求网络编程代码
需求1：用户注册功能，具体要求如下：
1）提示用户通过键盘输入信息：用户名，密码，email地址
2）将用户信息传送到服务器
3）服务器接受用户信息并写入到users.txt文件中
4）返回注册成功信息


[解决办法]
client:

Java code

package com.cn.socket;import java.io.DataOutputStream;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;import java.util.Scanner;public class TCPClient {    public static void main(String[] args) throws UnknownHostException, IOException {        String name;        String password;        String email;        Scanner sc = new Scanner(System.in);        System.out.println("输入name:");        name = sc.nextLine();        System.out.println("输入password");        password = sc.nextLine();        System.out.println("输入email");        email = sc.nextLine();        Socket s = new Socket("127.0.0.1", 4444);        DataOutputStream dos = new DataOutputStream(s.getOutputStream());        dos.writeUTF(name + "&" + password + "&" + email);        s.close();    }}