在上次发表类似文章的基础上做了一点手脚，这次可以直接运行两个控制台，不用再去用telnet IP端口了，这个可以直接在eclipse分别执行服务器端类和客户端类，然后在客户端和服务端上进行交互。更为方便。我的代码实现如下：

首先我的文件结构是

在ServerDemo.java中编写以下代码：

package com.jiaxun.net;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Scanner;

public class ServerDemo {
	//服务器
	public static void testServer(){
		//创建一个服务器
		System.out.println("等待客户端连接。。。");
		PrintWriter pwtoclien = null;
		Scanner keybordscanner = null;
		Scanner inScanner = null;
		ServerSocket ss = null;
		try {
			ss = new ServerSocket(6666);
			//创建一个接收连接客户端的对象
			Socket socket = ss.accept();
			System.out.println(socket.getInetAddress()+"已成功连接到此台服务器上。");
			//字符输出流
			pwtoclien = new PrintWriter(socket.getOutputStream());
			pwtoclien.println("已成功连接到远程服务器！"+"t"+"请您先发言。");
			pwtoclien.flush();
			keybordscanner = new Scanner(System.in);
			inScanner = new Scanner(socket.getInputStream());
			//阻塞等待客户端发送消息过来
			while(inScanner.hasNextLine()){
				String indata = inScanner.nextLine();
				System.out.println("客户端："+indata);
				System.out.print("我(服务端)：");
				String keyborddata = keybordscanner.nextLine();
				System.out.println("我(服务端)："+keyborddata);
				pwtoclien.println(keyborddata);
				pwtoclien.flush();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			pwtoclien.close();
			keybordscanner.close();
			inScanner.close();
			try {
				ss.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
	public static void main(String[] args) {
		testServer();
	}
}

在ClientDemo.java中编写以下代码：

package com.jiaxun.net;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class ClientDemo {
	public static void testClient(){
		System.out.println("正在向服务器请求连接。。。");
		Socket socket = null;
		Scanner keybordscanner = null;
		Scanner inScanner = null;
		PrintWriter pwtoserver = null;
		try {
			socket = new Socket("192.168.0.12", 6666);
			inScanner = new Scanner(socket.getInputStream()); 
			System.out.println(inScanner.nextLine());
			pwtoserver = new PrintWriter(socket.getOutputStream());
			System.out.print("我(客户端)：");
			//先读取键盘录入方可向服务端发送消息
			keybordscanner = new Scanner(System.in);
			while(keybordscanner.hasNextLine()){
				String keyborddata = keybordscanner.nextLine();
				//展示到己方的控制台
				System.out.println("我(客户端)："+keyborddata);
				//写到服务端的的控制台
				pwtoserver.println(keyborddata);
				pwtoserver.flush();
				//阻塞等待接收服务端的消息
				String indata = inScanner.nextLine();
				System.out.println("服务端："+indata);
				System.out.print("我(客户端)：");
			}
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			keybordscanner.close();
			pwtoserver.close();
			inScanner.close();
			try {
				socket.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
	public static void main(String[] args) {
		testClient();
	}
}

ServerDemo的控制台的显示结果

ClientDemo的控制台的显示结果