java网络编程1

java网络编程

服务器端：

import java.io.*;
import java.net.*;
public class project {
	public static void main(String[] args) {
		ServerSocket server=null;
		Socket you=null;
		DataOutputStream out=null;
		DataInputStream in=null;
		try{
			server=new ServerSocket(4331);
		}catch(IOException e1){
			System.out.println(e1);
		}
		try{
			System.out.println("等待客户呼叫");
			you=server.accept();
			out=new DataOutputStream(you.getOutputStream());
			in=new DataInputStream(you.getInputStream());
			while(true){
				char c=in.readChar();
				System.out.println("服务器收到： "+c);
				out.writeChar((char)(c-32));
				Thread.sleep(500);
			}
		}catch(Exception e){
			System.out.println("客户端已断开"+e);
		}
	}

}

　　客户端：

import java.net.*;
import java.io.*;
public class project{
	public static void main(String args[]){
		Socket mysocket;
		DataInputStream in=null;
		DataOutputStream out=null;
		try{
			mysocket=new Socket("127.0.0.1",4331);
			in=new DataInputStream(mysocket.getInputStream());
			out=new DataOutputStream(mysocket.getOutputStream());
			char c='a';
			while(true)
			{
				if(c>'z')
					c='a';
				out.writeChar(c);
				char s=in.readChar();
				System.out.println("客户收到:"+s);
				c++;
				Thread.sleep(500);
			}
		}catch(Exception e){
			System.out.println("服务器已经断开");
		}
	}
}

　　实验结果：

开启服务：

请求服务：