支持拉黑，屏蔽群成员私聊

cooleshow-app/src/main/java/com/yonge/cooleshow/teacher/controller/ImGroupController.java

@@ -1,11 +1,13 @@
 package com.yonge.cooleshow.teacher.controller;
 
 
+import com.alibaba.fastjson.JSON;
 import com.microsvc.toolkit.common.response.template.R;
 import com.yonge.cooleshow.biz.dal.dto.ImGroupResultDto;
 import com.yonge.cooleshow.biz.dal.dto.ImGroupSearchDto;
 import com.yonge.cooleshow.biz.dal.entity.ImGroup;
 import com.yonge.cooleshow.biz.dal.entity.ImGroupMember;
+import com.yonge.cooleshow.biz.dal.entity.ImUserFriend;
 import com.yonge.cooleshow.biz.dal.enums.ClientEnum;
 import com.yonge.cooleshow.biz.dal.enums.ImGroupMemberRoleType;
 import com.yonge.cooleshow.biz.dal.enums.MK;

cooleshow-app/src/main/java/com/yonge/cooleshow/teacher/controller/ImUserFriendController.java

@@ -1,6 +1,7 @@
 package com.yonge.cooleshow.teacher.controller;
 
 
+import com.alibaba.fastjson.JSON;
 import com.yonge.cooleshow.biz.dal.entity.ImUserFriend;
 import com.yonge.cooleshow.biz.dal.enums.ClientEnum;
 import com.yonge.cooleshow.biz.dal.enums.MK;