tcp/ip_properties_file

需求：

　　1.客户端选择登陆或注册操作

　　2.客户进行注册，服务端将数据存入到文件中

　　3.客户端进行登陆，服务端验证用户名密码是否正确

服务端采用多线程，将获得的数据写入配置文件中，文件为静态，

客户端采用单线程

package com.java.login;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

/**
 * 客户端
 * 
 * @author syousetu
 *
 */
public class Client extends Thread {
    public static void main(String[] args) throws UnknownHostException, IOException {
        // 开启服务
        Socket socket = new Socket(InetAddress.getLocalHost(), 9090);

        // 获取socket输出流对象
        OutputStreamWriter socketOut = new OutputStreamWriter(socket.getOutputStream());

        // 获取从键盘输入流对象
        BufferedReader keyReader = new BufferedReader(new InputStreamReader(System.in));

        // 获取socket输入流对象
        BufferedReader socketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));

        // 注册完成会进行登陆
        while (true) {
            System.out.println("请选择操作：A:登陆  B:注册");
            String option = keyReader.readLine();

            if ("a".equalsIgnoreCase(option)) {
                // 登陆
                send(socketOut, option, keyReader);
                // 接受服务器发送过来的信息
                String answer = socketReader.readLine();
                System.out.println(answer);

            } else if ("b".equalsIgnoreCase(option)) {
                // 注册
                send(socketOut, option, keyReader);
                String answer = socketReader.readLine();
                System.out.println(answer);

            }

        }

    }

    public static void send(OutputStreamWriter socketOut, String option, BufferedReader keyReader) throws IOException {
        System.out.println("请输入用户名：");
        String name = keyReader.readLine();
        System.out.println("请输入密码：");
        String password = keyReader.readLine();

        String info = option + " " + name + " " + password + "
";

        socketOut.write(info);
        socketOut.flush();
        
    }

}

package com.java.login;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.Properties;

/**
 * 服务端
 * @author syousetu
 *
 */
public class Server extends Thread {

    // 获得数据公用一个文件
    static File file = new File("D:\user.properties");

    Socket socket;
    //不同的客户端有不同的socker
    public Server(Socket socket) {
        this.socket = socket;
    }

    static {
        try {
            if (!file.exists()) {
                file.createNewFile();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
        try {

            // 获取输出流对象
            OutputStreamWriter socketOut = new OutputStreamWriter(socket.getOutputStream());

            // 获取输入流对象
            BufferedReader socketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            while (true) {
                String info = socketReader.readLine();
                String[] data = info.split(" ");

                String option = data[0];
                String name = data[1];
                String password = data[2];
                System.out.println("option:" + option);

                // 判断是登陆还是操作
                if ("a".equalsIgnoreCase(option)) {
                    // 登陆操作
                    Properties properties = new Properties();
                    // 加载配置文件
                    properties.load(new FileReader(file));
                    if (!properties.contains(name)) {
                        socketOut.write("用户名不存在
");
                    } else if (password.equals(properties.getProperty(name))) {
                        socketOut.write("登陆成功
");
                    } else {
                        socketOut.write("密码错误
");
                    }

                } else if ("b".equalsIgnoreCase(option)) {
                    // 进行注册
                    // 创建一个配置文件类
                    Properties properties = new Properties();
                    // 加载原来的文件
                    properties.load(new FileReader(file));

                    if (properties.contains(name)) {
                        // 用户名已存在
                        socketOut.write("用户名已存在，请重新输入
");
                    } else {
                        // 新用户注册
                        properties.put(name, password);
                        properties.store(new FileWriter(file), "users");
                        socketOut.write("注册成功
");

                    }

                }
                socketOut.flush();
            }

        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    public static void main(String[] args) throws IOException {
        // 开启服务
        ServerSocket serverSocket = new ServerSocket(9090);

        while (true) {
            // 接受链接
            Socket socket = serverSocket.accept();
            new Server(socket).start();
        }

    }

}