/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.apache.tuscany.sca.host.http; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URL; import java.net.URLDecoder; import javax.servlet.Servlet; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * A minimal implementation of a Servlet that serves documents in a document root * directory. * * A Servlet host implementation is not required to use this implementation and can map * the URI and document root to a more complete and more efficient implementation of * a resource Servlet, for example the Tomcat or Jetty default Servlets. * * @version $Rev$ $Date$ */ public class DefaultResourceServlet extends HttpServlet implements Servlet { private static final long serialVersionUID = 2865466417329430610L; private String documentRoot; /** * Constructs a new ResourceServlet * @param documentRoot the document root */ public DefaultResourceServlet(String documentRoot) { this.documentRoot = documentRoot; } /** * Returns the document root. * @return the document root */ public String getDocumentRoot() { return documentRoot; } @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // Determine the resource path String path = URLDecoder.decode(request.getRequestURI().substring(request.getServletPath().length()), "UTF-8"); if (path.startsWith("/")) { path = path.substring(1); } URL url = new URL(documentRoot + '/' + path); // Write the resource InputStream is = url.openStream(); OutputStream os = response.getOutputStream(); byte[] buffer = new byte[2048]; for (;;) { int n = is.read(buffer); if (n <= 0) break; os.write(buffer, 0, n); } } }