基于TCP协议的Client/Server网络编程基础

1、 编写一个基于TCP协议的服务器程序。服务器等待客户端通报它的名字，服务器回复名字并加上“你好！”的问候。

//Server1.java
import java.net.*;
import java.io.*;
class Server1
{
	public static void main(String[] args) throws IOException
	{
		ServerSocket svsk=new ServerSocket(10000);
		System.out.println("我的专属服务器开始运行。"+new java.util.Date());
		while(true)
		{
			Socket sk=svsk.accept();
			InputStream in=sk.getInputStream();
			OutputStream out=sk.getOutputStream();
			
			InputStreamReader ir=new InputStreamReader(in);
			BufferedReader br=new BufferedReader(ir);
			OutputStreamWriter ow=new OutputStreamWriter(out);
			BufferedWriter bw=new BufferedWriter(ow);
			
			String s=br.readLine();
			System.out.println(s+"来访。");
			bw.write("你好!"+s);
			bw.newLine();
			bw.flush();
			
			in.close();
			out.close();
			sk.close();
		}
	}
}
//Client1.java
import java.net.*;
import java.io.*;
class Client1
{
	public static void main(String[] args) throws IOException
	{
		Socket sk=new Socket("127.0.0.1",10000);
		InputStream in=sk.getInputStream();
		OutputStream out=sk.getOutputStream();	
		InputStreamReader ir=new InputStreamReader(in);
		BufferedReader br=new BufferedReader(ir);
		OutputStreamWriter ow=new OutputStreamWriter(out);
		BufferedWriter bw=new BufferedWriter(ow);
		
		bw.write("你的名字");
		bw.newLine();
		bw.flush();
		String s=br.readLine();
		System.out.println(s);
		in.close();
		out.close();
		sk.close();
	}
}

2、 编写一个基于TCP协议的客户端程序。客户端程序连接上服务器程序后，通报自己的名字，等待服务器的回复问候。

//TCPServer.java
import java.io.*;
import java.net.*;
class TCPServer{
public static void main(String [] args) throws IOException{
	ServerSocket ss = new ServerSocket(1000);
	System.out.println("我的服务器"+new java.util.Date());
	while(true){
		Socket s=ss.accept();
		InputStream in = s.getInputStream();
		OutputStream out = s.getOutputStream();
		InputStreamReader ir = new InputStreamReader(in);
		OutputStreamWriter ow = new OutputStreamWriter(out);
		BufferedWriter dout = new BufferedWriter(ow);
		BufferedReader din = new BufferedReader(ir);
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String s1,s2;
		do{
			s1=din.readLine();
			System.out.println("Client Says:"+s1);
			System.out.println("Server says:");
			s2=br.readLine();
			dout.write(s2);
			dout.newLine();
			dout.flush();
		}while(!s1.equals("BYE"));
	in.close();
	out.close();
	s.close();
	}
}
}

//TCPClient.java
import java.net.*;
import java.io.*;
class TCPClient{
	public static void main(String [] args) throws IOException{
		Socket s = new Socket("127.0.0.1",1000);
		InputStream in = s.getInputStream();
		OutputStream out = s.getOutputStream();
		InputStreamReader ir = new InputStreamReader(in);
		OutputStreamWriter ow = new OutputStreamWriter(out);
		BufferedWriter dout = new BufferedWriter(ow);
		BufferedReader din = new BufferedReader(ir);
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String s1,s2;
		do{
			System.out.println("Client Says:");
			s1=br.readLine();
			dout.write(s1);
			dout.newLine();
			dout.flush();
			s2=din.readLine();
			System.out.println("Server says:"+s2);
		}while(!s1.equals("BYE"));
	in.close();
	out.close();
	s.close();
	}
}