java socket tcp通讯，多个客户端连接服务器简单例子详解编程语言

try{ DataInputStream dis = new DataInputStream(s.getInputStream());//服务器通过输入管道接收数据流 String str; while((str = dis.readUTF()).length() 0){ System.err.println(str);//输出读入的数据 catch(Exception ex){ ex.printStackTrace(); }

客户端

import java.awt.EventQueue; 

import javax.swing.JFrame; 

import javax.swing.JPanel; 

import javax.swing.border.EmptyBorder; 

import javax.swing.JButton; 

import java.awt.event.ActionListener; 

import java.awt.event.ActionEvent; 

import java.io.DataOutputStream; 

import java.io.OutputStream; 

import java.net.Socket; 

import javax.swing.JTextField; 

public class TCPClientFrame extends JFrame { 

 Socket s; 

 DataOutputStream dos; 

 private JPanel contentPane; 

 private JTextField textField; 

 private JButton button; 

 /** 

 * Launch the application. 

 public static void main(String[] args) { 

 EventQueue.invokeLater(new Runnable() { 

 public void run() { 

 try { 

 TCPClientFrame frame = new TCPClientFrame(); 

 frame.setVisible(true); 

 } catch (Exception e) { 

 e.printStackTrace(); 

 }); 

 /** 

 * Create the frame. 

 public TCPClientFrame() { 

 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

 setBounds(100, 100, 450, 300); 

 contentPane = new JPanel(); 

 contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); 

 setContentPane(contentPane); 

 contentPane.setLayout(null); 

 JButton btnNewButton = new JButton("连接"); 

 btnNewButton.addActionListener(new ActionListener() { 

 public void actionPerformed(ActionEvent e) { 

 try{ 

 s = new Socket("127.0.0.1", 6666); 

 OutputStream os = s.getOutputStream(); //得到输出管道 

 dos = new DataOutputStream(os);//创建数据传输流 

 catch(Exception ex){ 

 ex.printStackTrace(); 

 }); 

 btnNewButton.setBounds(10, 10, 93, 23); 

 contentPane.add(btnNewButton); 

 JButton btnNewButton_1 = new JButton("发消息"); 

 btnNewButton_1.addActionListener(new ActionListener() { 

 public void actionPerformed(ActionEvent e) { 

 try{ 

 dos.writeUTF(textField.getText());//客户端传输数据 

 dos.flush(); 

 catch(Exception ex){ 

 ex.printStackTrace(); 

 }); 

 btnNewButton_1.setBounds(141, 10, 93, 23); 

 contentPane.add(btnNewButton_1); 

 textField = new JTextField(); 

 textField.setBounds(10, 56, 66, 21); 

 contentPane.add(textField); 

 textField.setColumns(10); 

 button = new JButton("自动发消息"); 

 button.addActionListener(new ActionListener() { 

 public void actionPerformed(ActionEvent e) { 

 try{ 

 while(true){ 

 dos.writeUTF("======自动发的消息");//客户端传输数据 

 dos.flush(); 

 catch(Exception ex){ 

 ex.printStackTrace(); 

 }); 

 button.setBounds(314, 10, 93, 23); 

 contentPane.add(button); 

}

原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/10584.html

cjava