java 实现socket基于TCP的多线程多机交互

来源：互联网发布：数据库访问接口 xml 编辑：程序博客网时间：2024/06/09 14:14

服务器，使用ServerSocket监听指定的端口，端口可以随意指定（由于1024以下的端口通常属于保留端口，在一些操作系统中不可以随意使用，所以建议使用大于1024的端口），等待客户连接请求，客户连接后，会话产生；在完成会话后，关闭连接。

客户端，使用Java socket通信对网络上某一个服务器的某一个端口发出连接请求，一旦连接成功，打开会话；会话完成后，关闭Socket。客户端不需要指定打开的端口，通常临时的、动态的分配一个1024以上的端口。

首先是服务器端的代码：由于是实现多机交互所以服务器端接收链接就需要where（true）接收到链接就调用addclient（）方法接收此客户端的名字并创建一个线程保持此客户端的通讯，并且将此客户端放到定义的List<Client>数组中，然后再客户端处理线程类中接收当前客户端的信息，并通过if (c!=this) 判断（this表示发信息的客户端，）将信息发给其他客户端；

源代码已上传我的资源页 http://download.csdn.net/detail/u012373815/8953819

服务器代码如下：

package org.server;

import java.net.*;

import java.util.ArrayList;

import java.util.List;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.io.*;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

* authoryang 2015 7 6

publicclassTCPServerextends JFrame{

publicstatic JTextAreacenterTextArea=new JTextArea();

private JPanelsouthPanel,bottompanel;

public List<Client>list =newArrayList<Client>();

Stringname1;

publicvoid setui()throws Exception {

ServerSocket ss = new ServerSocket(5678);//创建一个Socket服务器，监听5566端口

//TODO Auto-generated constructor stub

setTitle("服务器");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setSize(400,400);

setResizable(false); //窗口大小不可调整

setLocationRelativeTo(null);//窗口剧中

//窗口的center部分

centerTextArea.setEditable(false);

centerTextArea.setBackground(new Color(211, 211, 211));

//窗口的SHOTU部分

southPanel =new JPanel(new BorderLayout());

bottompanel=new JPanel(new FlowLayout(FlowLayout.CENTER,5,5));

southPanel.add(bottompanel,BorderLayout.SOUTH);

add(new JScrollPane(centerTextArea),BorderLayout.CENTER);

add(southPanel,BorderLayout.SOUTH);

setVisible(true);

while(true){

Socket s = ss.accept();//利用Socket服务器的accept()方法获取客户端Socket对象。

addclient(s);

System.out.println(list.size());

}

//添加客户端

private void addclient(Socket s){

try{

BufferedReader in = new BufferedReader(new InputStreamReader(

s.getInputStream()));

name1=in.readLine();

}catch(IOException e) {

//TODO Auto-generated catch block

e.printStackTrace();

}

Client c = new Client(name1,s);//创建客户端处理线程对象

list.add(c);

Thread t =newThread(c);//创建客户端处理线程

t.start();//启动线程

}

//客户端处理线程类(实现Runnable接口)

class Clientimplements Runnable {

String name;//客户端名字

Socket s = null;//保存客户端Socket对象

BufferedReader in;

PrintWriter out;

Client(String name,Socket s){

this.s = s;

this.name=name;

try{

in =new BufferedReader(new InputStreamReader(

s.getInputStream()));

out =newPrintWriter(s.getOutputStream());

centerTextArea.append("客户端"+name+"连接成功\n");

centerTextArea.setCaretPosition(centerTextArea.getText().length());

}catch(IOException e) {

//TODO Auto-generated catch block

e.printStackTrace();

}

publicvoidrun(){

try {

while (true) {

Stringstr = in.readLine();

for(int j=0;j<list.size();j++){

Client c = list.get(j);

if (c!=this) {

System.out.println(str);

c.send(str);

}

centerTextArea.append(name+"发出消息："+str+"\n");

centerTextArea.setCaretPosition(centerTextArea.getText().length());

if (str.equals("end"))

break;

}

try {

s.close();

}catch(IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}catch(IOException e1) {

// TODO Auto-generated catch block

e1.printStackTrace();

}

publicvoid send(String str) {

out.println("客户端 "+name+"说："+str);

out.flush();

}

publicstaticvoidmain(String[] args)throws Exception{

//利用死循环不停的监听端口

TCPServer tc=new TCPServer();

tc.setui();

}

客户端比较简单只需开线程持续接收服务器信息即可 receive.start();

客户端代码如下：

package org.server;

import java.net.*;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.*;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;

public classTCPClient extends JFrame {

private JLabelstateLB;

private JTextAreacenterTextArea ,inputTextArea;

private JPanelsouthPanel,bottompanel;

private JTextFieldipTextField,remotePortTF;

private JButtonsendBT,clearBT;

static Socketserver;

Stringname=null ;

PrintWriterout;

BufferedReaderin ;

Thread receive=new Thread( new receiveThread());

public TCPClient()throws Exception{

//此处向服务器发送请求

server = newSocket(InetAddress.getLocalHost(), 5678);

in = newBufferedReader(newInputStreamReader(server.getInputStream()));

out = newPrintWriter(server.getOutputStream());

//建立接收

receive.start();

}

public void setUpUI(){//初始化面板

setTitle("客户端");

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setSize(400,400);

setResizable(false); //窗口大小不可调整

setLocationRelativeTo(null);//窗口剧中

stateLB =new JLabel("未链接");

stateLB.setHorizontalAlignment(JLabel.RIGHT);

//窗口的center部分

centerTextArea=new JTextArea();

centerTextArea.setEditable(false);

centerTextArea.setBackground(new Color(211, 211, 211));

//窗口的SHOTU部分

southPanel =new JPanel(new BorderLayout());

inputTextArea=new JTextArea(5,20);

bottompanel=new JPanel(new FlowLayout(FlowLayout.CENTER,5,5));

ipTextField=new JTextField("127.0.0.1",8);

sendBT=new JButton("发送");

clearBT=new JButton("清屏");

bottompanel.add(ipTextField);

bottompanel.add(sendBT);

bottompanel.add(clearBT);

southPanel.add(new JScrollPane(inputTextArea),BorderLayout.CENTER);

southPanel.add(bottompanel,BorderLayout.SOUTH);

add(stateLB,BorderLayout.NORTH);

add(new JScrollPane(centerTextArea),BorderLayout.CENTER);

add(southPanel,BorderLayout.SOUTH);

setVisible(true);

name=JOptionPane.showInputDialog(this,"请输入客户端的名字",JOptionPane.QUESTION_MESSAGE);

setTitle(name);

out.println(name);

out.flush();

stateLB.setText(name+"已链接");

}

public void setListener(){//发送消息

sendBT.addActionListener(new ActionListener() {

@Override

public voidactionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

Stringsendcontent=inputTextArea.getText();

centerTextArea.append(inputTextArea.getText()+"\n");

centerTextArea.setCaretPosition(centerTextArea.getText().length());

inputTextArea.setText("");

try {

out.println(sendcontent);

out.flush();

if (sendcontent.equals("end")) {

server.close();

}

}catch(Exception e2) {

// TODO: handle exception

JOptionPane.showMessageDialog(TCPClient.this,"出错了发送不成功");

e2.printStackTrace();

}

clearBT.addActionListener(new ActionListener() {

@Override

public voidactionPerformed(ActionEvent e) {

centerTextArea.setText("");//清空面板聊天记录

}

});

}

});

}

class receiveThreadimplements Runnable{

//接收线程

@Override

public void run() {

// TODO Auto-generated method stub

try {

while(server!=null)

{

Stringinfo =in.readLine();

centerTextArea.append(info+"\n");

centerTextArea.setCaretPosition(centerTextArea.getText().length());

}

}catch(Exception e) {

// TODO: handle exception

}

public static void main(String[] args)throws Exception {

TCPClientc=newTCPClient();

c.setUpUI();

c.setListener();

}

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