欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

浅谈java的TCP和UDP编程(附实例讲解)

程序员文章站 2023-12-20 19:20:16
tcp 客户端:   import java.io.bufferedreader; import java.io.inputstreamreade...

tcp

客户端:

 

import java.io.bufferedreader;
import java.io.inputstreamreader;
import java.io.printwriter;
import java.net.socket;

public class myclient {

  public static void main(string[] args) throws exception{
    
    socket socket = null;
    bufferedreader in = null;
    printwriter out = null;
    
    bufferedreader input = null;
    // 请求指定ip和端口号的服务器
    socket = new socket("127.0.0.1",3333);
    
    while(true){

      in = new bufferedreader(new inputstreamreader(socket.getinputstream()));
      
      out = new printwriter(socket.getoutputstream(), true);
      // 接收控制台的输入
      input = new bufferedreader(new inputstreamreader(system.in));
      // out.println("this is client info!");
      string info = input.readline();
      
      out.println(info);
      
      string str = in.readline();
      
      system.out.println("客户端显示--》服务器的信息:" + str);
    }
    //in.close();
    //out.close();
  }

}

 服务端:

import java.io.bufferedreader;
import java.io.inputstreamreader;
import java.io.printwriter;
import java.net.serversocket;
import java.net.socket;

public class myservices {

  public static void main(string[] args) throws exception{
    serversocket ss = null;
    socket socket = null;
    bufferedreader in = null;
    printwriter out = null;
    bufferedreader input = null;
    
    // 监听3333端口
    ss = new serversocket(3333);
    // 等待接收客户端的请求
    socket = ss.accept();
    while(true){
      // 获取连接对象的输入流
      in = new bufferedreader(new inputstreamreader(socket.getinputstream()));
      // 获取客户端的输入信息
      string str = in.readline();
      
      input = new bufferedreader(new inputstreamreader(system.in));
      
      system.out.println("服务器显示-->客户端输入数据:" + str);
      
      out = new printwriter(socket.getoutputstream(),true);
      // 将数据输出到客户端
      // out.println("hehe");
      string info = input.readline();
      
      out.println(info);
    }
//    in.close();
//    out.flush();
//    out.close();
  }

}

udp

客户端:

import java.net.datagrampacket;
import java.net.datagramsocket;

public class udpclient {

  public static void main(string[] args) throws exception {
    
    datagramsocket ds = null;
    datagrampacket dp = null;
    byte[] buf = new byte[1024];
    
    ds = new datagramsocket(3333);
    dp = new datagrampacket(buf, 1024);
    
    // 接收数据,放入数据报
    ds.receive(dp);
    // 从数据报中取出数据
    string info = new string(dp.getdata(),0, dp.getlength());
    system.out.println("接收到的信息是:" + info);
  }

}

服务端:

import java.net.datagrampacket;
import java.net.datagramsocket;
import java.net.inetaddress;

public class udpserver {

  public static void main(string[] args) throws exception {
    datagramsocket ds = null;
    datagrampacket dp = null;
    
    // 构建发送对象
    ds = new datagramsocket();
    // 将数据打包-->打成数据报
    string info = "hello world!";
    
    dp = new datagrampacket(info.getbytes(), info.length(), inetaddress.getbyname("localhost"),3333);
    
    // 发出数据报
    ds.send(dp);
    
  }

}

以上这篇浅谈java的tcp和udp编程(附实例讲解)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

上一篇:

下一篇: