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淺談java的TCP和UDP編程(附實(shí)例講解)

更新時(shí)間：2017年05月30日 08:31:01 投稿：jingxian

下面小編就為大家?guī)硪黄獪\談java的TCP和UDP編程(附實(shí)例講解)。小編覺得挺不錯(cuò)的，現(xiàn)在就分享給大家，也給大家做個(gè)參考。一起跟隨小編過來看看吧

TCP

客戶端：

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;
    // 請(qǐng)求指定ip和端口號(hào)的服務(wù)器
    socket = new Socket("127.0.0.1",3333);
    
    while(true){

      in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
      
      out = new PrintWriter(socket.getOutputStream(), true);
      // 接收控制臺(tái)的輸入
      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("客戶端顯示--》服務(wù)器的信息：" + str);
    }
    //in.close();
    //out.close();
  }

}

服務(wù)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;
    
    // 監(jiān)聽3333端口
    ss = new ServerSocket(3333);
    // 等待接收客戶端的請(qǐng)求
    socket = ss.accept();
    while(true){
      // 獲取連接對(duì)象的輸入流
      in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
      // 獲取客戶端的輸入信息
      String str = in.readLine();
      
      input = new BufferedReader(new InputStreamReader(System.in));
      
      System.out.println("服務(wù)器顯示-->客戶端輸入數(shù)據(jù)：" + str);
      
      out = new PrintWriter(socket.getOutputStream(),true);
      // 將數(shù)據(jù)輸出到客戶端
      // out.println("hehe");
      String info = input.readLine();
      
      out.println(info);
    }
//    in.close();
//    out.flush();
//    out.close();
  }

}

UDP

客戶端：

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);
    
    // 接收數(shù)據(jù)，放入數(shù)據(jù)報(bào)
    ds.receive(dp);
    // 從數(shù)據(jù)報(bào)中取出數(shù)據(jù)
    String info = new String(dp.getData(),0, dp.getLength());
    System.out.println("接收到的信息是：" + info);
  }

}

服務(wù)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;
    
    // 構(gòu)建發(fā)送對(duì)象
    ds = new DatagramSocket();
    // 將數(shù)據(jù)打包-->打成數(shù)據(jù)報(bào)
    String info = "hello world!";
    
    dp = new DatagramPacket(info.getBytes(), info.length(), InetAddress.getByName("localhost"),3333);
    
    // 發(fā)出數(shù)據(jù)報(bào)
    ds.send(dp);
    
  }

}

以上這篇淺談java的TCP和UDP編程(附實(shí)例講解)就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

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