**********写了一个简单的UDP程序，接受英文的消息正常，接受中文的消息显示不完整，请问是什么原因

Question

let me test your code.

Answer 1

OK，因为我有两台机器，所以发信息是指定的IP
import java.awt.*;
import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import java.net.*;public class ChatMain
{
public static void main(String[] args)
{
new pframe();
UdpThread ut=new UdpThread();
ut.start();
}
}
/////////////UDPTHREAD
class UdpThread extends Thread
{
static DatagramSocket udpsocket;
public UdpThread()
{
try
{
            udpsocket=new DatagramSocket(2001);
}
catch(Exception e)
{
}
}
public void run()
{
while(true)
{
try
{
byte dataBuf[]=new byte[512];
    String data;
    InetAddress host;
    int port;
    DatagramPacket recedata=new DatagramPacket(dataBuf,512);

udpsocket.receive(recedata);

                data=new String(recedata.getData(),recedata.getLength());
    host=recedata.getAddress();
                port=recedata.getPort();
    ChatPane pop=new ChatPane();
    pop.textarea.setText("From:"+host+":"+port+"\n"+"MESSAGE___:"+data);
                pop.show();
}
catch(Exception ec)
{

}
}
}
}
/////////////UDPTHREAD END
class pframe extends JFrame
{
private Container con;
private String s1;
private int mes_num;
private JButton button2;
private JLabel label2;
private Icon icon;
private JButton button;
private JPanel panel;
public pframe()
{
setTitle("MYQQ VISION 0.1");
con=getContentPane();
s1="New Message : ";
mes_num=0;
icon=new ImageIcon("boy.gif");
button2=new JButton(icon);
button2.setBorder(BorderFactory.createTitledBorder("Boy"));
button2.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
(new ChatPane()).show();
}
});
        label2=new JLabel(s1+mes_num);
button=new JButton("Chat");
button.setIcon(new ImageIcon("chat.gif"));
        panel=new JPanel(new FlowLayout());
panel.add(button2);
panel.add(label2);
panel.add(button);
panel.setBorder(BorderFactory.createTitledBorder("MYQQ VISION 0.1"));
con.add(panel,BorderLayout.CENTER);
setSize(300,210);
show();
}
}
//////////ChatPane();
class ChatPane extends JFrame
{
JTextArea textarea;
private Container con;
private JScrollPane sp;
private JPanel ctrl;
private JButton send;
private JButton clear;
public ChatPane()
{
con=getContentPane();
setBounds(300,300,243,230);
setTitle("ChatPane");
textarea=new JTextArea(230,190);
textarea.setFont(new Font("宋体",Font.PLAIN,12));
sp=new JScrollPane(textarea);
ctrl=new JPanel(new FlowLayout());
        send=new JButton("Send");
send.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
InetAddress ads=InetAddress.getByName("10.10.111.33");
String sss=textarea.getText();
int l=sss.length();
byte b[]=sss.getBytes();
DatagramPacket gram=new DatagramPacket(b,l,ads,2001);
UdpThread.udpsocket.send(gram);
}
catch(Exception abc)
{
System.out.println("&&&&&&&&&&&&&&&&&&&&&&&&&&");
}
dispose();
}
});
clear=new JButton("Clear");
clear.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ee)
{
textarea.setText("");
}
});
ctrl.add(send);
ctrl.add(clear);
        con.add(textarea,BorderLayout.CENTER);
con.add(ctrl,BorderLayout.SOUTH);
}
}

Answer 2

strBefore = new String(strBefore.getBytes(), "8859_1");