feat(GltTicketTemplate): 添加根据商品ID查询水票功能

- 引入LambdaQueryWrapper用于构建查询条件
- 实现getByGoodsId接口支持按商品ID查询水票模板
- 添加按商品ID、删除状态排序和创建时间降序排序逻辑
- 限制查询结果只返回最新的一条记录
- 集成到现有服务层调用体系中

src/main/java/com/gxwebsoft/glt/controller/GltTicketTemplateController.java

@@ -1,5 +1,6 @@
 package com.gxwebsoft.glt.controller;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.gxwebsoft.common.core.web.BaseController;
 import com.gxwebsoft.common.system.entity.User;
 import com.gxwebsoft.glt.service.GltTicketTemplateService;
@@ -54,6 +55,22 @@ public class GltTicketTemplateController extends BaseController {
         return success(gltTicketTemplateService.getByIdRel(id));
     }
 
+    @Operation(summary = "根据商品ID查询水票")
+    @GetMapping("/getByGoodsId/{goodsId}")
+    public ApiResult<GltTicketTemplate> getByGoodsId(@PathVariable("goodsId") Integer goodsId) {
+        GltTicketTemplate template = gltTicketTemplateService.getOne(
+            new LambdaQueryWrapper<GltTicketTemplate>()
+                .eq(GltTicketTemplate::getGoodsId, goodsId)
+                .eq(GltTicketTemplate::getDeleted, 0)
+                .orderByAsc(GltTicketTemplate::getSortNumber)
+                .orderByDesc(GltTicketTemplate::getCreateTime)
+                .last("limit 1")
+        );
+        return success(template);
+    }
+
+
+
     @PreAuthorize("hasAuthority('glt:gltTicketTemplate:save')")
     @OperationLog
     @Operation(summary = "添加水票")