用JAVA写的通讯类 服务器端接受不到客户端的消息 帮看看这么回事

[yulunlean]

//服务器端

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;
import java.util.*;

public class Server extends JFrame
{
	JTextArea txt;
	public void serve()
	{
		txt=new JTextArea();
		this.setTitle("学习通讯类");
		this.setLayout(new BorderLayout());
		this.add(txt,BorderLayout.CENTER);
		this.setSize(500,300);
		this.setVisible(true);
		
		try
		{
			ServerSocket seSocket=new ServerSocket(8000);
			txt.append("信息接受时间是:"+new Date()+'\n');
			Socket st=seSocket.accept();
			
			DataInputStream in=new DataInputStream(st.getInputStream());
			
			while(true)
			{
				String Dialog=in.readLine();
				txt.append("从客户端收到信息"+Dialog+'\n');
			}
			
		}
		catch(IOException ex)
		{
			System.err.println(ex);
		}
	}
	public static void main(String args[])
	{
		Server myserver=new Server();
		myserver.serve();
	}
}










//客户端


import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.*;
import java.util.*;

public class Client extends JFrame implements ActionListener
{
	JTextArea txta;
	JTextField txtf;
	JPanel pl;
	JButton bt;
	DataOutputStream out;
	Container f=this.getContentPane();
	
	public void client()
	{
		f.setLayout(new BorderLayout());
		txta=new JTextArea();
		f.add(txta,BorderLayout.CENTER);
		txtf=new JTextField(20);
		bt=new JButton("发送");
		pl=new JPanel();
		pl.setLayout(new FlowLayout());
		pl.add(txtf);
		pl.add(bt);
		bt.addActionListener(this);
		f.add(pl,BorderLayout.SOUTH);
		setTitle("信息发送端");
		setSize(500,300);
		setVisible(true);
		
		try
		{
			Socket sc=new Socket("192.168.0.25",8000);
			out=new DataOutputStream(sc.getOutputStream());
		}
		catch(IOException ex)
		{
			txta.append(ex.toString()+'\n');
		}
	}
	
	public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==bt)
		{
			String Dialog=txtf.getText();
			try
			{
				out.writeChars(Dialog);
				out.flush();
				txta.append("已经发送对话:"+Dialog+'\n');
			}
			catch(IOException ex)
			{
				txta.append(ex.toString()+'\n');
			}
		}
	}
				
	public static void main(String args[])
	{
		Client myclient=new Client();
		myclient.client();
	}
}
		

都能运行
放2台电脑上
发的信息 服务器的电脑就是收不到
郁闷了

[gwu0318]

out.writeChars(Dialog);

这句改为out.writeUTF(Dialog);

[timbear]

停止客户端出现：java.net.SocketException: Connection reset

服务端出现这个异常了，客户端还是连到服务端了，不知为什么没有输出内容来。

import java.net.*;
import java.io.*;
class NetTest extends Thread
{
	public static void main(String [] args)
	{
		if (args.length>0)
		{
			server();
		}
		else
		{
			client();
		}
	}
	private Socket s;
	public  NetTest(Socket s)
	{
		this.s=s;
	}
	public void run()
	{
		try
		{
			OutputStream os=s.getOutputStream();
			InputStream  is=s.getInputStream();
			os.write("server".getBytes());
			byte [] buf=new byte[100];
			int len =is.read(buf);
			System.out.println(new String(buf,0,len) );
			os.close();
			is.close();
			s.close();	
		}
		catch(Exception ex)
		{
			ex.printStackTrace();
		}
	}
	public static void server()
	{
		try
		{
			ServerSocket ss=new ServerSocket(6000);
			while(true)
			{
			  Socket s=ss.accept();
			  new NetTest(s).start(); 
			  //ss.close();
		  }	
		}
		catch(Exception ex)
		{
			ex.printStackTrace();
		}
	}
	public static void client()
	{
		try
		{
			Socket s=new Socket(InetAddress.getByName(null),6000);
			OutputStream os=s.getOutputStream();
			InputStream  is=s.getInputStream();
			byte [] buf=new byte[100];
			int len =is.read(buf);
			System.out.println(new String(buf,0,len) );
			os.write("client".getBytes());
			os.close();
			is.close();
			s.close();		
						
		}
		catch(Exception ex)
		{
			ex.printStackTrace();
			System.out.println("网络不通");
		}
	}
}

以前搞的一个，测试过可以用，参考一下，我去研究你的程序！