Java tutorial
/* * 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 yp.tibco.com.yang.lottery.server; import org.apache.commons.betwixt.io.BeanReader; import org.apache.mina.core.service.IoHandlerAdapter; import org.apache.mina.core.session.IoSession; import org.apache.mina.example.imagine.step1.ImageRequest; import org.apache.mina.example.imagine.step1.ImageResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.xml.sax.SAXException; import yp.tibco.com.yang.lottery.json.bean.GetParameterBean; import yp.tibco.com.yang.lottery.json.bean.GetParameterBeanBody; import yp.tibco.com.yang.lottery.message.LotteryRequest; import yp.tibco.com.yang.lottery.message.LotteryResponse; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.beans.IntrospectionException; import java.io.IOException; import java.io.StringReader; /** * server-side {@link org.apache.mina.core.service.IoHandler} * * @author <a href="http://mina.apache.org">Apache MINA Project</a> */ public class LotteryServerIoHandler extends IoHandlerAdapter { private final static String characters = "mina rocks abcdefghijklmnopqrstuvwxyz0123456789"; public static final String INDEX_KEY = LotteryServerIoHandler.class.getName() + ".INDEX"; private static Logger LOGGER = LoggerFactory.getLogger(LotteryServerIoHandler.class); /** * Called when the session is opened, which will come after the session created. * * @see org.apache.mina.core.service.IoHandlerAdapter#sessionOpened(org.apache.mina.core.session.IoSession) */ public void sessionOpened(IoSession session) throws Exception { session.setAttribute(INDEX_KEY, 0); } /** * This method will be called whenever an exception occurs. For this handler, * the logger will generate a warning message. * * @see org.apache.mina.core.service.IoHandlerAdapter#exceptionCaught(org.apache.mina.core.session.IoSession, java.lang.Throwable) */ public void exceptionCaught(IoSession session, Throwable cause) throws Exception { LOGGER.warn(cause.getMessage(), cause); } /** * Handle incoming messages. * * @see org.apache.mina.core.service.IoHandlerAdapter#messageReceived(org.apache.mina.core.session.IoSession, java.lang.Object) */ public void messageReceived(IoSession session, Object message) throws Exception { // ImageRequest request = (ImageRequest) message; // String text1 = generateString(session, request.getNumberOfCharacters()); // String text2 = generateString(session, request.getNumberOfCharacters()); // BufferedImage image1 = createImage(request, text1); // BufferedImage image2 = createImage(request, text2); // ImageResponse response = new ImageResponse(image1, image2); // session.write(response); LotteryRequest request = (LotteryRequest) message; if (request.getTransType() == 0) { return; } String rt = "\n"; String nb = " "; System.out.print("request is =" + rt + nb + "TransType : " + request.getTransType() + ", " + rt + nb + "FromID : " + request.getFromID() + ", " + rt + nb + "MessageLength : " + request.getMessageLength() + ", " + rt + nb + "Status : " + request.getStatus() + ", " + rt + nb + "SequenceNumber : " + request.getSequenceNumber() + ", " + rt + nb + "Message content : " + rt + request.getXmlStr() + rt); String respContent = "<?xml version=\'1.0\' encoding=\'gb2312\' ?><webinf><GameName>B001</GameName><SaleName>shuangseqiu</SaleName><GameType>2</GameType><GameId>2</GameId><BetPerTick>5</BetPerTick><SpecialNum>1</SpecialNum><NumPerBet>7</NumPerBet><MultiDraw>0</MultiDraw><MultiFlag>50</MultiFlag><SalePerm>3</SalePerm><MoneyPerBet>200</MoneyPerBet><ShowDraw>2014029</ShowDraw><StartTime>20140317073000</StartTime><EndTime>20140318200000</EndTime><MinDan>1</MinDan><MaxDan>5</MaxDan><MinTuo>2</MinTuo><MaxTuo>32</MaxTuo><CmaxNum>33</CmaxNum><CminNum>1</CminNum><CSpMaxNum>16</CSpMaxNum><CSpMinNum>1</CSpMinNum></webinf>"; System.out.println("----------------->" + request.getXmlStr()); GetParameterBeanBody requestBean = (GetParameterBeanBody) xmlString2Object(request.getXmlStr(), "webinf", GetParameterBeanBody.class); LotteryResponse response = new LotteryResponse(); response.setTransType(request.getTransType()); response.setFromID(request.getFromID()); response.setMessageLength((short) (respContent.getBytes().length)); response.setStatus(22); response.setSequenceNumber(request.getSequenceNumber()); response.setXmlStr(respContent); Thread.sleep(1000); session.write(response); } public Object xmlString2Object(String xmlString, String className, Class cl) { StringReader xmlReader = new StringReader(xmlString); BeanReader beanReader = new BeanReader(); beanReader.getXMLIntrospector().setAttributesForPrimitives(false); try { //beanReader.registerBeanClass("SelectUserIDListBean", SelectUserIDListBean.class); beanReader.registerBeanClass(className, cl); } catch (IntrospectionException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } // XMLJava Object Object obj = null; try { obj = beanReader.parse(xmlReader); } catch (IOException e) { e.printStackTrace(); } catch (SAXException e) { e.printStackTrace(); } return obj; } /** * Create an image using the specified request and the text. * * @param request * Determines the height and width of the image * @param text * The text that is placed in the image * @return * a BufferedImage representing the text. */ private BufferedImage createImage(ImageRequest request, String text) { BufferedImage image = new BufferedImage(request.getWidth(), request.getHeight(), BufferedImage.TYPE_BYTE_INDEXED); Graphics graphics = image.createGraphics(); graphics.setColor(Color.YELLOW); graphics.fillRect(0, 0, image.getWidth(), image.getHeight()); Font serif = new Font("serif", Font.PLAIN, 30); graphics.setFont(serif); graphics.setColor(Color.BLUE); graphics.drawString(text, 10, 50); return image; } /** * Generate a string based on the 'characters' field in this class. The * characters that make up the string are based on the session * attribute "INDEX_KEY" * * @param session * The {@link IoSession} object that will provide the INDEX_KEY attribute * @param length * The length that the String will be * @return * The generated String */ private String generateString(IoSession session, int length) { Integer index = (Integer) session.getAttribute(INDEX_KEY); StringBuffer buffer = new StringBuffer(length); while (buffer.length() < length) { buffer.append(characters.charAt(index)); index++; if (index >= characters.length()) { index = 0; } } session.setAttribute(INDEX_KEY, index); return buffer.toString(); } }