AsyncWebRequestInterceptor (Spring Framework 4.3.30.RELEASE API)

所有超级接口:
WebRequestInterceptor
所有已知实现类:
Log4jNestedDiagnosticContextInterceptor, OpenEntityManagerInViewInterceptor, OpenSessionInViewInterceptor, OpenSessionInViewInterceptor, OpenSessionInViewInterceptor
```
public interface AsyncWebRequestInterceptor
extends WebRequestInterceptor
```
Extends WebRequestInterceptor with a callback method invoked during asynchronous request handling.
When a handler starts asynchronous request handling, the DispatcherServlet exits without invoking postHandle and afterCompletion, as it normally does, since the results of request handling (e.g. ModelAndView) are not available in the current thread and handling is not yet complete. In such scenarios, the afterConcurrentHandlingStarted(WebRequest) method is invoked instead allowing implementations to perform tasks such as cleaning up thread bound attributes.
When asynchronous handling completes, the request is dispatched to the container for further processing. At this stage the DispatcherServlet invokes preHandle, postHandle and afterCompletion as usual.
从以下版本开始:
3.2
作者:
Rossen Stoyanchev
另请参阅:
WebAsyncManager

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`void`	`afterConcurrentHandlingStarted(WebRequest request)`	Called instead of `postHandle` and `afterCompletion`, when the the handler started handling the request concurrently.

从接口继承的方法 org.springframework.web.context.request.WebRequestInterceptor
afterCompletion, postHandle, preHandle

- 方法详细资料
  - afterConcurrentHandlingStarted
```
void afterConcurrentHandlingStarted(WebRequest request)
```
    Called instead of postHandle and afterCompletion, when the the handler started handling the request concurrently.
    参数:
    request - the current request