使用jdk的socket通信

使用JDK提供的API进行网络通信，会用到Socket,ServerSocket两个类。写个简单的SERVER和CLIENT之间发消息的小程序，竟然发现了挺多的问题。

这是服务器端代码：

package org.chat;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;


public class ChatServer {

	public static void main(String[] args) {
		ChatServer server = new ChatServer();
		server.start();
	}

	public void start() {
		while (true) {
			ServerSocket s = null;
			Socket socket = null;
			try {
				s = new ServerSocket(10001);
				socket = s.accept();
				
				BufferedReader 	in 	= new BufferedReader(new InputStreamReader(socket.getInputStream()));
				PrintWriter 	out = new PrintWriter(socket.getOutputStream(),true);
	
				String content = in.readLine();
				System.out.println(content);
				content = content + "1";
				out.print(content);