Java tutorial
/* * JBoss, Home of Professional Open Source * Copyright 2012, Red Hat, Inc. and/or its affiliates, and individual * contributors by the @authors tag. See the copyright.txt in the * distribution for a full listing of individual contributors. * * 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. */ import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.text.DateFormat; import java.text.ParseException; import java.util.Date; import java.util.logging.Logger; import javax.inject.Inject; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.dom4j.Document; import org.dom4j.DocumentException; import org.dom4j.io.SAXReader; /** * <p> * A simple servlet taking advantage of features added in 3.0. * </p> * * <p> * The servlet is registered and mapped to /HelloServlet using the {@linkplain WebServlet * @HttpServlet}. The {@link HelloService} is injected by CDI. * </p> * * @author Pete Muir * */ @SuppressWarnings("serial") @WebServlet("/qutiqiu") public class HelloWorldServlet extends HttpServlet { static String PAGE_HEADER = "<html><head /><body>"; static String PAGE_FOOTER = "</body></html>"; private static final String RESPONSE_TXT = "<xml>" + "<ToUserName><![CDATA[%s]]></ToUserName>" + "<FromUserName><![CDATA[%s]]></FromUserName>" + "<CreateTime>%s</CreateTime>" + "<MsgType><![CDATA[%s]]></MsgType>" + "<Content><![CDATA[%s]]></Content>" + "<FuncFlag>0</FuncFlag>" + "</xml>"; @Inject HelloService helloService; private Logger log = Logger.getLogger(HelloWorldServlet.class.getName()); @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String del = (String) req.getParameter("del"); if (del != null && del.equals("yes")) { log.info("remove file"); MatchUtil.removeFile(); } String time = (String) req.getParameter("time"); if (time == null) { time = DateFormat.getDateInstance().format(new Date()); } log.info("time is " + time); if (MatchUtil.isFileExist()) { Match match = MatchUtil.readMatch(); try { match.setTime(DateFormat.getDateInstance().parse(time)); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } match.setMatchCount((match.getMatchCount()) + 1); MatchUtil.writeMatch(match); } else { Match match = new Match(); try { match.setTime(DateFormat.getDateInstance().parse(time)); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } match.setMatchCount((match.getMatchCount()) + 1); MatchUtil.writeMatch(match); } log.info((MatchUtil.readMatch()).toString()); String s = (String) req.getParameter("echostr"); PrintWriter writer = resp.getWriter(); writer.print(s); writer.close(); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("UTF-8"); resp.setCharacterEncoding("UTF-8"); PrintWriter out = resp.getWriter(); Document doc = null; SAXReader reader = new SAXReader(); InputStream in = req.getInputStream(); try { doc = reader.read(in); Metadata question = new Metadata(doc); String answer = MessageProcessor.process(question); log.info("==============" + answer); out.printf(RESPONSE_TXT, question.getFromUserName(), question.getToUserName(), System.currentTimeMillis(), "text", answer); } catch (DocumentException e) { e.printStackTrace(); } in.close(); in = null; out.close(); out = null; } }