判断不能创建顶级分组

src/main/java/com/syc/slm/slmbi/controller/InstrumentPanelGroupController.java

 package com.syc.slm.slmbi.controller;
 
+import com.baomidou.mybatisplus.core.toolkit.StringUtils;
 import com.syc.slm.common.core.util.R;
 import com.syc.slm.slmbi.dto.CreateInstrumentPanelGroupDTO;
 import com.syc.slm.slmbi.dto.InstrumentPanelGroupDTO;
+import com.syc.slm.slmbi.exception.SysException;
 import com.syc.slm.slmbi.service.InstrumentPanelGroupService;
 import com.syc.slm.slmbi.vo.InstrumentPanelGroupVo;
 import io.swagger.annotations.Api;
@@ -44,7 +46,13 @@ public class InstrumentPanelGroupController extends BaseRestController{
     @ApiOperation("保存仪表板分组")
     @ApiImplicitParam(name = "appId", value = "租户id", required = true,dataTypeClass = String.class)
     public R<String> saveGroup(@PathVariable String appId, @RequestBody CreateInstrumentPanelGroupDTO group) {
-        return call(()->instrumentPanelGroupService.saveGroup(group,appId));
+        return call(() -> {
+            // 不能在service层判断，因为那个方式需要初始化
+            if (StringUtils.isBlank(group.getParentId())) {
+                throw new SysException("不能创建顶级分组");
+            }
+            return instrumentPanelGroupService.saveGroup(group, appId);
+        });
     }
 
     @PutMapping