JAVA TCP协议的发送接收

最新推荐文章于 2024-08-22 16:45:55 发布

qfll_1981

最新推荐文章于 2024-08-22 16:45:55 发布

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CC 4.0 BY-SA版权

文章标签： tcp java exception buffer socket import

本文链接：https://blog.youkuaiyun.com/qfll_1981/article/details/1790735

本文介绍了一个简单的TCP通信示例，包括服务器端监听指定端口接收客户端发送的数据，并将接收到的XML格式数据打印出来；客户端则发送包含XML数据的字符串到指定服务器。

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import java.net.*;
import java.io.*;
import java.util.*;

public class Tcp{

public void receiver(int port)
    {
  ServerSocket serveSocket = null;
  Socket clientSocket = null;
  BufferedInputStream input = null;
  byte[] buffer = new byte[1024];                                                    //平台生成的XML串
        ByteArrayOutputStream streamXML = new ByteArrayOutputStream();                    //请求数据存放对象

  try{
   serveSocket = new ServerSocket(port);                                           //在指定端口建立一个连接
   System.out.println("开始监听:");
   while (true){
    clientSocket = serveSocket.accept();                                         //收到一个信息,得到一个clientSocket
    InputStream inputStream = clientSocket.getInputStream();                     //数据缓冲区
             int count = 0;                                                            //每个缓冲区的实际数据长度
       try {
        input = new BufferedInputStream(inputStream);
        while ((count = input.read(buffer)) != -1){
         streamXML.write(buffer, 0, count);
        }
       }catch (Exception e){
        e.printStackTrace();
       }finally{
        if (input != null){
         try {
          input.close();
         }catch (Exception f){
          f.printStackTrace();
         }
        }
       }

       System.out.println("收到如下信息: " + streamXML.toString());
       streamXML.reset();
       inputStream.close();
    clientSocket.close();
   }
  }catch (Exception e){
   e.printStackTrace();
  }
    }

public void send(String host,int port){

  byte[] buffer = new byte[1024];
  try{
  Socket socket = new Socket("192.168.61.146",20000);
  OutputStream outputStream = socket.getOutputStream();
  buffer = ("<package><head><requesttype>001</requesttype><user>PICC</user><code>12345678</code></head>"
      + "<body><policyno>00PICC1234567890</policyno><startdate>20070101</startdate><insured>zhangsan</insured></body>"
      + "<third><driverlist>"
      + "<driver><name>li1</name><age>20</age></driver>"
      + "</driverlist><date>19990909</date></third></package>").getBytes();
        outputStream.write(buffer);
        outputStream.flush();
        outputStream.close();
        socket.close();
  }catch (Exception e){
   e.printStackTrace();
  }
}

public static void main(String[] args) throws Exception {
  Tcp tcp = new Tcp();
  tcp.receiver(20000);
  //tcp.send("",20000);
}
}