refactor(user-card): 优化用户卡包统计数据获取逻辑

- 移除对UserService的依赖，改为使用UserCardStatsMapper直接查询
- 新增UserCardStatsMapper接口用于跨库查询用户余额和积分
- 添加MyBatis XML映射文件实现跨库查询gxwebsoft_core.sys_user表
- 实现类型转换工具方法toBigDecimal和toIntObj确保数据类型安全
- 修复因模块间依赖导致无法访问sys_user表的问题
- 保持租户隔离支持，确保数据安全性

src/main/java/com/gxwebsoft/shop/controller/UserCardController.java

@@ -4,11 +4,10 @@ import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.gxwebsoft.common.core.utils.RedisUtil;
 import com.gxwebsoft.common.core.web.ApiResult;
 import com.gxwebsoft.common.core.web.BaseController;
-import com.gxwebsoft.common.system.entity.User;
-import com.gxwebsoft.common.system.service.UserService;
 import com.gxwebsoft.shop.dto.UserCardStats;
 import com.gxwebsoft.shop.entity.ShopGift;
 import com.gxwebsoft.shop.entity.ShopUserCoupon;
+import com.gxwebsoft.shop.mapper.UserCardStatsMapper;
 import com.gxwebsoft.shop.service.ShopGiftService;
 import com.gxwebsoft.shop.service.ShopUserCouponService;
 import io.swagger.v3.oas.annotations.Operation;
@@ -22,6 +21,7 @@ import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
 @Tag(name = "用户卡包")
@@ -35,7 +35,7 @@ public class UserCardController extends BaseController {
     @Resource
     private RedisUtil redisUtil;
     @Resource
-    private UserService userService;
+    private UserCardStatsMapper userCardStatsMapper;
     @Resource
     private ShopUserCouponService shopUserCouponService;
     @Resource
@@ -57,10 +57,11 @@ public class UserCardController extends BaseController {
             return success("ok", cached);
         }
 
-        // 余额/积分从用户表取；优惠券/礼品卡用 COUNT 聚合
+        // 余额/积分：从 core 库取（避免 modules 库不存在 sys_user 导致报错）；优惠券/礼品卡用 COUNT 聚合
-        User user = userService.getById(userId);
+        Integer tenantId = getTenantId();
-        BigDecimal balance = user == null || user.getBalance() == null ? BigDecimal.ZERO : user.getBalance();
+        Map<String, Object> bp = userCardStatsMapper.selectBalancePoints(userId, tenantId);
-        Integer points = user == null || user.getPoints() == null ? 0 : user.getPoints();
+        BigDecimal balance = toBigDecimal(bp == null ? null : bp.get("balance"));
+        Integer points = toIntObj(bp == null ? null : bp.get("points"));
 
         long coupons = shopUserCouponService.count(new LambdaQueryWrapper<ShopUserCoupon>()
             .eq(ShopUserCoupon::getUserId, userId)
@@ -81,6 +82,37 @@ public class UserCardController extends BaseController {
         return success("ok", stats);
     }
 
+    private static BigDecimal toBigDecimal(Object value) {
+        if (value == null) {
+            return BigDecimal.ZERO;
+        }
+        if (value instanceof BigDecimal) {
+            return (BigDecimal) value;
+        }
+        if (value instanceof Number) {
+            return BigDecimal.valueOf(((Number) value).doubleValue());
+        }
+        try {
+            return new BigDecimal(String.valueOf(value));
+        } catch (Exception e) {
+            return BigDecimal.ZERO;
+        }
+    }
+
+    private static Integer toIntObj(Object value) {
+        if (value == null) {
+            return 0;
+        }
+        if (value instanceof Number) {
+            return ((Number) value).intValue();
+        }
+        try {
+            return Integer.parseInt(String.valueOf(value));
+        } catch (Exception e) {
+            return 0;
+        }
+    }
+
     private static Integer toInt(long value) {
         if (value <= 0) {
             return 0;
@@ -91,4 +123,3 @@ public class UserCardController extends BaseController {
         return (int) value;
     }
 }
-

src/main/java/com/gxwebsoft/shop/mapper/UserCardStatsMapper.java

@@ -0,0 +1,16 @@
+package com.gxwebsoft.shop.mapper;
+
+import com.baomidou.mybatisplus.annotation.InterceptorIgnore;
+import org.apache.ibatis.annotations.Param;
+
+import java.util.Map;
+
+/**
+ * 用户卡包统计查询（跨库读取 gxwebsoft_core.sys_user）
+ */
+public interface UserCardStatsMapper {
+
+    @InterceptorIgnore(tenantLine = "true")
+    Map<String, Object> selectBalancePoints(@Param("userId") Integer userId, @Param("tenantId") Integer tenantId);
+}
+

src/main/java/com/gxwebsoft/shop/mapper/xml/UserCardStatsMapper.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.gxwebsoft.shop.mapper.UserCardStatsMapper">
+
+    <select id="selectBalancePoints" resultType="java.util.HashMap">
+        SELECT balance, points
+        FROM gxwebsoft_core.sys_user
+        WHERE user_id = #{userId}
+          AND deleted = 0
+        <if test="tenantId != null">
+          AND tenant_id = #{tenantId}
+        </if>
+    </select>
+
+</mapper>
+