update

mec-biz/src/main/java/com/ym/mec/biz/service/impl/ImGroupMemberServiceImpl.java

@@ -161,7 +161,8 @@ public class ImGroupMemberServiceImpl extends BaseServiceImpl<Long, ImGroupMembe
 	public boolean join(Long imGroupId, Map<Integer, String> userRoleMap) {
 		ImGroup imGroup = imGroupDao.getLocked(imGroupId);
 		if (imGroup == null) {
-			imGroup = joinGroup(imGroupId,null,null,false,userRoleMap);
+			joinGroup(imGroupId,null,null,false,userRoleMap);
+			return true;
 		}
 		//检查用户是否已存在
 		List<Integer> existUserIdList = imGroupMemberDao.queryByImGroupIdAndUserId(imGroupId.toString(), userRoleMap.keySet().stream().filter(Objects::nonNull).map(Objects::toString)