获取当前用户访客记录没有数据时改为返回null

src/main/java/com/template/services/impl/WelcomeVisitorServiceImpl.java

@@ -76,13 +76,12 @@ public class WelcomeVisitorServiceImpl extends ServiceImpl<WelcomeVisitorMapper,
 
         WelcomeVisitor visitor = this.getOne(queryWrapper);
         if (ObjectUtil.isNull(visitor)) {
-            throw new MyCustomException(ResponseStatusEnum.DATA_NOT_FOUND);
+            return null;
+        } else {
+            WelcomeVisitorVO vo = new WelcomeVisitorVO();
+            BeanUtils.copyProperties(visitor, vo);
+            return vo;
         }
-
-        WelcomeVisitorVO vo = new WelcomeVisitorVO();
-        BeanUtils.copyProperties(visitor, vo);
-
-        return vo;
     }
 
     @Override