javax.servlet
类 AsyncEvent

java.lang.Object
  javax.servlet.AsyncEvent

直接已知子类：

AsyncContinuation.AsyncEventState

public class AsyncEvent
extends Object

Event that gets fired when the asynchronous operation initiated on a ServletRequest (via a call to ServletRequest.startAsync() or ServletRequest.startAsync(ServletRequest, ServletResponse)) has completed, timed out, or produced an error.

从以下版本开始：

Servlet 3.0

构造方法摘要

AsyncEvent(AsyncContext context)
Constructs an AsyncEvent from the given AsyncContext.

AsyncEvent(AsyncContext context, ServletRequest request, ServletResponse response)
Constructs an AsyncEvent from the given AsyncContext, ServletRequest, and ServletResponse.

AsyncEvent(AsyncContext context, ServletRequest request, ServletResponse response, Throwable throwable)
Constructs an AsyncEvent from the given AsyncContext, ServletRequest, ServletResponse, and Throwable.

AsyncEvent(AsyncContext context, Throwable throwable)
Constructs an AsyncEvent from the given AsyncContext and Throwable.

方法摘要

AsyncContext	getAsyncContext() Gets the AsyncContext from this AsyncEvent.
ServletRequest	getSuppliedRequest() Gets the ServletRequest from this AsyncEvent.
ServletResponse	getSuppliedResponse() Gets the ServletResponse from this AsyncEvent.
Throwable	getThrowable() Gets the Throwable from this AsyncEvent.

从类 java.lang.Object 继承的方法

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

构造方法详细信息

AsyncEvent

public AsyncEvent(AsyncContext context)

Constructs an AsyncEvent from the given AsyncContext.

参数：

context - the AsyncContex to be delivered with this AsyncEvent

AsyncEvent

public AsyncEvent(AsyncContext context,
                  ServletRequest request,
                  ServletResponse response)

Constructs an AsyncEvent from the given AsyncContext, ServletRequest, and ServletResponse.

参数：

context - the AsyncContex to be delivered with this AsyncEvent

request - the ServletRequest to be delivered with this AsyncEvent

response - the ServletResponse to be delivered with this AsyncEvent

AsyncEvent

public AsyncEvent(AsyncContext context,
                  Throwable throwable)

Constructs an AsyncEvent from the given AsyncContext and Throwable.

参数：

context - the AsyncContex to be delivered with this AsyncEvent

throwable - the Throwable to be delivered with this AsyncEvent

AsyncEvent

public AsyncEvent(AsyncContext context,
                  ServletRequest request,
                  ServletResponse response,
                  Throwable throwable)

Constructs an AsyncEvent from the given AsyncContext, ServletRequest, ServletResponse, and Throwable.

参数：

context - the AsyncContex to be delivered with this AsyncEvent

request - the ServletRequest to be delivered with this AsyncEvent

response - the ServletResponse to be delivered with this AsyncEvent

throwable - the Throwable to be delivered with this AsyncEvent

方法详细信息

getAsyncContext

public AsyncContext getAsyncContext()

Gets the AsyncContext from this AsyncEvent.

返回：

the AsyncContext that was used to initialize this AsyncEvent

getSuppliedRequest

public ServletRequest getSuppliedRequest()

Gets the ServletRequest from this AsyncEvent.

If the AsyncListener to which this AsyncEvent is being delivered was added using AsyncContext.addListener(AsyncListener, ServletRequest, ServletResponse), the returned ServletRequest will be the same as the one supplied to the above method. If the AsyncListener was added via AsyncContext.addListener(AsyncListener), this method must return null.

返回：

the ServletRequest that was used to initialize this AsyncEvent, or null if this AsyncEvent was initialized without any ServletRequest

getSuppliedResponse

public ServletResponse getSuppliedResponse()

Gets the ServletResponse from this AsyncEvent.

If the AsyncListener to which this AsyncEvent is being delivered was added using AsyncContext.addListener(AsyncListener, ServletRequest, ServletResponse), the returned ServletResponse will be the same as the one supplied to the above method. If the AsyncListener was added via AsyncContext.addListener(AsyncListener), this method must return null.

返回：

the ServletResponse that was used to initialize this AsyncEvent, or null if this AsyncEvent was initialized without any ServletResponse

getThrowable

public Throwable getThrowable()

Gets the Throwable from this AsyncEvent.

返回：

the Throwable that was used to initialize this AsyncEvent, or null if this AsyncEvent was initialized without any Throwable