urlfilenameviewcontroller.java

spring的源代码

/*
 * Copyright 2002-2004 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.mvc;

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

import org.springframework.web.servlet.ModelAndView;

/**
 * Controller that transforms the virtual filename at the end of a URL
 * to a view name. Example: "/index.html" -> "index"
 * @author Alef Arendsen
 */
public class UrlFilenameViewController implements Controller {

	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) {
		String uri = request.getRequestURI();
		int begin = uri.lastIndexOf('/');
		if (begin == -1) {
			begin = 0;
		}
		else {
			begin++;
		}
		int end;
		if (uri.indexOf(";") != -1) {
			end = uri.indexOf(";");
		}
		else if (uri.indexOf("?") != -1) {
			end = uri.indexOf("?");
		}
		else {
			end = uri.length();
		}
		String fileName = uri.substring(begin, end);
		if (fileName.indexOf(".") != -1) {
			fileName = fileName.substring(0, fileName.lastIndexOf("."));
		}
		return new ModelAndView(fileName);
	}

}