org.springframework.web.servlet.handler

Class HandlerInterceptorAdapter

java.lang.Object

org.springframework.web.servlet.handler.HandlerInterceptorAdapter

All Implemented Interfaces:

AsyncHandlerInterceptor, HandlerInterceptor

Direct Known Subclasses:

ConversionServiceExposingInterceptor, LocaleChangeInterceptor, ResourceUrlProviderExposingInterceptor, ThemeChangeInterceptor, UserRoleAuthorizationInterceptor

public abstract class HandlerInterceptorAdapter
extends Object
implements AsyncHandlerInterceptor

Abstract adapter class for the AsyncHandlerInterceptor interface, for simplified implementation of pre-only/post-only interceptors.

Since:

05.12.2003

Author:

Juergen Hoeller

Constructor Summary

Constructors

Constructor and Description
HandlerInterceptorAdapter()

Method Summary

Modifier and Type	Method and Description
void	afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) This implementation is empty.
void	afterConcurrentHandlingStarted(HttpServletRequest request, HttpServletResponse response, Object handler) This implementation is empty.
void	postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) This implementation is empty.
boolean	preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) This implementation always returns true.

Methods inherited from class java.lang.Object

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

Constructor Detail

HandlerInterceptorAdapter

public HandlerInterceptorAdapter()

Method Detail

preHandle

public boolean preHandle(HttpServletRequest request,
                         HttpServletResponse response,
                         Object handler)
                  throws Exception

This implementation always returns true.

Specified by:

preHandle in interface HandlerInterceptor

Parameters:

request - current HTTP request

response - current HTTP response

handler - chosen handler to execute, for type and/or instance evaluation

Returns:

true if the execution chain should proceed with the next interceptor or the handler itself. Else, DispatcherServlet assumes that this interceptor has already dealt with the response itself.

Throws:

Exception - in case of errors

postHandle

public void postHandle(HttpServletRequest request,
                       HttpServletResponse response,
                       Object handler,
                       ModelAndView modelAndView)
                throws Exception

This implementation is empty.

Specified by:

postHandle in interface HandlerInterceptor

Parameters:

request - current HTTP request

response - current HTTP response

handler - handler (or HandlerMethod) that started asynchronous execution, for type and/or instance examination

modelAndView - the ModelAndView that the handler returned (can also be null)

Throws:

Exception - in case of errors

afterCompletion

public void afterCompletion(HttpServletRequest request,
                            HttpServletResponse response,
                            Object handler,
                            Exception ex)
                     throws Exception

This implementation is empty.

Specified by:

afterCompletion in interface HandlerInterceptor

Parameters:

request - current HTTP request

response - current HTTP response

handler - handler (or HandlerMethod) that started asynchronous execution, for type and/or instance examination

ex - exception thrown on handler execution, if any

Throws:

Exception - in case of errors

afterConcurrentHandlingStarted

public void afterConcurrentHandlingStarted(HttpServletRequest request,
                                           HttpServletResponse response,
                                           Object handler)
                                    throws Exception

This implementation is empty.

Specified by:

afterConcurrentHandlingStarted in interface AsyncHandlerInterceptor

Parameters:

request - the current request

response - the current response

handler - the handler (or HandlerMethod) that started async execution, for type and/or instance examination

Throws:

Exception - in case of errors