/*
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.servlet.handler;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.util.Assert;
import org.springframework.web.context.request.AsyncWebRequestInterceptor;
import org.springframework.web.context.request.WebRequestInterceptor;
import org.springframework.web.servlet.AsyncHandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
/**
* Adapter that implements the Servlet HandlerInterceptor interface
* and wraps an underlying WebRequestInterceptor.
*
* @author Juergen Hoeller
* @since 2.0
* @see org.springframework.web.context.request.WebRequestInterceptor
* @see org.springframework.web.servlet.HandlerInterceptor
*/
public class WebRequestHandlerInterceptorAdapter implements AsyncHandlerInterceptor {
private final WebRequestInterceptor requestInterceptor;
/**
* Create a new WebRequestHandlerInterceptorAdapter for the given WebRequestInterceptor.
* @param requestInterceptor the WebRequestInterceptor to wrap
*/
public WebRequestHandlerInterceptorAdapter(WebRequestInterceptor requestInterceptor) {
Assert.notNull(requestInterceptor, "WebRequestInterceptor must not be null");
this.requestInterceptor = requestInterceptor;
}
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
this.requestInterceptor.preHandle(new DispatcherServletWebRequest(request, response));
return true;
}
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView)
throws Exception {
this.requestInterceptor.postHandle(new DispatcherServletWebRequest(request, response),
(modelAndView != null && !modelAndView.wasCleared() ? modelAndView.getModelMap() : null));
}
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
throws Exception {
this.requestInterceptor.afterCompletion(new DispatcherServletWebRequest(request, response), ex);
}
public void afterConcurrentHandlingStarted(HttpServletRequest request, HttpServletResponse response, Object handler) {
if (this.requestInterceptor instanceof AsyncWebRequestInterceptor) {
AsyncWebRequestInterceptor asyncInterceptor = (AsyncWebRequestInterceptor) this.requestInterceptor;
DispatcherServletWebRequest webRequest = new DispatcherServletWebRequest(request, response);
asyncInterceptor.afterConcurrentHandlingStarted(webRequest);
}
}
}