手机、邮箱、用户编码登录
package login;
/**
* 常量类(改造拉到你自己项目里面)
*
* @author ZengWenFeng
* @date 2023.09.17
* @email 117791303@qq.com
* @mobile 13805029595
*/
public class Constant
{
// 登录界面的登录方式：手机、邮箱、用户名
public static final String LOGIN_TYPE_MOBILE = "MOBILE";
public static final String LOGIN_TYPE_EMAIL = "EMAIL";
public static final String LOGIN_TYPE_USERNAME = "USERNAME";
public Constant()
{
}
}
package login;
/**
* 用户实体类
*
* @author ZengWenFeng
* @date 2023.09.17
* @email 117791303@qq.com
* @mobile 13805029595
*/
public class User
{
private String id;
private String usercode;
private String username;
private String email;
private String mobile;
private String password;
//手机验证码（放另外一张表）
//手机验证码生成时间
//手机验证码结束时间
public User()
{
}
public User(String id, String usercode, String username, String email, String mobile, String password)
{
this.id = id;
this.usercode = usercode;
this.username = username;
this.email = email;
this.mobile = mobile;
this.password = password;
}
public String getId()
{
return id;
}
public void setId(String id)
{
this.id = id;
}
public String getUsername()
{
return username;
}
public String getUsercode()
{
return usercode;
}
public void setUsercode(String usercode)
{
this.usercode = usercode;
}
public void setUsername(String username)
{
this.username = username;
}
public String getEmail()
{
return email;
}
public void setEmail(String email)
{
this.email = email;
}
public String getMobile()
{
return mobile;
}
public void setMobile(String mobile)
{
this.mobile = mobile;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
}package login;
import java.util.ArrayList;
/**
* 模拟服务端登录服务类(改造拉到你自己项目里面)
*
* @author ZengWenFeng
* @date 2023.09.17
* @email 117791303@qq.com
* @mobile 13805029595
*/
public class LoginService
{
public LoginService()
{
}
// 模拟用户数据库
private ArrayList<User> listUser = new ArrayList<User>();
// 注册用户
public void initUser(User user)
{
listUser.add(user);
}
// 登录方法
public User login(String identifier, String password)
{
String email = "^\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*$";
String moblie = "^[1][34578]\\d{9}$";
//
User user = null;
// 手机号登录，正常来说，判断手机是没法子用正则，因为手机变化太快了！！
// 这个地方还是要用界面进来的类型来判断，不然的话
// 【你如何确定 123 0000 0000 它就一定不是手机号码呢】
// 【正则表达式有个致命问题，就是一旦变化没法子及时匹配】
if(identifier.matches(moblie))
{
user = getUserByMobile(listUser, identifier);
}
// 邮箱登录
else if(identifier.matches(email))
{
user = getUserByEmail(listUser, identifier);
}
// 用户名登录
else
{
//如果输入11201234567，识别不到电话号码，就会直接进来
//这个时候11201234567被当做username去查询肯定为null
//然而数据库有可能存在User user3 = new User("user3", "user3@example.com", "11201234567", "kissme");
user = getUserByUsercode(listUser, identifier);
//----------------测试的时候可以注释下面
if (user == null)
{
user = getUserByMobile(listUser, identifier);
}
//----------------
}
if (user != null && user.getPassword().equals(password))
{
return user;
}
else
{
return null; // 登录失败
}
}
public User login2(String type, String identifier, String password)
{
//
User user = null;
// 手机号登录，正常来说，判断手机是没法子用正则，因为手机变化太快了！！
// 这个地方还是要用界面进来的类型来判断，不然的话
// 【你如何确定 123 0000 0000 它就一定不是手机号码呢】
if(type.equals(Constant.LOGIN_TYPE_MOBILE))
{
user = getUserByMobile(listUser, identifier);
}
// 邮箱登录
else if(type.equals(Constant.LOGIN_TYPE_EMAIL))
{
user = getUserByEmail(listUser, identifier);
}
// 用户名登录
else
{
user = getUserByUsercode(listUser, identifier);
}
if (user != null && user.getPassword().equals(password))
{
return user;
}
else
{
return null; // 登录失败
}
}
public String getIdByMobile(ArrayList<User> listUser, String identifier)
{
return null;
}
public String getIdByEmail(ArrayList<User> listUser, String identifier)
{
return null;
}
public String getIdByUsername(ArrayList<User> listUser, String identifier)
{
return null;
}
public User getUserByMobile(ArrayList<User> listUser, String identifier)
{
for (int i = 0; i < listUser.size(); i++)
{
User curUser = listUser.get(i);
if (curUser != null && curUser.getMobile() != null && curUser.getMobile().equals(identifier))
{
return curUser;
}
}
return null;
}
public User getUserByEmail(ArrayList<User> listUser, String identifier)
{
for (int i = 0; i < listUser.size(); i++)
{
User curUser = listUser.get(i);
if (curUser != null && curUser.getEmail() != null && curUser.getEmail().equals(identifier))
{
return curUser;
}
}
return null;
}
public User getUserByUsercode(ArrayList<User> listUser, String identifier)
{
for (int i = 0; i < listUser.size(); i++)
{
User curUser = listUser.get(i);
if (curUser != null && curUser.getUsercode() != null && curUser.getUsercode().equals(identifier))
{
return curUser;
}
}
return null;
}
}
package login;
/**
* 模拟用户界面UI登录
*
*
* @author ZengWenFeng
* @date 2023.09.17
* @email 117791303@qq.com
* @mobile 13805029595
*/
public class LoginTest
{
public LoginTest()
{
}
public static void main(String[] args)
{
LoginService loginService = new LoginService();
// 注册一些用户
User user1 = new User("005126", "user1", "曾大锋", "user1@example.com", "01234567891", "1314");
User user2 = new User("005127", "user2", "曾二锋", "user2@example.com", "12301234567", "iloveu");
User user3 = new User("005128", "user3", "曾三锋", "user3@example.com", "11201234567", "kissme");
User user4 = new User("005129", "user4", "曾小锋", "117791303@qq.com", "13805029595", "kissme");
loginService.initUser(user1);
loginService.initUser(user2);
loginService.initUser(user3);
loginService.initUser(user4);
// -----------------
// --模拟登录
// 使用手机号、邮箱或用户名登录
// -----------------
//email、mobile、username，因为手机号这个变动太大
//【界面操作 1：选择类型 2：输入手机或用户或邮箱 3：输入密码】
//【简单的问题： 112-0123-4567 开头的11位字符串 算手机号码 还是用户名呢】
//【简单的问题： 112-0123-4567 假设移动开出的系列号码】
//【手机号码长度就一定是11位，不会像身份证从15到18】
String type = "moble";
type = Constant.LOGIN_TYPE_MOBILE;
String identifier = "13805029595";
identifier = "11201234567";
String password = "kissme";
User loginUser = loginService.login(identifier, password);
if (loginUser != null)
{
System.out.println("登录成功，用户信息：" + loginUser.getUsername());
}
else
{
System.out.println("登录失败，用户名或密码不正确");
}
loginUser = loginService.login2(type, identifier, password);
if (loginUser != null)
{
System.out.println("登录成功，用户信息：" + loginUser.getUsername());
}
else
{
System.out.println("登录失败，用户名或密码不正确");
}
}
}
最后奖励自己一个【鸡腿】
