java評論、回復功能設計與實現(xiàn)方法

更新時間：2022年06月20日 10:22:28 作者：PoemOfficer

很多項目或者系統(tǒng)都有評論或者回復的需求,但評論回復的實現(xiàn)往往都比較復雜,也不好實現(xiàn),下面這篇文章主要給大家介紹了關于java評論、回復功能設計與實現(xiàn)的相關資料,需要的朋友可以參考下

效果展示

總共是兩層回復（回復評論、回復評論下的回復）

數(shù)據(jù)庫設計

評論表（TFW_Comments）和回復內容表（TFW_UserResponse）以及評論回復關系表（TFW_MsgRelation）

數(shù)據(jù)庫設計思路：

注：各位讀者自動忽略評論表的服務機構ID字段，這個字段相當于這條評論是在哪個帖子（文章下面）

1、根據(jù)文章ID或者是帖子ID查詢評論表獲取評論（本文的服務機構ID）。第一層（評論）

2、根據(jù)評論ID并且回復類型等于1的去關系表獲取第二層的回復（commentsId）。第二層（評論下的回復）

3、根據(jù)評論ID、回復類型等于2、回復ID去關系表獲取第三層回復。第三層（評論下回復中的回復）注：回復ID是它的上級

實現(xiàn)類源碼

@Override
    public Map<String, Object> findComments(JSONObject jsonObject) {
        data.clear();
        String userId = jsonObject.getString("userId");
 
        String role = this.role(jsonObject);
        if (role.equals("-1")){
            //沒有權限
            data.put("error","-1");
            data.put("msg","當前用戶沒有權限");
            return data;
        }
 
        List<Map<String, Object>> info = commentsDao.findComment(jsonObject.getString("fWJLID"),null);
        //查詢點贊次數(shù)
        int countTag = 0;
        MsgRelationTag msgRelationTag = new MsgRelationTag();
 
        for (Map item : info){
            item.put("inputShow",false);
            int commentsId = (int) item.get("commentsId");
            //查詢點贊次數(shù)
             countTag = msgRelationDao.findCountTagByTagId(commentsId,1);
            item.put("countTag",countTag);
            //設置點贊狀態(tài)
            msgRelationTag.setTagId(commentsId);
            msgRelationTag.setTagType(1);
            msgRelationTag.setTagUserId(Integer.parseInt(userId));
            MsgRelationTag msgTag = msgRelationDao.findMsgTag(msgRelationTag);
            if (msgTag != null) {
                item.put("tagStatus",msgTag.getStatus());
            }else {
                item.put("tagStatus","");
            }
            //如果有@id
            if (item.get("atId") != null){
                String content = item.get("content").toString();
                StringBuffer tmrAtId = findUserName(item.get("atId").toString());
                item.put("content",content+'@'+tmrAtId);
            }
            //二級回復數(shù)據(jù)
            List<Map<String, Object>> twoReply = new ArrayList<>();
            //所有數(shù)據(jù)
            List<Map<String, Object>> userResponse = userResponseDao.findUserResponse(commentsId, null, "","",null);
            for (Map userResponseInfo :userResponse){
                int userResponseIds = Integer.parseInt(userResponseInfo.get("userResponseId").toString());
                //查詢點贊次數(shù)
                countTag = msgRelationDao.findCountTagByTagId(userResponseIds,2);
                //設置點贊狀態(tài)
                msgRelationTag.setTagId(userResponseIds);
                msgRelationTag.setTagType(2);
                msgTag = msgRelationDao.findMsgTag(msgRelationTag);
                if (msgTag != null) {userResponseInfo.put("tagStatus",msgTag.getStatus());}else {userResponseInfo.put("tagStatus","");}
                userResponseInfo.put("countTag",countTag);
                userResponseInfo.put("inputShow",false);
                Integer responseType = (Integer) userResponseInfo.get("responseType");
                for (Map stairReplyInfo : userResponse){
                    Integer  userResponseId = (Integer) stairReplyInfo.get("userResponseId");
                    int msgRelationId = Integer.parseInt(stairReplyInfo.get("msgRelationId").toString());
                    //接受者id*/
                    twoReply = userResponseDao.findUserResponse(msgRelationId, userResponseId,"1","",null); //二級回復數(shù)據(jù)
                    for (Map twoReplyItem : twoReply){
                        int twoReplyId = Integer.parseInt(twoReplyItem.get("userResponseId").toString());
                        twoReplyItem.put("inputShow",false);
                        //查詢點贊次數(shù)
                        countTag = msgRelationDao.findCountTagByTagId(twoReplyId,2);
                        twoReplyItem.put("countTag",countTag);
                        //設置點贊狀態(tài)
                        msgRelationTag.setTagId(twoReplyId);
                        msgTag = msgRelationDao.findMsgTag(msgRelationTag);
                        if (msgTag != null) {twoReplyItem.put("tagStatus",msgTag.getStatus());}else {twoReplyItem.put("tagStatus","");}
                        String userRepContent = twoReplyItem.get("userRepContent").toString();
                        if (twoReplyItem.get("tmrAtId") != null){
                            StringBuffer tmrAtId = findUserName(twoReplyItem.get("tmrAtId").toString());
                            twoReplyItem.put("userRepContent",userRepContent+'@'+tmrAtId);
                        }
 
                    }
                    stairReplyInfo.put("twoReply",twoReply);
                }
            }
            item.put("stairReply",userResponse);
        }
        data.put("data",info);
        data.put("error",0);
        data.put("msg","查詢成功");
        return data;
    }

其它的代碼可以忽略。主要語句有：

獲取帖子下的評論

 List<Map<String, Object>> info = commentsDao.findComment(jsonObject.getString("fWJLID"),null);

上圖根據(jù)FWJLID獲取評論。（此處可以當成帖子的ID，獲取帖子下的評論）一級展示

對應SQL語句（OPT是我的用戶表）

select tc.content ,tc.commentsId,convert(varchar(19),tc.startTime,120) as startTime,tc.recipientId ,tc.operatorId,zo.NAME as operatorName,tc.atId,zo.HeadImgUrl as operatorHeadImgUrl
         from TFW_Comments tc
         left join zd_opt zo on zo.AID = tc.operatorId where tc.FWJLID = 5101

查詢結果：

獲取評論下的回復

List<Map<String, Object>> userResponse = userResponseDao.findUserResponse(commentsId, null, "","",null);

上圖根據(jù)commentsid獲取評論下的回復。（根據(jù)評論ID獲取回復）二級展示

對應sql語句

select
 	 tur.userResponseId,tur.operatorId,tur.recipientId,convert(varchar(19),tur.startTime,120) as startTime,tur.userRepContent,tmr.atId as tmrAtId,
 	 tmr.msgRelationId ,tmr.responseType,tmr.replyId,
        zo.NAME as operatorName,
        zo1.NAME as recipientName,
        zo.HeadImgUrl as operatorHeadImgUrl,
        zo1.HeadImgUrl as recipientHeadImgUrl
        from TFW_MsgRelation tmr
        left join TFW_UserResponse tur on tur.userResponseId = tmr.userResponseId
        left join zd_opt zo on zo.AID = tur.operatorId
        left join zd_opt zo1 on zo1.AID = tur.recipientId where tmr.commentsId = 47

查詢結果

獲取二級回復

 twoReply = userResponseDao.findUserResponse(msgRelationId, userResponseId,"1","",null); //二級回復數(shù)據(jù)

上圖是根據(jù)評論ID（msgRelationId）和回復ID（userResponseId）去獲取二級回復。回復ID也就是父類。就是回復那一條回復的ID。第三層展示

對應sql

select
 	 tur.userResponseId,tur.operatorId,tur.recipientId,convert(varchar(19),tur.startTime,120) as startTime,tur.userRepContent,tmr.atId as tmrAtId,
 	 tmr.msgRelationId ,tmr.responseType,tmr.replyId,
        zo.NAME as operatorName,
        zo1.NAME as recipientName,
        zo.HeadImgUrl as operatorHeadImgUrl,
        zo1.HeadImgUrl as recipientHeadImgUrl
        from TFW_MsgRelation tmr
        left join TFW_UserResponse tur on tur.userResponseId = tmr.userResponseId
        left join zd_opt zo on zo.AID = tur.operatorId
        left join zd_opt zo1 on zo1.AID = tur.recipientId where tmr.commentsId = 136 and tmr.replyId = 155

查詢結果