feat(auth): 优化注册功能并添加注册异常处理

- 新增 RegistrationException 类用于处理注册相关的异常
- 在全局异常处理器中添加 RegistrationException 的处理逻辑
- 修改用户服务中的注册逻辑，当用户名或邮箱已存在时抛出 RegistrationException
- 更新注册码实体类，将日期时间字段改为字符串类型
- 调整注册码生成和验证逻辑，使用字符串格式的日期时间

biji-houdaun/src/main/java/com/test/bijihoudaun/common/advice/GlobalExceptionHandler.java

@@ -1,7 +1,7 @@
 package com.test.bijihoudaun.common.advice;
 
 import com.test.bijihoudaun.common.exception.BaseException;
-
+import com.test.bijihoudaun.common.exception.RegistrationException;
 import com.test.bijihoudaun.common.response.R;
 import com.test.bijihoudaun.common.response.ResultCode;
 import jakarta.servlet.http.HttpServletRequest;
@@ -33,6 +33,15 @@ public class GlobalExceptionHandler {
         return R.fail(e.getResultCode().getCode(), e.getMessage());
     }
 
+    /**
+     * 处理注册异常
+     */
+    @ExceptionHandler(RegistrationException.class)
+    public R<String> handleRegistrationException(RegistrationException e) {
+        log.warn("Registration attempt failed: {}", e.getMessage());
+        return R.fail(e.getMessage());
+    }
+
     /**
      * 处理文件大小超出限制异常
      */

biji-houdaun/src/main/java/com/test/bijihoudaun/common/exception/RegistrationException.java

@@ -0,0 +1,7 @@
+package com.test.bijihoudaun.common.exception;
+
+public class RegistrationException extends RuntimeException {
+    public RegistrationException(String message) {
+        super(message);
+    }
+}

biji-houdaun/src/main/java/com/test/bijihoudaun/entity/RegistrationCode.java

@@ -7,7 +7,6 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
-import java.time.LocalDateTime;
 
 @Data
 @TableName("registration_codes")
@@ -24,11 +23,51 @@ public class RegistrationCode implements Serializable {
     private String code;
 
     @Schema(description = "过期时间", name = "expiryTime")
-    private LocalDateTime expiryTime;
+    private String expiryTime;
 
     @Schema(description = "创建者", name = "createdBy")
     private String createdBy;
 
     @Schema(description = "创建时间", name = "createdAt")
-    private LocalDateTime createdAt;
+    private String createdAt;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getExpiryTime() {
+        return expiryTime;
+    }
+
+    public void setExpiryTime(String expiryTime) {
+        this.expiryTime = expiryTime;
+    }
+
+    public String getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(String createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
 }

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/RegistrationCodeServiceImpl.java

@@ -10,6 +10,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.UUID;
 
 @Service
@@ -21,7 +22,8 @@ public class RegistrationCodeServiceImpl extends ServiceImpl<RegistrationCodeMap
         String code = UUID.randomUUID().toString().replaceAll("-", "").substring(0, 16);
         registrationCode.setCode(code);
         registrationCode.setCreatedBy(creator);
-        registrationCode.setExpiryTime(LocalDateTime.now().plusDays(1));
+        registrationCode.setCreatedAt(LocalDateTime.now().toString());
+        registrationCode.setExpiryTime(LocalDateTime.now().plusDays(1).toString());
         save(registrationCode);
         return code;
     }
@@ -37,7 +39,8 @@ public class RegistrationCodeServiceImpl extends ServiceImpl<RegistrationCodeMap
             return false;
         }
 
-        if (registrationCode.getExpiryTime().isBefore(LocalDateTime.now())) {
+        LocalDateTime expiryTime = LocalDateTime.parse(registrationCode.getExpiryTime());
+        if (expiryTime.isBefore(LocalDateTime.now())) {
             remove(queryWrapper); // 注册码过期，删除
             return false;
         }
@@ -50,6 +53,6 @@ public class RegistrationCodeServiceImpl extends ServiceImpl<RegistrationCodeMap
     @Override
     @Scheduled(cron = "0 0 1 * * ?") // 每天凌晨1点执行
     public void deleteExpiredCodes() {
-        remove(new QueryWrapper<RegistrationCode>().lt("expiry_time", LocalDateTime.now()));
+        remove(new QueryWrapper<RegistrationCode>().lt("expiry_time", LocalDateTime.now().toString()));
     }
 }

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/UserServiceImpl.java

@@ -3,6 +3,7 @@ package com.test.bijihoudaun.service.impl;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.test.bijihoudaun.common.exception.RegistrationException;
 import com.test.bijihoudaun.entity.User;
 import com.test.bijihoudaun.mapper.UserMapper;
 import com.test.bijihoudaun.service.UserService;
@@ -40,18 +41,18 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements Us
         LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
         queryWrapper.eq(User::getUsername, username);
         if (this.count(queryWrapper) > 0) {
-            return null;
+            throw new RegistrationException("用户名已存在");
         }
         queryWrapper = new LambdaQueryWrapper<>();
         queryWrapper.eq(User::getEmail, email);
         if (this.count(queryWrapper) > 0) {
-            return null;
+            throw new RegistrationException("电子邮箱已被注册");
         }
         User user = new User();
         user.setUsername(username);
         user.setPassword(encrypt);
         user.setEmail(email);
-        user.setCreatedAt(new Date());
+        // user.setCreatedAt(new Date()); // Let the database handle the default value
         userMapper.insert(user);
         return user;
     }