程序包 cn.taketoday.web

接口 HttpRequestHandler

所有已知子接口:

Controller

所有已知实现类:

AbstractController, AbstractHandlerMapping.PreFlightHandler, AbstractUrlViewController, ActionMappingAnnotationHandler, DefaultServletHttpRequestHandler, HandlerExecutionChain, InterceptableRequestHandler, NotFoundHandler, ParameterizableViewController, ResourceHttpRequestHandler, ServletForwardingController, ServletWrappingController, SingletonActionMappingAnnotationHandler, SuppliedActionMappingAnnotationHandler, UrlFilenameViewController

函数接口:

这是一个函数接口, 因此可用作 lambda 表达式或方法引用的赋值目标。

@FunctionalInterface
public interface HttpRequestHandler

Plain handler interface for components that process HTTP requests

从以下版本开始:

2019-12-21 17:37

作者:

Harry Yang

另请参阅:

• ReturnValueHandler

字段概要

字段

修饰符和类型	字段	说明
static final Object	NONE_RETURN_VALUE	This value indicates that the handler did not return a value, or the result has been processed

方法概要

修饰符和类型	方法	说明
Object	handleRequest(RequestContext request)	Process the request and return a result object which the DispatcherHandler will handle.

字段详细资料

NONE_RETURN_VALUE

static final Object NONE_RETURN_VALUE

This value indicates that the handler did not return a value, or the result has been processed

方法详细资料

handleRequest

@Nullable
Object handleRequest(RequestContext request)
              throws Throwable

Process the request and return a result object which the DispatcherHandler will handle. A null return value is not an error: it indicates that this handler completed request processing itself and that there is therefore no explicit result to handle. a NONE_RETURN_VALUE indicates that no result to handle by ReturnValueHandler

参数:

request - Current request context

返回:

Result to be handled by ReturnValueHandler

抛出:

Throwable - If any exception occurred

另请参阅:

• ReturnValueHandler