1、保存订单商品，2、验证参数是否合法

src/main/java/com/gxwebsoft/shop/service/OrderBusinessService.java

@@ -183,11 +183,21 @@ public class OrderBusinessService {
         // 复制请求参数到订单对象
         BeanUtils.copyProperties(request, shopOrder);
 
+        // 确保租户ID正确设置（关键字段，影响微信支付证书路径）
+        shopOrder.setTenantId(loginUser.getTenantId());
+
+        // 验证关键字段
+        if (shopOrder.getTenantId() == null) {
+            throw new BusinessException("租户ID不能为空，这会导致微信支付证书路径错误");
+        }
+
         // 设置用户相关信息
         shopOrder.setUserId(loginUser.getUserId());
         shopOrder.setOpenid(loginUser.getOpenid());
         shopOrder.setPayUserId(loginUser.getUserId());
 
+        log.debug("构建订单对象 - 租户ID：{}，用户ID：{}", shopOrder.getTenantId(), shopOrder.getUserId());
+
         // 生成订单号
         if (shopOrder.getOrderNo() == null) {
             shopOrder.setOrderNo(Long.toString(IdUtil.getSnowflakeNextId()));

src/test/java/com/gxwebsoft/shop/OrderValidationTest.java

@@ -275,5 +275,41 @@ class OrderValidationTest {
         assertEquals(Integer.valueOf(0), result.getOrderStatus());
         assertEquals(Integer.valueOf(10), result.getDeliveryStatus());
         assertEquals(Integer.valueOf(1), result.getPayType());
+
+        // 验证关键字段 - 租户ID（影响微信支付证书路径）
+        assertNotNull(result.getTenantId(), "tenantId 不能为空");
+        assertEquals(testRequest.getTenantId(), result.getTenantId(), "tenantId 必须正确设置");
+    }
+
+    @Test
+    void testBuildShopOrder_TenantIdValidation() throws Exception {
+        // 创建一个新的请求对象，租户ID为空
+        OrderCreateRequest requestWithoutTenant = new OrderCreateRequest();
+        requestWithoutTenant.setType(0);
+        requestWithoutTenant.setTitle("测试订单");
+        requestWithoutTenant.setTotalPrice(new BigDecimal("99.00"));
+        requestWithoutTenant.setTenantId(null); // 设置为空
+
+        // 准备商品项
+        OrderCreateRequest.OrderGoodsItem goodsItem = new OrderCreateRequest.OrderGoodsItem();
+        goodsItem.setGoodsId(10018);
+        goodsItem.setQuantity(1);
+        requestWithoutTenant.setGoodsItems(Arrays.asList(goodsItem));
+
+        // 使用反射调用 buildShopOrder 方法
+        java.lang.reflect.Method buildMethod = OrderBusinessService.class
+                .getDeclaredMethod("buildShopOrder", OrderCreateRequest.class, User.class);
+        buildMethod.setAccessible(true);
+
+        // 执行验证 - 应该抛出异常
+        Exception exception = assertThrows(Exception.class, () -> {
+            buildMethod.invoke(orderBusinessService, requestWithoutTenant, testUser);
+        });
+
+        // 检查是否是 InvocationTargetException 包装的 BusinessException
+        assertTrue(exception instanceof java.lang.reflect.InvocationTargetException);
+        Throwable cause = exception.getCause();
+        assertTrue(cause instanceof BusinessException);
+        assertTrue(cause.getMessage().contains("租户ID不能为空"));
     }
 }