/*
* Copyright 2008 biaoping.yin
*
* 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.frameworkset.web.servlet.mvc;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;
import org.frameworkset.http.converter.HttpMessageConverter;
import org.frameworkset.web.servlet.Controller;
import org.frameworkset.web.servlet.DispatchServlet;
import org.frameworkset.web.servlet.HandlerAdapter;
import org.frameworkset.web.servlet.ModelAndView;
import org.frameworkset.web.servlet.handler.HandlerMeta;
import org.frameworkset.web.servlet.handler.HandlerUtils;
import org.frameworkset.web.servlet.handler.PathURLNotSetException;
import org.frameworkset.web.servlet.view.AbstractUrlBasedView;
import org.frameworkset.web.servlet.view.UrlBasedViewResolver;
/**
* @FIXME
* <p>Title: SimpleControllerHandlerAdapter.java</p>
* <p>Description: </p>
* <p>bboss workgroup</p>
* <p>Copyright (c) 2008</p>
* @Date 2010-9-24
* @author biaoping.yin
* @version 1.0
*/
public class SimpleControllerHandlerAdapter implements HandlerAdapter {
private HttpMessageConverter[] messageConverters;
private static final String mname = "handleRequest";
public boolean supports(HandlerMeta handler) {
return !handler.isWebsocket() && (handler.getHandler() instanceof Controller);
}
public ModelAndView handle(HttpServletRequest request, HttpServletResponse response,PageContext pageContext, HandlerMeta handlerMeta)
throws Exception {
if(this.messageConverters != null && messageConverters.length > 0)
{
try
{
request.setAttribute(DispatchServlet.messageConverters_KEY, this.messageConverters);
ModelAndView mav = ((Controller) handlerMeta.getHandler()).handleRequest(request, response,pageContext);
if(mav != null )
{
if(mav.getView() != null && mav.getView() instanceof AbstractUrlBasedView)
{
//处理path:类型路径
AbstractUrlBasedView view = (AbstractUrlBasedView) mav.getView();
String url = view.getUrl();
if(UrlBasedViewResolver.isPathVariable(url))
{
url = handlerMeta.getUrlPath(url,mname,handlerMeta.getHandler(),request);
view.setUrl(url);
}
}
else if(UrlBasedViewResolver.isPathVariable(mav.getViewName()))
{
mav.setViewName(handlerMeta.getUrlPath(mav.getViewName(),mname,handlerMeta.getHandler(),request));
}
}
return mav;
}
catch(PathURLNotSetException ex)
{
return HandlerUtils.handleNoSuchRequestHandlingMethod(ex, request, response);
}
finally
{
request.removeAttribute(DispatchServlet.messageConverters_KEY);
}
}
else
{
try
{
ModelAndView mav = ((Controller) handlerMeta.getHandler()).handleRequest(request, response,pageContext);
if(mav != null && UrlBasedViewResolver.isPathVariable(mav.getViewName()))
{
mav.setViewName(handlerMeta.getUrlPath(mav.getViewName(),mname,handlerMeta.getHandler(),request));
}
return mav;
}
catch(PathURLNotSetException ex)
{
return HandlerUtils.handleNoSuchRequestHandlingMethod(ex, request, response);
}
}
}
public long getLastModified(HttpServletRequest request, HandlerMeta handler) {
if (handler.getHandler() instanceof LastModified) {
return ((LastModified) handler.getHandler()).getLastModified(request);
}
return -1L;
}
public void setMessageConverters(HttpMessageConverter[] messageConverters) {
this.messageConverters = messageConverters;
}
public boolean containMessageConverters() {
return this.messageConverters != null && this.messageConverters.length > 0;
}
@Override
public void destroy() {
messageConverters = null;
}
}