增加与ai大模型对话

huimv-employment/fe-service/src/main/java/com/huimv/employment/service/auth/AuthUserValidator.java

@@ -0,0 +1,54 @@
+package com.huimv.employment.service.auth;
+
+import com.huimv.employment.common.exception.BizException;
+import com.huimv.employment.common.exception.ErrorCode;
+import com.huimv.employment.dao.entity.FeUser;
+import com.huimv.employment.dao.mapper.FeUserMapper;
+import org.springframework.stereotype.Service;
+
+/**
+ * JWT 鉴权后校验用户是否仍有效，并以数据库 {@code user_type} 为准。
+ */
+@Service
+public class AuthUserValidator {
+
+    private static final String STATUS_DISABLED = "disabled";
+
+    private final FeUserMapper feUserMapper;
+
+    public AuthUserValidator(FeUserMapper feUserMapper) {
+        this.feUserMapper = feUserMapper;
+    }
+
+    /**
+     * 校验用户存在且未禁用，返回库内真实身份类型。
+     */
+    public ValidatedUser validate(Long userId) {
+        FeUser user = feUserMapper.selectById(userId);
+        if (user == null) {
+            throw new BizException(ErrorCode.UNAUTHORIZED);
+        }
+        if (STATUS_DISABLED.equals(user.getStatus())) {
+            throw new BizException(ErrorCode.USER_DISABLED);
+        }
+        return new ValidatedUser(user.getId(), user.getUserType());
+    }
+
+    public static class ValidatedUser {
+        private final Long userId;
+        private final String userType;
+
+        public ValidatedUser(Long userId, String userType) {
+            this.userId = userId;
+            this.userType = userType;
+        }
+
+        public Long getUserId() {
+            return userId;
+        }
+
+        public String getUserType() {
+            return userType;
+        }
+    }
+}