加个字段

pcloud-service-book/src/main/java/com/pcloud/book/group/biz/impl/BookGroupBizImpl.java

@@ -555,6 +555,9 @@ public class BookGroupBizImpl implements BookGroupBiz {
     public Map<String, Object> getBookNameByBookGroupId(Long bookGroupId) throws BizException {
         Map<String, Object> result = new HashMap<>();
         BookGroupDTO bookGroupDTO = bookGroupDao.getDTOById(bookGroupId);
+        if (bookGroupDTO != null) {
+            result.put("joinGroupType", bookGroupDTO.getJoinGroupType());
+        }
         if (null != bookGroupDTO && null != bookGroupDTO.getBookId()) {
             BookDto bookDto = bookBiz.getBaseById(bookGroupDTO.getBookId());
             if (null != bookDto) {