线程池实现socket服务端

启动类

public static void main(String[] args) {
    SpringApplication.run(ZSClientApplication.class, args);
    System.out.println("Client OK");
    try {
        ZSServerSocket zsServerSocket = new ZSServerSocket();
        System.out.println("Seriver OK");
        zsServerSocket.service();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

//socket服务类

public class ZSServerSocket {
　　　　

private ServerSocket serverSocket;

private ExecutorService executorService;// 线程池

private final int POOL_SIZE = 2;// 单个CPU线程池大小

private Socket socket;

public ZSServerSocket() throws IOException{

   serverSocket = new ServerSocket(port);
   executorService = Executors.newFixedThreadPool(Runtime.getRuntime()
         .availableProcessors()
         * POOL_SIZE);
   log.info("服务器启动:" + port);
}

public void service(){
   while (true) {
      try {
         // 接收客户连接,只要客户进行了连接,就会触发accept();从而建立连接
         socket = serverSocket.accept();
         executorService.execute(new Runnable() {
            @Override
            public void run() {
               //业务逻辑请求处理报文

DataInputStream din = null;
DataOutputStream dout = null;
try{
   dout = new DataOutputStream(socket
         .getOutputStream());
   din = new DataInputStream(socket.getInputStream());

   log.info("新连接" + socket.getInetAddress() + ":"
         + socket.getPort());

   byte []bLen = new byte[8];
   din.read(bLen);
   int len = Integer.valueOf(new String(bLen));
   log.info("接收报文长度：" + len);

   byte[] bContent = new byte[len];
   din.read(bContent);

   String msg = new String(bContent, "GBK");
   msg = msg.trim();
   String origData =getbody(msg,"body");
   origData.trim();
   log.info("原文：[" + origData + "]");
   String signedData = getbody(msg,"bz1");
   log.info("密文：[" + signedData + "]");
   //sm2国密验签与RSA验签均支持
   String deviceName = JCrypto.JSOFT_LIB;
   JCrypto.getInstance().initialize(deviceName, null);
   Session session = JCrypto.getInstance().openSession(deviceName);
   boolean result = SignVerUtils.verify(origData.getBytes(),signedData.getBytes(),session);
   log.info("验签结果："+result);
   if(!result){
      log.error("验签失败");
   }
   //解析报文
   SAXReader reader = new SAXReader();
   Document recDoc = reader.read((new ByteArrayInputStream(bContent)));
   Element recRootEmt = recDoc.getRootElement();
   Element recHeadEmt = recRootEmt.element("head");
   Element recBodyEmt = recRootEmt.element("body");
   String jym = recHeadEmt.element("jym").getText();

   if("1003".equals(jym)){
      //出入金文件名
      String crjwjm = recBodyEmt.element("crjwjm").getText();
      //交易文件名
      String jywjm = recBodyEmt.element("jywjm").getText();
      //账务日期
      String zwrq = recBodyEmt.element("zwrq").getText();
      //回单清单文件名
      String hdqdwjm = recBodyEmt.element("hdqdwjm").getText();

      //保存文件名，以供下载使用
      FlowFile flowFile = new FlowFile();
      flowFile.setCreatetime(new Date());
      flowFile.setUpdatetime(new Date());
      flowFile.setCrjwj(crjwjm);
      flowFile.setJywj(jywjm);
      flowFile.setZwrq(zwrq);
      flowFile.setHdqdwj(hdqdwjm);
      zsDao.save(flowFile);

      //返回报文
      Request request = new Request();
      Head head = new Head();
      Body body = new Body();
      SimpleDateFormat Jyrq = new SimpleDateFormat("yyyyMMdd");
      SimpleDateFormat Jysj = new SimpleDateFormat("HHmmss");
      head.setJym(jym);
      head.setSclsh(thirdLogNo2());
      head.setScbh(scbh);
      head.setFhm("000000");
      head.setBz1("");
      head.setJyrq(Jyrq.format(new Date()));
      head.setJysj(Jysj.format(new Date()));
      request.setHead(head);
      request.setBody(body);

      XStream xs = new XStream();
      xs.alias("request",Request.class);
      xs.alias("head",Head.class);
      xs.alias("body",Body.class);
      String requestXml = XML_HEAD_GBK + xs.toXML(request);
      Document doc = reader.read(new ByteArrayInputStream(requestXml.getBytes()));
      String rmsg = "";
      rmsg = doc.asXML();
      rmsg = rmsg.trim();

      int retLen = rmsg.length();
      String sRetLen = (String.valueOf(100000000+retLen)).substring(1, 9);
      log.info("返回信息长度：" + sRetLen);
      log.info("返回信息："+ requestXml);
      byte[] bRetlen = sRetLen.getBytes();
      byte[] bRetStr = rmsg.getBytes("GBK");
      dout.write(bRetlen);
      dout.write(bRetStr);
   }

            }
         });
      } catch (Exception e) {
         log.error("线程内部错误", e);
      }
   }
}

}