拼接字符串null值问题

blade-service/blade-desk/src/main/java/org/springblade/desk/basic/controller/TeamSetController.java

@@ -3,6 +3,7 @@
  */
 package org.springblade.desk.basic.controller;
 
+import cn.hutool.core.util.StrUtil;
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.metadata.IPage;
 import com.github.xiaoymin.knife4j.annotations.ApiOperationSupport;
@@ -204,9 +205,13 @@ public class TeamSetController extends BladeController {
                 relTeamSetUserService.save(relTeamSetUser);
                 R<User> user = iUserClient.userInfoById(teamId);
                 if(null != user && null != user.getData() && null != user.getData().getRealName()){
+                    if (StrUtil.isEmpty(team)) {
+                        team = user.getData().getRealName();
+                    } else {
                         team = team + user.getData().getRealName() + ",";
                     }
                 }
+            }
 //            result = teamIds.stream()
 //                    .map(Object::toString) // 或者直接使用String::valueOf，效果相同
 //                    .collect(Collectors.joining(","));