public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath*:config" + "/spring/applicationContext-core2.xml");
MyService as = (MyService) context.getBean("annotationServiceImpl");
as.doSomething("Jack"); //aop起作用，com.zhuguang.jack.annotation.AnnotationServiceImpl@1c55f277，里面的h = org.springframework.aop.framework.JdkDynamicAopProxy@50c6911c，h里面的advised = ProxyFactory = 1 interfaces [MyService]; 4 advisors [ExposeInvocationInterceptor.ADVISOR, InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void afterrr(JoinPoint)]; InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void arounddd(ProceedingJoinPoint) ]; InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void beforeee(JoinPoint)]; ]; targetSource [AnnotationServiceImpl@1c55f277]];
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
TargetSource targetSource = this.advised.targetSource; //AnnotationServiceImpl，被代理的类，
Class<?> targetClass = null;
Object target = null;
try {
if (!this.equalsDefined && AopUtils.isEqualsMethod(method)) { //调用的方法是equals方法，就直接调用了，不用代理了。
return equals(args[0]);
}
if (!this.hashCodeDefined && AopUtils.isHashCodeMethod(method)) { //调用的方法是hashCode方法，就直接调用了，不用代理了。
return hashCode();
}
if (!this.advised.opaque && method.getDeclaringClass().isInterface() &&
method.getDeclaringClass().isAssignableFrom(Advised.class)) {//调用的方法是，，就直接调用了，不用代理了。
return AopUtils.invokeJoinpointUsingReflection(this.advised, method, args);
}
Object retVal;
target = targetSource.getTarget();
if (target != null) {
targetClass = target.getClass();//class com.zhuguang.jack.annotation.AnnotationServiceImpl
}
List<Object> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, targetClass); //advised = ProxyFactory代理工厂，
[public void arounddd(ProceedingJoinPoint) , public void beforeee(JoinPoint), public void afterrr(JoinPoint), public void pc1()]这些切面已经加到工厂里面去了， [ExposeInvocationInterceptor@65aa6596,
AspectJAfterAdvice: advice method [public void afterrr()]; aspect name 'aspectAnnotation',
AspectJAroundAdvice: advice method [public void arounddd() ]; aspect name 'aspectAnnotation',
MethodBeforeAdviceInterceptor@1ce61929]
else {
invocation = new ReflectiveMethodInvocation(proxy, target, method, args, targetClass, chain);
retVal = invocation.proceed(); //调用，invocation = ReflectiveMethodInvocation，
}
Class<?> returnType = method.getReturnType(); //返回值
return retVal;
}
}
public List<Object> getInterceptorsAndDynamicInterceptionAdvice(Method method, Class<?> targetClass) {
MethodCacheKey cacheKey = new MethodCacheKey(method); //doSomething方法，
List<Object> cached = this.methodCache.get(cacheKey);
if (cached == null) {
cached = this.advisorChainFactory.getInterceptorsAndDynamicInterceptionAdvice(this, method, targetClass);
this.methodCache.put(cacheKey, cached);
}
return cached;
}
public List<Object> getInterceptorsAndDynamicInterceptionAdvice(
Advised config, Method method, Class<?> targetClass) { //config = ProxyFactory，method = doSomething()，targetClass = AnnotationServiceImpl
List<Object> interceptorList = new ArrayList<Object>(config.getAdvisors().length);
boolean hasIntroductions = hasMatchingIntroductions(config, targetClass);
AdvisorAdapterRegistry registry = GlobalAdvisorAdapterRegistry.getInstance();
for (Advisor advisor : config.getAdvisors()) {//[ExposeInvocationInterceptor.ADVISOR,
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void afterrr()];
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void arounddd() ];
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void beforeee()]]
if (advisor instanceof PointcutAdvisor) {
PointcutAdvisor pointcutAdvisor = (PointcutAdvisor) advisor; //AspectAnnotation.afterrr，AspectAnnotation.arounddd，AspectAnnotation.beforeee，
if (config.isPreFiltered() || pointcutAdvisor.getPointcut().getClassFilter().matches(targetClass)) { //在不在Pointcut的表达式里面，匹配的是类。
MethodInterceptor[] interceptors = registry.getInterceptors(advisor); //AspectAnnotation.afterrr，
MethodMatcher mm = pointcutAdvisor.getPointcut().getMethodMatcher(); //AspectJExpressionPointcut: () pc1()，
if (MethodMatchers.matches(mm, method, targetClass, hasIntroductions)) { //前面匹配的是类，这里匹配的是方法。
else {
interceptorList.addAll(Arrays.asList(interceptors));
}
}
}
}
}
return interceptorList;
}
public MethodInterceptor[] getInterceptors(Advisor advisor) throws UnknownAdviceTypeException {
List<MethodInterceptor> interceptors = new ArrayList<MethodInterceptor>(3);
Advice advice = advisor.getAdvice();
if (advice instanceof MethodInterceptor) {
interceptors.add((MethodInterceptor) advice);
}
for (AdvisorAdapter adapter : this.adapters) {
if (adapter.supportsAdvice(advice)) {
interceptors.add(adapter.getInterceptor(advisor));
}
}
return interceptors.toArray(new MethodInterceptor[interceptors.size()]);
}
public Object proceed() throws Throwable {
if (this.currentInterceptorIndex == this.interceptorsAndDynamicMethodMatchers.size() - 1) { //索引是最后一个就调用被代理类的方法，interceptorsAndDynamicMethodMatchers = [ExposeInvocationInterceptor.ADVISOR,
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void afterrr()];
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void arounddd() ];
InstantiationModelAwarePointcutAdvisor: expression [pc1()]; advice method [public void beforeee()]]
return invokeJoinpoint(); //被代理类的方法
}
Object interceptorOrInterceptionAdvice = this.interceptorsAndDynamicMethodMatchers.get(++this.currentInterceptorIndex); //根据索引拿到第一个，第二个，。。
else {
return ((MethodInterceptor) interceptorOrInterceptionAdvice).invoke(this); //链是调用，this = invocation = ReflectiveMethodInvocation，
}
}
ExposeInvocationInterceptor类的invoke()方法
public Object invoke(MethodInvocation mi) throws Throwable {
MethodInvocation oldInvocation = invocation.get();
invocation.set(mi);
try {
return mi.proceed(); //mi = invocation = ReflectiveMethodInvocation，又调会去了，拿到第二个。
}
finally {
invocation.set(oldInvocation);
}
}
AspectAnnotation.afterrr(org.aspectj.lang.JoinPoint) 类：
public Object invoke(MethodInvocation mi) throws Throwable {
try {
return mi.proceed(); //mi = invocation = ReflectiveMethodInvocation，又调会去了，拿到第三个。after所以现在不会执行。
}
finally {
invokeAdviceMethod(getJoinPointMatch(), null, null);
}
}
AspectAnnotation.arounddd(org.aspectj.lang.ProceedingJoinPoint)类
public Object invoke(MethodInvocation mi) throws Throwable {
ProxyMethodInvocation pmi = (ProxyMethodInvocation) mi;//mi = invocation = ReflectiveMethodInvocation，
ProceedingJoinPoint pjp = lazyGetProceedingJoinPoint(pmi);
JoinPointMatch jpm = getJoinPointMatch(pmi);
return invokeAdviceMethod(pjp, jpm, null, null);
}
protected Object invokeAdviceMethod(JoinPoint jp, JoinPointMatch jpMatch, Object returnValue, Throwable t)
throws Throwable {
return invokeAdviceMethodWithGivenArgs(argBinding(jp, jpMatch, returnValue, t));
}
protected Object invokeAdviceMethodWithGivenArgs(Object[] args) throws Throwable {
try {
ReflectionUtils.makeAccessible(this.aspectJAdviceMethod);
return this.aspectJAdviceMethod.invoke(this.aspectInstanceFactory.getAspectInstance(), actualArgs);
}
public Object invoke(Object obj, Object... args)
{
MethodAccessor ma = methodAccessor; // read volatile
if (ma == null) {
ma = acquireMethodAccessor();
}
return ma.invoke(obj, args);
}
调到了
public void arounddd(ProceedingJoinPoint joinPoint) throws Throwable {
System.out.println("==============arounddd 前置通知=========");
joinPoint.proceed(); //MethodBeforeAdviceInterceptor去执行，
System.out.println("==============arounddd 后置通知=========");
}
public Object invoke(MethodInvocation mi) throws Throwable {
this.advice.before(mi.getMethod(), mi.getArguments(), mi.getThis() );//beforeee()方法执行，
return mi.proceed(); // 被代理类的方法执行，
}
public void beforeee(JoinPoint joinPoint) {
System.out.println("==============beforeee 前置通知=========");
}
public String doSomething(String param) {
System.out.println("==========AnnotationServiceImpl.doSomething=========");
return "==========AnnotationServiceImpl.doSomething";
}
最后执行after：
invokeAdviceMethod(getJoinPointMatch(), null, null);
protected Object invokeAdviceMethodWithGivenArgs(Object[] args) throws Throwable {
try {
ReflectionUtils.makeAccessible(this.aspectJAdviceMethod);
return this.aspectJAdviceMethod.invoke(this.aspectInstanceFactory.getAspectInstance(), actualArgs);
}
}
public Object invoke(Object obj, Object... args)
{
MethodAccessor ma = methodAccessor; // read volatile
if (ma == null) {
ma = acquireMethodAccessor();
}
return ma.invoke(obj, args);
}
public void afterrr(JoinPoint joinPoint) {
System.out.println("==============afterrr 后置通知=========");
}
==============arounddd 前置通知=========
==============beforeee 前置通知=========
==========AnnotationServiceImpl.doSomething=========
==============arounddd 后置通知=========
==============afterrr 后置通知=========
cglib的代理
return proxyFactory.getProxy(this.proxyClassLoader);
public Object getProxy(ClassLoader classLoader) {
try {
Class<?> rootClass = this.advised.getTargetClass(); //advised = ProxyFactory
Class<?> proxySuperClass = rootClass; //AnnotationServiceImpl
Callback[] callbacks = getCallbacks(rootClass);//[CglibAopProxy$DynamicAdvisedInterceptor@2ce86164,
CglibAopProxy$StaticUnadvisedInterceptor@5e8f9e2d,
CglibAopProxy$SerializableNoOp@51df223b,
CglibAopProxy$StaticDispatcher@fd46303,
CglibAopProxy$AdvisedDispatcher@60d8c0dc,
CglibAopProxy$EqualsInterceptor@4204541c,
CglibAopProxy$HashCodeInterceptor@6a62689d]
Class<?>[] types = new Class<?>[callbacks.length];
for (int x = 0; x < types.length; x++) {
types[x] = callbacks[x].getClass();
}
enhancer.setCallbackFilter(new ProxyCallbackFilter(
this.advised.getConfigurationOnlyCopy(), this.fixedInterceptorMap, this.fixedInterceptorOffset));
enhancer.setCallbackTypes(types);
return createProxyClassAndInstance(enhancer, callbacks);
}
}
调用方法时候：
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
try {
List<Object> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, targetClass); //
[ExposeInvocationInterceptor@65aa6596,
AspectJAfterAdvice: advice method [public void afterrr()]; aspect name 'aspectAnnotation',
AspectJAroundAdvice: advice method [public void arounddd() ]; aspect name 'aspectAnnotation',
MethodBeforeAdviceInterceptor@1ce61929]
Object retVal;
if (chain.isEmpty() && Modifier.isPublic(method.getModifiers())) {
retVal = methodProxy.invoke(target, args);
}
else {
// We need to create a method invocation...
retVal = new CglibMethodInvocation(proxy, target, method, args, targetClass, chain, methodProxy).proceed();
}
retVal = processReturnType(proxy, target, method, retVal);
return retVal;
}
}
public Object proceed() throws Throwable {
if (this.currentInterceptorIndex == this.interceptorsAndDynamicMethodMatchers.size() - 1) {
return invokeJoinpoint();
}
Object interceptorOrInterceptionAdvice =
this.interceptorsAndDynamicMethodMatchers.get(++this.currentInterceptorIndex);
else {
return ((MethodInterceptor) interceptorOrInterceptionAdvice).invoke(this);
}
}
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