TCP协议客户端键盘录入数据，服务器端写到文本文件

package cn.idcast9;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

// 客户端键盘录入数据，服务器端写到文本文件
public class ClientDemo {
	public static void main(String[] args) throws IOException {
		Socket s = new Socket("192.168.1.115", 12345);
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(
				s.getOutputStream()));
		String line = null;
		while ((line = br.readLine()) != null) {
			if ("over".equals(line)) {
				break;
			}
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		s.close();

	}
}

package cn.idcast9;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo {
	public static void main(String[] args) throws IOException {
		ServerSocket ss = new ServerSocket(12345);
		Socket s = ss.accept();
		BufferedReader br = new BufferedReader(new InputStreamReader(
				s.getInputStream()));
		//服务器端写到文本文件
		BufferedWriter bw = new BufferedWriter(new FileWriter("b.txt"));
		String line = null;
		while ((line = br.readLine()) != null) {
			bw.write(line);
			bw.newLine();
			bw.flush();
		}
		bw.close();
		s.close();

	}
}