Java TCP 程序

import java.io.*;
import java.net.Socket;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.util.Scanner;

class ServerSocketTest {
public static void main(String[] args) {
try {
ServerSocket ss = new ServerSocket(6000);
System.out.println("Server running, waitting for client to login ...");
Socket s = ss.accept();

OutputStream os = s.getOutputStream();
InputStream is = s.getInputStream();
os.write("Hello Wellcome\n".getBytes());
os.flush();

/*
byte[] buf = new byte[1024];
int len = is.read(buf);
System.out.println(new String(buf,0,len));*/

BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = null;
while((line = br.readLine()) != null){
System.out.println(line);
}

os.close();
is.close();
s.close();
ss.close();

} catch (Exception e) {
e.printStackTrace();
}
}
}

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

public class SocketTest {
public static void main(String[] args){
try {
System.out.println(InetAddress.getLocalHost());
Socket s = new Socket(InetAddress.getLocalHost(), 6000);

OutputStream os = s.getOutputStream();
PrintWriter pw = new PrintWriter(os);
pw.write("username:fangying;password:123\n");
pw.flush();

InputStream is = s.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line = null;
while ((line = br.readLine()) != null) {
System.out.println("client get :" + line);
}

br.close();
is.close();
pw.close();
os.close();
s.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}