再次优化注册逻辑，修复登录bug

User/User/src/main/java/com/example/User/Entity/User.java

@@ -7,4 +7,5 @@ public class User {
     private Integer id;
     private String username;
     private String password;
+    private String confirmPassword;
 }

User/User/src/main/java/com/example/User/Exceptions/LoginFailedException.java

@@ -0,0 +1,8 @@
+package com.example.User.Exceptions;
+
+//处理登陆失败异常
+public class LoginFailedException extends Exception{
+    public LoginFailedException(String message){
+        super(message);
+    }
+}

User/User/src/main/java/com/example/User/Service/UserService.java

@@ -18,35 +18,39 @@ public class UserService {
         this.passwordEncoder = passwordEncoder;
     }
 
-    // 用户注册
+    //用户注册
     public User register(User user) throws UserAlreadyExistException, InvalidInputException {
-        // 输入检测
+        //输入检测
         if (user.getUsername() == null || user.getUsername().trim().isEmpty()) {
             throw new InvalidInputException("用户名不能为空");
         }
         if (user.getPassword() == null || user.getPassword().trim().isEmpty()) {
             throw new InvalidInputException("密码不能为空");
         }
+        //比较两次输入的密码
+        if (!user.getPassword().equals(user.getConfirmPassword())) {
+            throw new InvalidInputException("两次输入的密码不一致");
+        }
 
-        // 检测用户名是否存在
+        //检测用户名是否存在
         User existUser = userMapper.selectByUsername(user.getUsername());
         if (existUser != null) {
             throw new UserAlreadyExistException("用户已存在");
         }
 
-        // 密码加密
+        //密码加密
         user.setPassword(passwordEncoder.encode(user.getPassword()));
 
-        // 插入用户
+        //插入用户
         userMapper.insert(user);
         return user;
     }
 
     //用户登录
-    public User login(String username, String password) throws Exception {
+    public User login(String username, String password) throws LoginFailedException {
         User user = userMapper.selectByUsername(username);
-        if (user == null || !user.getPassword().equals(password)) {
-            throw new Exception("登陆失败，账号或密码错误");
+        if (user == null || !passwordEncoder.matches(password, user.getPassword())) {
+            throw new LoginFailedException("登陆失败，账号或密码错误");
         }
         return user;
     }