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jforum example source code file (InstallServlet.java)

This example jforum source code file (InstallServlet.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 - jforum tags/keywords

bufferedwriter, bufferedwriter, http, httpservletresponse, i18n, installservlet, io, ioexception, jforumcontext, jforumcontext, request, requestcontext, response, servlet, servletexception, servletexception, string, string, template

The jforum InstallServlet.java source code

/*
 * Copyright (c) JForum Team
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * This file creation date: 27/08/2004 - 18:12:26
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;

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

import net.jforum.context.JForumContext;
import net.jforum.context.RequestContext;
import net.jforum.context.ResponseContext;
import net.jforum.context.ForumContext;
import net.jforum.context.web.WebRequestContext;
import net.jforum.context.web.WebResponseContext;
import net.jforum.exceptions.ExceptionWriter;
import net.jforum.repository.ModulesRepository;
import net.jforum.util.I18n;
import net.jforum.util.preferences.ConfigKeys;
import net.jforum.util.preferences.SystemGlobals;
import freemarker.template.SimpleHash;
import freemarker.template.Template;

/**
 * @author Rafael Steil
 * @version $Id: InstallServlet.java,v 1.30 2007/10/10 04:54:20 rafaelsteil Exp $
 */
public class InstallServlet extends JForumBaseServlet
{
	/** 
	 * @see javax.servlet.GenericServlet#init(javax.servlet.ServletConfig)
	 */
	public void init(ServletConfig config) throws ServletException
	{
		super.init(config);
	}
	
	/** 
	 * @see javax.servlet.http.HttpServlet#service(javax.servlet.ServletRequest, javax.servlet.ServletResponse)
	 */
	public void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
	{
		try {
			String encoding = SystemGlobals.getValue(ConfigKeys.ENCODING);
			req.setCharacterEncoding(encoding);
			
			// Request
			RequestContext request = new WebRequestContext(req);
			ResponseContext response = new WebResponseContext(res);

			request.setCharacterEncoding(encoding);

            JForumExecutionContext ex = JForumExecutionContext.get();

            ForumContext forumContext = new JForumContext(
                request.getContextPath(),
                SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION),
                request,
                response,
                false
            );

            ex.setForumContext(forumContext);
	
			// Assigns the information to user's thread 
			JForumExecutionContext.set(ex);
			
			// Context
			SimpleHash context = JForumExecutionContext.getTemplateContext();
			context.put("contextPath", req.getContextPath());
			context.put("serverName", req.getServerName());
			context.put("templateName", "default");
			context.put("serverPort", Integer.toString(req.getServerPort()));
			context.put("I18n", I18n.getInstance());
			context.put("encoding", encoding);
			context.put("extension", SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION));
			context.put("JForumContext", forumContext);
			context.put("version", SystemGlobals.getValue(ConfigKeys.VERSION));
			
			if (SystemGlobals.getBoolValue(ConfigKeys.INSTALLED)) {
				JForumExecutionContext.setRedirect(request.getContextPath() 
					+ "/forums/list" + SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION));
			}
			else {		
				// Module and Action
				String moduleClass = ModulesRepository.getModuleClass(request.getModule());
				
				context.put("moduleName", request.getModule());
				context.put("action", request.getAction());
				
				BufferedWriter out = new BufferedWriter(new OutputStreamWriter(response.getOutputStream(), encoding));
				
				try {
					if (moduleClass != null) {
						// Here we go, baby
						Command c = (Command)Class.forName(moduleClass).newInstance();
						Template template = c.process(request, response, context);
			
						if (JForumExecutionContext.getRedirectTo() == null) {
							response.setContentType("text/html; charset=" + encoding);
			
							template.process(context, out);
							out.flush();
						}
					}
				}
				catch (Exception e) {
					response.setContentType("text/html; charset=" + encoding);
					if (out != null) {
						new ExceptionWriter().handleExceptionData(e, out, request);
					}
					else {
						new ExceptionWriter().handleExceptionData(e, 
							new BufferedWriter(new OutputStreamWriter(response.getOutputStream())), request);
					}
				}
			}
			
			String redirectTo = JForumExecutionContext.getRedirectTo();
			
			if (redirectTo != null) {
				response.sendRedirect(response.encodeRedirectURL(redirectTo));
			}
		}
		finally {
			JForumExecutionContext.finish();
		}
	}
}

Other jforum examples (source code examples)

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