接收返回值，做空值判断

换个名字嗨起来

2024-07-25 3cde2386c1ddaeeacc8b815d25af3b6a84541e46

 src/main/java/com/ruoyi/doublePrevention/controller/PreventRiskEventController.java

@@ -1,7 +1,5 @@
package com.ruoyi.doublePrevention.controller;



import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ruoyi.common.utils.poi.ExcelUtil;