java socket的简单使用实例

来源：互联网发布：淘宝onlyanna罗晓颖编辑：程序博客网时间：2024/06/14 18:29

共有两个文件，服务器端Server 和客户端Client

//Server1代码如下：

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

public class Server1 implements Runnable
{
    ServerSocket server=null;
    Socket clientSocket;
    boolean flag=true;           //是否结束的标记
    Thread c;              //向客户端发送信息的线程
    BufferedReader sin;
    DataOutputStream sout;

    public static void main(String args[])
    {

        new Server1().ServerStart();
    }
    public void ServerStart()
    {
        try
        {
            server=new ServerSocket(5678);
            System.out.println("端口号:"+server.getLocalPort());
            while(flag)
            {
                clientSocket=server.accept();
                System.out.println("已经建立连接。");
                InputStream is=clientSocket.getInputStream();
sin= new BufferedReader(new InputStreamReader(is));
                OutputStream os=clientSocket.getOutputStream();
                sout=new DataOutputStream(os); //获得本地输出流
                c=new Thread(this);
                c.start();         //启动线程，向客户端发送信息
                String aline;
                while((aline=sin.readLine())!=null)   //接受客户端的信息
                {
                    System.out.println(aline);
                    if(aline.equals("bye"))
                    {
                        flag=false;
                        c.interrupt();
                        break;
                    }
                }
                sout.close();
                os.close();
                sin.close();
                is.close();
                clientSocket.close();
                System.exit(0);
            }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }
    public void run()
    {
        while(true)
        {
            try
            {
                int ch;
                while((ch=System.in.read())!=-1)
                {
                    sout.write((byte)ch);
                    if(ch=='/n')
                    {
                        sout.flush();
                    }
                }
            }
            catch(Exception e)
            {
                System.out.println(e);
            }
        }
    }
    public void finalize()   //析构方法
    {
        try
        {
            server.close();
        }
        catch(IOException e)
        {
            System.out.print(e);
        }
    }
}

//Client1代码如下

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

public class Client1 implements Runnable
{
    Socket clientSocket;
    boolean flag=true;
    Thread c;
    BufferedReader cin;
    DataOutputStream cout;
    public static void main(String args[])
    {
        new Client1().ClientStart();
    }
    public void ClientStart()
    {
        try
        {
            clientSocket=new Socket("192.168.0.1",5678);     //主机Server1的IP地址
            System.out.println("已经建立连接");
            while(flag)
            {
                InputStream is=clientSocket.getInputStream();
                cin=new BufferedReader(new InputStreamReader(is));
                OutputStream os=clientSocket.getOutputStream();
                cout=new DataOutputStream(os);
                c=new Thread(this);
                c.start();
                String aline;
                while((aline=cin.readLine())!=null)
                {
                    System.out.println(aline);
                    if(aline.equals("bye"))
                    {
                        flag=false;
                        c.interrupt();
                        break;
                    }
                }
                cout.close();
                os.close();
                cin.close();
                is.close();
                clientSocket.close();
                System.exit(0);
            }
        }
        catch(Exception e)
        {
            System.out.println(e);
        }
    }
    public void run()
    {
        while(true)
        {
            try
            {
                int ch;
                while((ch=System.in.read())!=-1)
                {
                    cout.write((byte)ch);
                    if(ch=='/n')
                    {
                        cout.flush();
                    }
                }
            }
            catch(Exception e)
            {
                System.out.println(e);
            }
        }
    }
}