下面列出了org.springframework.beans.BeanInstantiationException#org.springframework.cglib.proxy.Callback 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
}
else {
return false;
}
}
/**
* Create a new instance of a dynamically generated subclass implementing the
* required lookups.
* @param ctor constructor to use. If this is {@code null}, use the
* no-arg constructor (no parameterization, or Setter Injection)
* @param args arguments to use for the constructor.
* Ignored if the {@code ctor} parameter is {@code null}.
* @return new instance of the dynamically generated subclass
*/
public Object instantiate(@Nullable Constructor<?> ctor, Object... args) {
Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
Object instance;
if (ctor == null) {
instance = BeanUtils.instantiateClass(subclass);
}
else {
try {
Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
instance = enhancedSubclassConstructor.newInstance(args);
}
catch (Exception ex) {
throw new BeanInstantiationException(this.beanDefinition.getBeanClass(),
"Failed to invoke constructor for CGLIB enhanced subclass [" + subclass.getName() + "]", ex);
}
}
// SPR-10785: set callbacks directly on the instance instead of in the
// enhanced class (via the Enhancer) in order to avoid memory leaks.
Factory factory = (Factory) instance;
factory.setCallbacks(new Callback[] {NoOp.INSTANCE,
new LookupOverrideMethodInterceptor(this.beanDefinition, this.owner),
new ReplaceOverrideMethodInterceptor(this.beanDefinition, this.owner)});
return instance;
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
}
else {
return false;
}
}
/**
* Create a new instance of a dynamically generated subclass implementing the
* required lookups.
* @param ctor constructor to use. If this is {@code null}, use the
* no-arg constructor (no parameterization, or Setter Injection)
* @param args arguments to use for the constructor.
* Ignored if the {@code ctor} parameter is {@code null}.
* @return new instance of the dynamically generated subclass
*/
public Object instantiate(@Nullable Constructor<?> ctor, Object... args) {
Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
Object instance;
if (ctor == null) {
instance = BeanUtils.instantiateClass(subclass);
}
else {
try {
Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
instance = enhancedSubclassConstructor.newInstance(args);
}
catch (Exception ex) {
throw new BeanInstantiationException(this.beanDefinition.getBeanClass(),
"Failed to invoke constructor for CGLIB enhanced subclass [" + subclass.getName() + "]", ex);
}
}
// SPR-10785: set callbacks directly on the instance instead of in the
// enhanced class (via the Enhancer) in order to avoid memory leaks.
Factory factory = (Factory) instance;
factory.setCallbacks(new Callback[] {NoOp.INSTANCE,
new LookupOverrideMethodInterceptor(this.beanDefinition, this.owner),
new ReplaceOverrideMethodInterceptor(this.beanDefinition, this.owner)});
return instance;
}
private Callback[] getCallbacks() throws Exception {
// Choose an "aop" interceptor (used for AOP calls).
Callback aopInterceptor = new EagleTraceCglibProxy.DynamicAdvisedInterceptor(this.advised);
// Choose a "straight to target" interceptor. (used for calls that are
// unadvised but can return this). May be required to expose the proxy.
Callback targetInterceptor = new EagleTraceCglibProxy.DynamicUnadvisedInterceptor(this.advised.getTargetSource());
// Choose a "direct to target" dispatcher (used for
// unadvised calls to static targets that cannot return this).
Callback targetDispatcher = new EagleTraceCglibProxy.SerializableNoOp();
Callback[] callbacks = new Callback[]{
aopInterceptor, // for normal advice
targetInterceptor, // invoke target without considering advice, if optimized
new EagleTraceCglibProxy.SerializableNoOp(), // no override for methods mapped to this
targetDispatcher, this.advisedDispatcher,
new EagleTraceCglibProxy.EqualsInterceptor(this.advised),
new EagleTraceCglibProxy.HashCodeInterceptor(this.advised)
};
return callbacks;
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EagleTraceCglibProxy.EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EagleTraceCglibProxy.EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
} else {
return false;
}
}
@Override
@SuppressWarnings("unchecked")
public <T> T createInstance(ConfigurationModel configurationModel, ClassLoader classLoader) {
Class<?> configurationType = configurationModel.getConfigurationType();
Enhancer enhancer = new Enhancer();
enhancer.setClassLoader(classLoader);
enhancer.setNamingPolicy(Conf4jNamingPolicy.INSTANCE);
enhancer.setInterceptDuringConstruction(false);
if (configurationType.isInterface()) {
enhancer.setInterfaces(new Class<?>[]{configurationType, Serializable.class});
} else {
enhancer.setSuperclass(configurationType);
enhancer.setInterfaces(new Class<?>[]{Serializable.class});
}
enhancer.setCallbackFilter(new ProxyCallbackFilter(configurationModel));
enhancer.setCallbacks(new Callback[]{
new CglibStaticConfigurationMethodInterceptor(configurationModel),
new SerializableNoOp(),
});
return (T) enhancer.create();
}
@Override
public <T> T createInstance(ConfigurationModel configurationModel, ClassLoader classLoader) {
Class<?> configurationType = configurationModel.getConfigurationType();
Enhancer enhancer = new Enhancer();
enhancer.setClassLoader(classLoader);
enhancer.setNamingPolicy(Conf4jNamingPolicy.INSTANCE);
enhancer.setInterceptDuringConstruction(false);
if (configurationType.isInterface()) {
enhancer.setInterfaces(new Class<?>[]{configurationType, DynamicConfiguration.class});
} else {
enhancer.setSuperclass(configurationType);
enhancer.setInterfaces(new Class<?>[]{DynamicConfiguration.class});
}
enhancer.setCallbackFilter(new ProxyCallbackFilter(configurationModel));
enhancer.setCallbacks(new Callback[]{
new CglibDynamicConfigurationMethodInterceptor(configurationModel),
new SerializableNoOp()
});
@SuppressWarnings("unchecked")
T instance = (T) enhancer.create();
return instance;
}
@SuppressWarnings({ "rawtypes", "unchecked" })
protected Object proxy(
final String id,
final TypeInformation<?> type,
final A annotation,
final ResolverCallback<A> callback) {
final ProxyInterceptor interceptor = new ProxyInterceptor(id, type, annotation, callback, conversionService);
if (type.getType().isInterface()) {
final ProxyFactory proxyFactory = new ProxyFactory(new Class<?>[] { type.getType() });
for (final Class<?> interf : type.getType().getInterfaces()) {
proxyFactory.addInterface(interf);
}
proxyFactory.addInterface(LazyLoadingProxy.class);
proxyFactory.addAdvice(interceptor);
return proxyFactory.getProxy();
} else {
final Factory factory = (Factory) objenesis.newInstance(enhancedTypeFor(type.getType()));
factory.setCallbacks(new Callback[] { interceptor });
return factory;
}
}
/**
* Create a new instance of a dynamically generated subclass implementing the
* required lookups.
* @param ctor constructor to use. If this is {@code null}, use the
* no-arg constructor (no parameterization, or Setter Injection)
* @param args arguments to use for the constructor.
* Ignored if the {@code ctor} parameter is {@code null}.
* @return new instance of the dynamically generated subclass
*/
public Object instantiate(Constructor<?> ctor, Object... args) {
Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
Object instance;
if (ctor == null) {
instance = BeanUtils.instantiateClass(subclass);
}
else {
try {
Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
instance = enhancedSubclassConstructor.newInstance(args);
}
catch (Exception ex) {
throw new BeanInstantiationException(this.beanDefinition.getBeanClass(),
"Failed to invoke constructor for CGLIB enhanced subclass [" + subclass.getName() + "]", ex);
}
}
// SPR-10785: set callbacks directly on the instance instead of in the
// enhanced class (via the Enhancer) in order to avoid memory leaks.
Factory factory = (Factory) instance;
factory.setCallbacks(new Callback[] {NoOp.INSTANCE,
new LookupOverrideMethodInterceptor(this.beanDefinition, this.owner),
new ReplaceOverrideMethodInterceptor(this.beanDefinition, this.owner)});
return instance;
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
}
else {
return false;
}
}
@Override
public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) {
Object other = args[0];
if (proxy == other) {
return true;
}
if (other instanceof Factory) {
Callback callback = ((Factory) other).getCallback(INVOKE_EQUALS);
if (!(callback instanceof EqualsInterceptor)) {
return false;
}
AdvisedSupport otherAdvised = ((EqualsInterceptor) callback).advised;
return AopProxyUtils.equalsInProxy(this.advised, otherAdvised);
}
else {
return false;
}
}
/**
* Create a new instance of a dynamically generated subclass implementing the
* required lookups.
* @param ctor constructor to use. If this is {@code null}, use the
* no-arg constructor (no parameterization, or Setter Injection)
* @param args arguments to use for the constructor.
* Ignored if the {@code ctor} parameter is {@code null}.
* @return new instance of the dynamically generated subclass
*/
public Object instantiate(Constructor<?> ctor, Object... args) {
Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
Object instance;
if (ctor == null) {
instance = BeanUtils.instantiate(subclass);
}
else {
try {
Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
instance = enhancedSubclassConstructor.newInstance(args);
}
catch (Exception ex) {
throw new BeanInstantiationException(this.beanDefinition.getBeanClass(),
"Failed to invoke constructor for CGLIB enhanced subclass [" + subclass.getName() + "]", ex);
}
}
// SPR-10785: set callbacks directly on the instance instead of in the
// enhanced class (via the Enhancer) in order to avoid memory leaks.
Factory factory = (Factory) instance;
factory.setCallbacks(new Callback[] {NoOp.INSTANCE,
new LookupOverrideMethodInterceptor(this.beanDefinition, this.owner),
new ReplaceOverrideMethodInterceptor(this.beanDefinition, this.owner)});
return instance;
}
protected Object createProxyClassAndInstance(Enhancer enhancer, Callback[] callbacks) {
enhancer.setInterceptDuringConstruction(false);
enhancer.setCallbacks(callbacks);
return (this.constructorArgs != null && this.constructorArgTypes != null ?
enhancer.create(this.constructorArgTypes, this.constructorArgs) :
enhancer.create());
}
public ConditionalCallbackFilter(Callback[] callbacks) {
this.callbacks = callbacks;
this.callbackTypes = new Class<?>[callbacks.length];
for (int i = 0; i < callbacks.length; i++) {
this.callbackTypes[i] = callbacks[i].getClass();
}
}
@Override
public int accept(Method method) {
for (int i = 0; i < this.callbacks.length; i++) {
Callback callback = this.callbacks[i];
if (!(callback instanceof ConditionalCallback) || ((ConditionalCallback) callback).isMatch(method)) {
return i;
}
}
throw new IllegalStateException("No callback available for method " + method.getName());
}
protected Object createProxyClassAndInstance(Enhancer enhancer, Callback[] callbacks) {
enhancer.setInterceptDuringConstruction(false);
enhancer.setCallbacks(callbacks);
return (this.constructorArgs != null && this.constructorArgTypes != null ?
enhancer.create(this.constructorArgTypes, this.constructorArgs) :
enhancer.create());
}
public ConditionalCallbackFilter(Callback[] callbacks) {
this.callbacks = callbacks;
this.callbackTypes = new Class<?>[callbacks.length];
for (int i = 0; i < callbacks.length; i++) {
this.callbackTypes[i] = callbacks[i].getClass();
}
}
@Override
public int accept(Method method) {
for (int i = 0; i < this.callbacks.length; i++) {
Callback callback = this.callbacks[i];
if (!(callback instanceof ConditionalCallback) || ((ConditionalCallback) callback).isMatch(method)) {
return i;
}
}
throw new IllegalStateException("No callback available for method " + method.getName());
}
protected Object createProxyClassAndInstance(Enhancer enhancer, Callback[] callbacks) {
enhancer.setInterceptDuringConstruction(false);
enhancer.setCallbacks(callbacks);
return (this.constructorArgs != null ?
enhancer.create(this.constructorArgTypes, this.constructorArgs) :
enhancer.create());
}
public ConditionalCallbackFilter(Callback[] callbacks) {
this.callbacks = callbacks;
this.callbackTypes = new Class<?>[callbacks.length];
for (int i = 0; i < callbacks.length; i++) {
this.callbackTypes[i] = callbacks[i].getClass();
}
}
protected Object createProxyClassAndInstance(Enhancer enhancer, Callback[] callbacks) {
enhancer.setInterceptDuringConstruction(false);
enhancer.setCallbacks(callbacks);
return (this.constructorArgs != null ?
enhancer.create(this.constructorArgTypes, this.constructorArgs) :
enhancer.create());
}
private static SimpleLazyDynamicInvocationHandler getProxy(Object object) {
if (Proxy.isProxyClass(object.getClass())
&& (Proxy.getInvocationHandler(object) instanceof SimpleLazyDynamicInvocationHandler)) {
return (SimpleLazyDynamicInvocationHandler) Proxy
.getInvocationHandler(object);
}
else if (object instanceof Factory) {
Callback[] callbacks = ((Factory) object).getCallbacks();
if (callbacks != null && callbacks.length == 1
&& callbacks[0] instanceof SimpleLazyDynamicInvocationHandler) {
return (SimpleLazyDynamicInvocationHandler) callbacks[0];
}
}
return null;
}
/**
* Create a new instance of a dynamically generated subclass implementing the
* required lookups.
* @param ctor constructor to use. If this is {@code null}, use the
* no-arg constructor (no parameterization, or Setter Injection)
* @param args arguments to use for the constructor.
* Ignored if the {@code ctor} parameter is {@code null}.
* @return new instance of the dynamically generated subclass
*/
Object instantiate(Constructor<?> ctor, Object[] args) {
Class<?> subclass = createEnhancedSubclass(this.beanDefinition);
Object instance;
if (ctor == null) {
instance = BeanUtils.instantiate(subclass);
}
else {
try {
Constructor<?> enhancedSubclassConstructor = subclass.getConstructor(ctor.getParameterTypes());
instance = enhancedSubclassConstructor.newInstance(args);
}
catch (Exception e) {
throw new BeanInstantiationException(this.beanDefinition.getBeanClass(), String.format(
"Failed to invoke construcor for CGLIB enhanced subclass [%s]", subclass.getName()), e);
}
}
// SPR-10785: set callbacks directly on the instance instead of in the
// enhanced class (via the Enhancer) in order to avoid memory leaks.
Factory factory = (Factory) instance;
factory.setCallbacks(new Callback[] { NoOp.INSTANCE,//
new LookupOverrideMethodInterceptor(beanDefinition, owner),//
new ReplaceOverrideMethodInterceptor(beanDefinition, owner) });
return instance;
}
protected Object createProxyClassAndInstance(Enhancer enhancer, Callback[] callbacks) {
enhancer.setInterceptDuringConstruction(false);
enhancer.setCallbacks(callbacks);
return (this.constructorArgs != null ?
enhancer.create(this.constructorArgTypes, this.constructorArgs) :
enhancer.create());
}
public ConditionalCallbackFilter(Callback[] callbacks) {
this.callbacks = callbacks;
this.callbackTypes = new Class<?>[callbacks.length];
for (int i = 0; i < callbacks.length; i++) {
this.callbackTypes[i] = callbacks[i].getClass();
}
}
private A createEnhancer(Callback cb) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(AImpl.class);
enhancer.setCallback(cb);
final A a = (A) enhancer.create();
return a;
}
private Callback[] getCallbacks(Class<?> rootClass) throws Exception {
// Parameters used for optimization choices...
boolean exposeProxy = this.advised.isExposeProxy();
boolean isFrozen = this.advised.isFrozen();
boolean isStatic = this.advised.getTargetSource().isStatic();
// Choose an "aop" interceptor (used for AOP calls).
Callback aopInterceptor = new DynamicAdvisedInterceptor(this.advised);
// Choose a "straight to target" interceptor. (used for calls that are
// unadvised but can return this). May be required to expose the proxy.
Callback targetInterceptor;
if (exposeProxy) {
targetInterceptor = (isStatic ?
new StaticUnadvisedExposedInterceptor(this.advised.getTargetSource().getTarget()) :
new DynamicUnadvisedExposedInterceptor(this.advised.getTargetSource()));
}
else {
targetInterceptor = (isStatic ?
new StaticUnadvisedInterceptor(this.advised.getTargetSource().getTarget()) :
new DynamicUnadvisedInterceptor(this.advised.getTargetSource()));
}
// Choose a "direct to target" dispatcher (used for
// unadvised calls to static targets that cannot return this).
Callback targetDispatcher = (isStatic ?
new StaticDispatcher(this.advised.getTargetSource().getTarget()) : new SerializableNoOp());
Callback[] mainCallbacks = new Callback[] {
aopInterceptor, // for normal advice
targetInterceptor, // invoke target without considering advice, if optimized
new SerializableNoOp(), // no override for methods mapped to this
targetDispatcher, this.advisedDispatcher,
new EqualsInterceptor(this.advised),
new HashCodeInterceptor(this.advised)
};
Callback[] callbacks;
// If the target is a static one and the advice chain is frozen,
// then we can make some optimizations by sending the AOP calls
// direct to the target using the fixed chain for that method.
if (isStatic && isFrozen) {
Method[] methods = rootClass.getMethods();
Callback[] fixedCallbacks = new Callback[methods.length];
this.fixedInterceptorMap = new HashMap<>(methods.length);
// TODO: small memory optimization here (can skip creation for methods with no advice)
for (int x = 0; x < methods.length; x++) {
Method method = methods[x];
List<Object> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(method, rootClass);
fixedCallbacks[x] = new FixedChainStaticTargetInterceptor(
chain, this.advised.getTargetSource().getTarget(), this.advised.getTargetClass());
this.fixedInterceptorMap.put(method, x);
}
// Now copy both the callbacks from mainCallbacks
// and fixedCallbacks into the callbacks array.
callbacks = new Callback[mainCallbacks.length + fixedCallbacks.length];
System.arraycopy(mainCallbacks, 0, callbacks, 0, mainCallbacks.length);
System.arraycopy(fixedCallbacks, 0, callbacks, mainCallbacks.length, fixedCallbacks.length);
this.fixedInterceptorOffset = mainCallbacks.length;
}
else {
callbacks = mainCallbacks;
}
return callbacks;
}
private Callback[] getCallbacks(Class<?> rootClass) throws Exception {
// Parameters used for optimization choices...
boolean exposeProxy = this.advised.isExposeProxy();
boolean isFrozen = this.advised.isFrozen();
boolean isStatic = this.advised.getTargetSource().isStatic();
// Choose an "aop" interceptor (used for AOP calls).
Callback aopInterceptor = new DynamicAdvisedInterceptor(this.advised);
// Choose a "straight to target" interceptor. (used for calls that are
// unadvised but can return this). May be required to expose the proxy.
Callback targetInterceptor;
if (exposeProxy) {
targetInterceptor = (isStatic ?
new StaticUnadvisedExposedInterceptor(this.advised.getTargetSource().getTarget()) :
new DynamicUnadvisedExposedInterceptor(this.advised.getTargetSource()));
}
else {
targetInterceptor = (isStatic ?
new StaticUnadvisedInterceptor(this.advised.getTargetSource().getTarget()) :
new DynamicUnadvisedInterceptor(this.advised.getTargetSource()));
}
// Choose a "direct to target" dispatcher (used for
// unadvised calls to static targets that cannot return this).
Callback targetDispatcher = (isStatic ?
new StaticDispatcher(this.advised.getTargetSource().getTarget()) : new SerializableNoOp());
Callback[] mainCallbacks = new Callback[] {
aopInterceptor, // for normal advice
targetInterceptor, // invoke target without considering advice, if optimized
new SerializableNoOp(), // no override for methods mapped to this
targetDispatcher, this.advisedDispatcher,
new EqualsInterceptor(this.advised),
new HashCodeInterceptor(this.advised)
};
Callback[] callbacks;
// If the target is a static one and the advice chain is frozen,
// then we can make some optimizations by sending the AOP calls
// direct to the target using the fixed chain for that method.
if (isStatic && isFrozen) {
Method[] methods = rootClass.getMethods();
Callback[] fixedCallbacks = new Callback[methods.length];
this.fixedInterceptorMap = new HashMap<>(methods.length);
// TODO: small memory optimization here (can skip creation for methods with no advice)
for (int x = 0; x < methods.length; x++) {
List<Object> chain = this.advised.getInterceptorsAndDynamicInterceptionAdvice(methods[x], rootClass);
fixedCallbacks[x] = new FixedChainStaticTargetInterceptor(
chain, this.advised.getTargetSource().getTarget(), this.advised.getTargetClass());
this.fixedInterceptorMap.put(methods[x].toString(), x);
}
// Now copy both the callbacks from mainCallbacks
// and fixedCallbacks into the callbacks array.
callbacks = new Callback[mainCallbacks.length + fixedCallbacks.length];
System.arraycopy(mainCallbacks, 0, callbacks, 0, mainCallbacks.length);
System.arraycopy(fixedCallbacks, 0, callbacks, mainCallbacks.length, fixedCallbacks.length);
this.fixedInterceptorOffset = mainCallbacks.length;
}
else {
callbacks = mainCallbacks;
}
return callbacks;
}
public static Object createMockFor(Class clazz, MethodInterceptor interceptor){
Class proxyCls = createMockClass(clazz);
Factory proxy = (Factory)newInstance(proxyCls);
proxy.setCallbacks(new Callback[] {interceptor});
return proxy;
}