程序包 infra.aop.framework

类 JdkDynamicAopProxy

java.lang.Object

infra.aop.framework.JdkDynamicAopProxy

所有已实现的接口:

AopProxy, Serializable, InvocationHandler

final class JdkDynamicAopProxy
extends Object
implements AopProxy, InvocationHandler, Serializable

JDK-based AopProxy implementation for the AOP framework, based on JDK dynamic proxies.

Creates a dynamic proxy, implementing the interfaces exposed by the AopProxy. Dynamic proxies cannot be used to proxy methods defined in classes, rather than interfaces.

Objects of this type should be obtained through proxy factories, configured by an AdvisedSupport class. This class is internal to AOP framework and need not be used directly by client code.

Proxies created using this class will be thread-safe if the underlying (target) class is thread-safe.

Proxies are serializable so long as all Advisors (including Advices and Pointcuts) and the TargetSource are serializable.

从以下版本开始:

3.0 2021/2/1 22:42

作者:

Rod Johnson, Juergen Hoeller, Rob Harrop, Dave Syer, Harry Yang

另请参阅:

• Proxy
• AdvisedSupport
• ProxyFactory

嵌套类概要

嵌套类

修饰符和类型	类	说明
(专用程序包) static final class	JdkDynamicAopProxy.ProxiedInterfacesCache	Holder for the complete proxied interfaces and derived metadata, to be cached in AdvisedSupport.proxyMetadataCache.

字段概要

字段

修饰符和类型	字段	说明
private final AdvisedSupport	advised	Config used to configure this proxy.
private JdkDynamicAopProxy.ProxiedInterfacesCache	cache	Cached in AdvisedSupport.proxyMetadataCache.
private static final infra.logging.Logger	logger	We use a static Log to avoid serialization issues.
private static final long	serialVersionUID

构造器概要

构造器

构造器	说明
JdkDynamicAopProxy(AdvisedSupport config)	Construct a new JdkDynamicAopProxy for the given AOP configuration.

方法概要

修饰符和类型	方法	说明
private ClassLoader	determineClassLoader(ClassLoader classLoader)	Determine whether the JDK bootstrap or platform loader has been suggested -> use higher-level loader which can see infrastructure classes instead.
boolean	equals(Object other)	Equality means interfaces, advisors and TargetSource are equal.
Object	getProxy()	Create a new proxy object.
Object	getProxy(ClassLoader classLoader)	Create a new proxy object.
Class<?>	getProxyClass(ClassLoader classLoader)	Determine the proxy class.
int	hashCode()	Proxy uses the hash code of the TargetSource.
Object	invoke(Object proxy, Method method, Object[] args)	Implementation of InvocationHandler.invoke.
private void	readObject(ObjectInputStream ois)

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

字段详细资料

serialVersionUID

private static final long serialVersionUID

另请参阅:

• 常量字段值

logger

private static final infra.logging.Logger logger

We use a static Log to avoid serialization issues.

advised

private final AdvisedSupport advised

Config used to configure this proxy.

cache

private transient JdkDynamicAopProxy.ProxiedInterfacesCache cache

Cached in AdvisedSupport.proxyMetadataCache.

构造器详细资料

JdkDynamicAopProxy

public JdkDynamicAopProxy(AdvisedSupport config)

Construct a new JdkDynamicAopProxy for the given AOP configuration.

参数:

config - the AOP configuration as AdvisedSupport object

抛出:

AopConfigException - if the config is invalid. We try to throw an informative exception in this case, rather than let a mysterious failure happen later.

方法详细资料

getProxy

public Object getProxy()

从接口复制的说明: AopProxy

Create a new proxy object.

Uses the AopProxy's default class loader (if necessary for proxy creation): usually, the thread context class loader.

指定者:

getProxy 在接口中 AopProxy

返回:

the new proxy object (never null)

另请参阅:

• Thread.getContextClassLoader()

getProxy

public Object getProxy(@Nullable
 ClassLoader classLoader)

从接口复制的说明: AopProxy

Create a new proxy object.

Uses the given class loader (if necessary for proxy creation). null will simply be passed down and thus lead to the low-level proxy facility's default, which is usually different from the default chosen by the AopProxy implementation's AopProxy.getProxy() method.

指定者:

getProxy 在接口中 AopProxy

参数:

classLoader - the class loader to create the proxy with (or null for the low-level proxy facility's default)

返回:

the new proxy object (never null)

getProxyClass

public Class<?> getProxyClass(@Nullable
 ClassLoader classLoader)

从接口复制的说明: AopProxy

Determine the proxy class.

指定者:

getProxyClass 在接口中 AopProxy

参数:

classLoader - the class loader to create the proxy class with (or null for the low-level proxy facility's default)

返回:

the proxy class

determineClassLoader

private ClassLoader determineClassLoader(@Nullable
 ClassLoader classLoader)

Determine whether the JDK bootstrap or platform loader has been suggested -> use higher-level loader which can see infrastructure classes instead.

invoke

@Nullable
public Object invoke(Object proxy,
 Method method,
 Object[] args)
              throws Throwable

Implementation of InvocationHandler.invoke.

Callers will see exactly the exception thrown by the target, unless a hook method throws an exception.

指定者:

invoke 在接口中 InvocationHandler

抛出:

Throwable

equals

public boolean equals(Object other)

Equality means interfaces, advisors and TargetSource are equal.

The compared object may be a JdkDynamicAopProxy instance itself or a dynamic proxy wrapping a JdkDynamicAopProxy instance.

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

Proxy uses the hash code of the TargetSource.

覆盖:

hashCode 在类中 Object

readObject

private void readObject(ObjectInputStream ois)
                 throws IOException,
ClassNotFoundException

抛出:

IOException

ClassNotFoundException