org.springframework.js.ajax.AjaxUrlBasedViewResolver Maven / Gradle / Ivy
/*
* Copyright 2004-2008 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.js.ajax;
import java.io.IOException;
import java.util.Locale;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.view.RedirectView;
import org.springframework.web.servlet.view.UrlBasedViewResolver;
/**
* View resolver that provides special view resolution for Spring Javascript Ajax requests.
*
* @author Jeremy Grelle
*
*/
public class AjaxUrlBasedViewResolver extends UrlBasedViewResolver {
/**
* Overridden to implement check for "redirect:" prefix.
*
* Redirect requires special behavior on an Ajax request.
*/
protected View createView(String viewName, Locale locale) throws Exception {
// If this resolver is not supposed to handle the given view,
// return null to pass on to the next resolver in the chain.
if (!canHandle(viewName, locale)) {
return null;
}
// Check for special "redirect:" prefix.
if (viewName.startsWith(REDIRECT_URL_PREFIX)) {
String redirectUrl = viewName.substring(REDIRECT_URL_PREFIX.length());
return new AjaxRedirectView(redirectUrl, isRedirectContextRelative(), isRedirectHttp10Compatible());
}
return super.createView(viewName, locale);
}
private class AjaxRedirectView extends RedirectView implements View {
private AjaxHandler ajaxHandler = new SpringJavascriptAjaxHandler();
public AjaxRedirectView(String redirectUrl, boolean redirectContextRelative, boolean redirectHttp10Compatible) {
super(redirectUrl, redirectContextRelative, redirectHttp10Compatible);
}
protected void sendRedirect(HttpServletRequest request, HttpServletResponse response, String targetUrl,
boolean http10Compatible) throws IOException {
if (ajaxHandler.isAjaxRequest(request, response)) {
ajaxHandler.sendAjaxRedirect(targetUrl, request, response, false);
} else {
super.sendRedirect(request, response, targetUrl, http10Compatible);
}
}
}
}