userthread.java

java制作的C/S程序

import java.io.*;
import java.net.*;
public class UserThread extends Thread
{
	protected DataInputStream inStream;
	protected DataOutputStream outStream;
	protected Socket socket;
	public UserThread(Socket socket)
	{
		try
		{
			this.socket=socket;
			inStream=new DataInputStream(socket.getInputStream());
			outStream=new DataOutputStream(socket.getOutputStream());     
			sendString("我是客户机!");
		}
		catch(Exception e)
		{
			System.out.println(e.toString());
		}
	}
	public void run()
	{
		String str=null;
		try
		{
			while(true)
			{
				str=inStream.readUTF();
				dataProcess(str);
			}
		}
		catch(Exception e)
		{
			System.out.println(e.toString());
		}
	    finally
    	{
	    	try
	    	{
		    	socket.close();
	    	}
	    	catch(IOException e1)
	    	{
		    	System.out.println(e1.toString());
	    	}
    	}
	}
	public void dataProcess(String msg)
	{
		System.out.println("客户机接受到数据:"+msg);
	}
	public void sendString(String msg) throws IOException
	{
		outStream.writeUTF(msg);
	}
}