update 删除班级前校验班级是否有学生

server-wx-api/src/main/java/cn/exploring/engine/server/wx/web/ClassController.java

@@ -39,7 +39,7 @@ public class ClassController {
     @PostMapping("batchDeleted")
     public Object batchDeleted(@RequestBody List<Integer> idList) {
         String errMsg = classService.batchDeletedData(idList);
-        return StringUtils.isNotBlank(errMsg) ? ResponseUtil.ok("成功") : ResponseUtil.fail(402, errMsg);
+        return StringUtils.isNotBlank(errMsg) ? ResponseUtil.fail(402, errMsg) : ResponseUtil.ok("成功");
     }
 
     @GetMapping("/listAll")