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Spring Framework example source code file (TilesView.java)

This example Spring Framework source code file (TilesView.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Spring Framework tags/keywords

abstracturlbasedview, have, http, object, object, request, requestcontext, response, servlet, servletcontext, servletcontext, servletexception, servletexception, tiles, tilesconfigurer, tilescontainer, tilesview, tilesview, util

The Spring Framework TilesView.java source code

/*
 * Copyright 2002-2008 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.web.servlet.view.tiles2;

import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.tiles.TilesContainer;
import org.apache.tiles.access.TilesAccess;

import org.springframework.web.servlet.support.JstlUtils;
import org.springframework.web.servlet.support.RequestContext;
import org.springframework.web.servlet.view.AbstractUrlBasedView;
import org.springframework.web.util.WebUtils;

/**
 * {@link org.springframework.web.servlet.View} implementation that retrieves a
 * Tiles definition. The "url" property is interpreted as name of a Tiles definition.
 *
 * <p>This class builds on Tiles2, which requires JSP 2.0.
 * JSTL support is integrated out of the box due to JSTL's inclusion in JSP 2.0.
 *
 * <p>Depends on a TilesContainer which must be available in
 * the ServletContext. This container is typically set up via a
 * {@link TilesConfigurer} bean definition in the application context.
 *
 * @author Juergen Hoeller
 * @since 2.5
 * @see #setUrl
 * @see TilesConfigurer
 */
public class TilesView extends AbstractUrlBasedView {

	protected void renderMergedOutputModel(Map model, HttpServletRequest request, HttpServletResponse response)
			throws Exception {

		ServletContext servletContext = getServletContext();
		TilesContainer container = TilesAccess.getContainer(servletContext);
		if (container == null) {
			throw new ServletException("Tiles container is not initialized. " +
					"Have you added a TilesConfigurer to your web application context?");
		}

		exposeModelAsRequestAttributes(model, request);
		JstlUtils.exposeLocalizationContext(new RequestContext(request, servletContext));

		if (!response.isCommitted()) {
			// Tiles is going to use a forward, but some web containers (e.g. OC4J 10.1.3)
			// do not properly expose the Servlet 2.4 forward request attributes... However,
			// must not do this on Servlet 2.5 or above, mainly for GlassFish compatibility.
			ServletContext sc = getServletContext();
			if (sc.getMajorVersion() == 2 && sc.getMinorVersion() < 5) {
				WebUtils.exposeForwardRequestAttributes(request);
			}
		}

		container.render(getUrl(), new Object[] {request, response});
	}

}

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