| /* |
| * 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.cocoon.components.jsp; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.Servlet; |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.avalon.framework.logger.AbstractLogEnabled; |
| import org.apache.avalon.framework.parameters.Parameterizable; |
| import org.apache.avalon.framework.parameters.Parameters; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| |
| /** |
| * Allows Servlets and JSPs to be used as a generator. |
| * |
| * @author <a href="mailto:dims@yahoo.com">Davanum Srinivas</a> |
| * @version CVS $Id$ |
| */ |
| public class JSPEngineImpl extends AbstractLogEnabled |
| implements JSPEngine, Parameterizable, ThreadSafe { |
| |
| /** The Default Servlet Class Name for Tomcat 3.X and 4.X */ |
| public static final String DEFAULT_SERVLET_CLASS = "org.apache.jasper.servlet.JspServlet"; |
| |
| /** Servlet Class Name */ |
| public String jspServletClass = DEFAULT_SERVLET_CLASS; |
| |
| /** |
| * @param params The configuration parameters |
| */ |
| public void parameterize(Parameters params) { |
| this.jspServletClass = params.getParameter("servlet-class", DEFAULT_SERVLET_CLASS); |
| } |
| |
| /** |
| * Execute the Servlet/JSP and return the output in UTF8 encoding. |
| */ |
| public byte[] executeJSP(String url, |
| HttpServletRequest servletRequest, |
| HttpServletResponse servletResponse, |
| ServletContext context) |
| throws IOException, ServletException, Exception { |
| |
| JSPEngineServletOutputStream output = new JSPEngineServletOutputStream(); |
| JSPEngineServletRequest request = new JSPEngineServletRequest(servletRequest, url); |
| JSPEngineServletResponse response = new JSPEngineServletResponse(servletResponse,output); |
| |
| byte[] bytes = null; |
| |
| // start the servlet |
| Class clazz = Thread.currentThread().getContextClassLoader().loadClass(this.jspServletClass); |
| Servlet servlet = (Servlet) clazz.newInstance(); |
| servlet.init(new JSPEngineServletConfig(context,"JSPEngineImpl")); |
| |
| try { |
| servlet.service(request, response); |
| bytes = output.toByteArray(); |
| } finally { |
| // clean up |
| servlet.destroy(); |
| } |
| |
| return bytes; |
| } |
| } |