程序优化

bi-server/src/main/java/com/usoftchina/bi/server/service/user/UserService.java

@@ -259,8 +259,7 @@ public class UserService {
 
     private void userGroupLog(List<Integer> userList, String username, String groupName, String type){
         //记录LOG
-        List<String> userIdsList = userList.stream().map(x -> x + "").collect(Collectors.toList());
-        String userIds = String.join(",", userIdsList);
+        String userIds = userList.stream().map(Object::toString).collect(Collectors.joining(","));
         String userNames = userMapper.getUserByIds(userIds);
         String[] userNameArray = userNames.split(",");
         StringBuilder sb = new StringBuilder();