework.lang.Nullable;
/**
* Spring AOP around advice (MethodInterceptor) that wraps
* an AspectJ advice method. Exposes ProceedingJoinPoint.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 2.0
*/
@SuppressWarnings("serial")
public class AspectJAroundAdvice extends AbstractAspectJAdvice implements MethodInterceptor, Serializable {
public AspectJAroundAdvice(
Method aspectJAroundAdviceMethod, AspectJExpressionPointcut pointcut, AspectInstanceFactory aif) {
super(aspectJAroundAdviceMethod, pointcut, aif);
}
@Override
public boolean isBeforeAdvice() {
return false;
}
@Override
public boolean isAfterAdvice() {
return false;
}
@Override
protected boolean supportsProceedingJoinPoint() {
return true;
}
@Override
@Nullable
public Object invoke(MethodInvocation mi) throws Throwable {
if (!(mi instanceof ProxyMethodInvocation pmi)) {
throw new IllegalStateException("MethodInvocation is not a Spring ProxyMethodInvocation: " + mi);
}
ProceedingJoinPoint pjp = lazyGetProceedingJoinPoint(pmi);
JoinPointMatch jpm = getJoinPointMatch(pmi);
return invokeAdviceMethod(pjp, jpm, null, null);
}
/**
* Return the ProceedingJoinPoint for the current invocation,
* instantiating it lazily if it hasn't been bound to the thread already.
* @param rmi the current Spring AOP ReflectiveMethodInvocation,
* which we'll use for attribute binding
* @return the ProceedingJoinPoint to make available to advice methods
*/
protected ProceedingJoinPoint lazyGetProceedingJoinPoint(ProxyMethodInvocation rmi) {
return new MethodInvocationProceedingJoinPoint(rmi);
}
}
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