逻辑添加：推送电话重复验证

dsk-admin/src/main/java/com/dsk/web/controller/system/SysPushController.java

 package com.dsk.web.controller.system;
 
 
+import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.dsk.common.core.controller.BaseController;
 import com.dsk.common.core.domain.PageQuery;
@@ -11,6 +12,8 @@ import com.dsk.system.service.ISysPushService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.List;
+
 /**
  * 系统推送(SysPush)表控制层
  *
@@ -39,6 +42,10 @@ public class SysPushController extends BaseController {
      */
     @PostMapping
     public R<Void> add(@RequestBody SysPush bean) {
+        List<SysPush> list = baseService.list(Wrappers.<SysPush>lambdaQuery().eq(SysPush::getContact, bean.getContact()));
+        if(CollectionUtils.isNotEmpty(list)){
+            return R.fail("当前推送电话已存在！");
+        }
         return toAjax(baseService.save(bean));
     }