Java tutorial
/******************************************************************************* * The MIT License (MIT) * Copyright 2015 Inshua,inshua@gmail.com, All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and * associated documentation files (the Software?), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED AS IS?, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *******************************************************************************/ package org.siphon.d2js; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.nio.file.Path; import java.nio.file.WatchEvent; import java.util.HashMap; import java.util.Map; import javax.servlet.AsyncContext; import javax.servlet.RequestDispatcher; import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.commons.lang3.StringUtils; import org.apache.jasper.runtime.JspFactoryImpl; import org.apache.log4j.Logger; import org.siphon.common.io.WatchDir; import org.siphon.d2js.jshttp.D2jsInitParams; import org.siphon.d2js.jshttp.JsServlet; import org.siphon.d2js.jshttp.ServerUnitManager; /** * Servlet implementation class DispatchServlet */ // @WebServlet("*.d2js") @MultipartConfig public class DispatchServlet extends JsServlet { private static final long serialVersionUID = 1210851918238223449L; private static Logger logger = Logger.getLogger(DispatchServlet.class); public DispatchServlet() { super(); } @Override public void init() throws ServletException { super.init(); D2jsInitParams args = new D2jsInitParams(); args.setLibs(this.getJsLibs()); args.setApplication(JsServlet.application); args.setPreloadJs(this.getPreloadJs()); D2jsUnitManager d2jsUnitManager = new D2jsUnitManager(this.getServletContext()); d2jsUnitManager.init(args); //d2jsUnitManager.scanD2jsUnits(); D2jsRunner d2jsRunner = new D2jsRunner(d2jsUnitManager); // only init once this.getServletContext().setAttribute("d2jsRunner", d2jsRunner); } public D2jsRunner getD2jsRunner() { D2jsRunner d2jsRunner = (D2jsRunner) this.getServletContext().getAttribute("d2jsRunner"); return d2jsRunner; } @Override protected void onFileChanged(WatchEvent<Path> ev, Path file) { D2jsRunner d2jsRunner = (D2jsRunner) this.getServletContext().getAttribute("d2jsRunner"); if (d2jsRunner != null) { d2jsRunner.getUnitManager().onFileChanged(ev, file); } } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); request.setAttribute("org.apache.catalina.ASYNC_SUPPORTED", true); AsyncContext asyncContext = request.startAsync(request, response); D2jsRunner d2jsRunner = this.getD2jsRunner(); String method = StringUtils.defaultIfEmpty(request.getParameter("_m"), "fetch"); try { d2jsRunner.run((HttpServletRequest) asyncContext.getRequest(), (HttpServletResponse) asyncContext.getResponse(), method); } finally { asyncContext.complete(); } } @Override protected void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); request.setAttribute("org.apache.catalina.ASYNC_SUPPORTED", true); AsyncContext asyncContext = request.startAsync(request, response); D2jsRunner d2jsRunner = this.getD2jsRunner(); try { d2jsRunner.run((HttpServletRequest) asyncContext.getRequest(), (HttpServletResponse) asyncContext.getResponse(), "delete"); } finally { asyncContext.complete(); } } @Override protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); request.setAttribute("org.apache.catalina.ASYNC_SUPPORTED", true); AsyncContext asyncContext = request.startAsync(request, response); D2jsRunner d2jsRunner = this.getD2jsRunner(); try { d2jsRunner.run((HttpServletRequest) asyncContext.getRequest(), (HttpServletResponse) asyncContext.getResponse(), "modify"); } finally { asyncContext.complete(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); request.setAttribute("org.apache.catalina.ASYNC_SUPPORTED", true); AsyncContext asyncContext = request.startAsync(request, response); D2jsRunner d2jsRunner = this.getD2jsRunner(); String method = StringUtils.defaultIfEmpty(request.getParameter("_m"), "create"); try { d2jsRunner.run((HttpServletRequest) asyncContext.getRequest(), (HttpServletResponse) asyncContext.getResponse(), method); } finally { asyncContext.complete(); } } }