Java基础知识强化之网络编程笔记09：TCP之客户端键盘录入服务器写到文本文件中

1. TCP之客户端键盘录入服务器写到文本文件中

（1）客户端：

package cn.itcast_09;

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，服务器输出文本文件
 */
public class ClientDemo {
    public static void main(String[] args) throws IOException {
        // 创建客户端Socket对象
        Socket s = new Socket("192.168.12.92", 23456);

        // 封装键盘录入
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        // 封装通道内的数据
        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();
        }

        // bw.close();
        // br.close();
        s.close();
    }
}

（2）服务器端：

package cn.itcast_09;

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 {
        // 创建服务器Socket对象
        ServerSocket ss = new ServerSocket(23456);

        // 监听客户端连接
        Socket s = ss.accept();

        // 封装通道内的数据
        BufferedReader br = new BufferedReader(new InputStreamReader(
                s.getInputStream()));
        // 封装文本文件
        BufferedWriter bw = new BufferedWriter(new FileWriter("a.txt"));

        String line = null;
        while ((line = br.readLine()) != null) {
            bw.write(line);
            bw.newLine();
            bw.flush();
        }

        bw.close();
        // br.close();
        s.close();
        // ss.close();
    }
}

运行效果，如下：