java练习：json字符串转map、arrayList

使用依赖包：

<dependency>
            <groupId>com.alibaba.fastjson2</groupId>
            <artifactId>fastjson2</artifactId>
            <version>2.0.0</version>
        </dependency>

获取数据：

package com.example.myblog.entity;

import lombok.Data;

import java.util.Map;

@Data
public class MsgBody {
    private String eventId;
    private String patientId;
    private String content;
    private Map msgContentBody;
    private String eventProfessionType;
    private String nowTime;
}

 

package com.example.myblog.service.impl;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.alibaba.fastjson2.JSONArray;

import com.example.myblog.dao.MsgMapper;
import com.example.myblog.entity.MsgBody;
import com.example.myblog.service.MsgServe;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.UUID;

@Service
public class MsgServeImpl implements MsgServe {
    @Autowired
    @Resource
    private MsgMapper msgMapper;

    @Override
    public void saveMsg(MsgBody msgBody) {
        msgBody.setEventId(UUID.randomUUID().toString().replace("-",""));
        msgMapper.saveMsg(msgBody);
    }

    @Override
    public ArrayList<MsgBody> getMsg() {
        ArrayList<MsgBody> list =msgMapper.getMsg();

        for (int i = 0; i < list.size(); i++) {
            String content = list.get(i).getContent();
            JSONObject msgContentBody = JSONObject.parseObject(content,null);

            String remindRule = String.valueOf(msgContentBody.get("remindRule"));
            JSONArray remind = JSON.parseArray(remindRule);
            msgContentBody.put("remindArrayRule",remind);

            String eduID = String.valueOf(msgContentBody.get("eduID"));
            if(!"".equals(eduID)){
                msgContentBody.put("eduArray",eduID.split(","));
            }else{
                msgContentBody.put("eduArray",new ArrayList<String>());
            }
            list.get(i).setMsgContentBody(msgContentBody);
        }

        return list;
    }
}

保存的数据格式：

{
    "content": "{\"reminderAudio\":\"/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3\",\"contentPath\":\"/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3\",\"msgType\":\"宣教推送消息\",\"isBroadcasting\":0,\"isGenerateAudio\":1,\"type\":3,\"onlyFlag\":\"PUSH-EDU-MSG\",\"remindRule\":\"[{\\\"time\\\":1},{\\\"time\\\":\\\"2\\\"}]\",\"content\":\"手术手术手术手术手术。\",\"broadcastName\":\"宣教推送消息\",\"eduID\":\"933bce53ba3645f89747351d9e193ce0,a6a04b9516c64876a438e4e38dfca609\",operationTime:\"2023-12-01 15:30:00\"}"
}

返回结果：

{
    "eventId": "7411c79dcd084812bef5fbd8262849de",
    "patientId": "patientId111",
    "content": "{\"reminderAudio\":\"/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3\",\"contentPath\":\"/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3\",\"msgType\":\"宣教推送消息\",\"isBroadcasting\":0,\"isGenerateAudio\":1,\"type\":3,\"onlyFlag\":\"PUSH-EDU-MSG\",\"remindRule\":\"[{\\\"time\\\":1},{\\\"time\\\":\\\"2\\\"}]\",\"content\":\"手术手术手术手术手术。\",\"broadcastName\":\"宣教推送消息\",\"eduID\":\"933bce53ba3645f89747351d9e193ce0,a6a04b9516c64876a438e4e38dfca609\",operationTime:\"2023-12-01 15:30:00\"}",
    "msgContentBody": {
        "reminderAudio": "/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3",
        "contentPath": "/resource/audio/edArticle/6f60e73abd0d47b4b679e823e1ec335a.mp3",
        "msgType": "宣教推送消息",
        "isBroadcasting": 0,
        "isGenerateAudio": 1,
        "type": 3,
        "onlyFlag": "PUSH-EDU-MSG",
        "remindRule": "[{\"time\":1},{\"time\":\"2\"}]",
        "content": "手术手术手术手术手术。",
        "broadcastName": "宣教推送消息",
        "eduID": "933bce53ba3645f89747351d9e193ce0,a6a04b9516c64876a438e4e38dfca609",
        "operationTime": "2023-12-01 15:30:00",
        "remindArray": [
            {
                "time": 1
            },
            {
                "time": "2"
            }
        ],
        "eduArray": [
            "933bce53ba3645f89747351d9e193ce0",
            "a6a04b9516c64876a438e4e38dfca609"
        ]
    },
    "eventProfessionType": "PUSH-EDU-MSG",
    "nowTime": "2023-11-30 11:30:24"
}

其中，将content解析为msgContentBody，content里面的remindRule解析为remindArray，eduID解析为eduArray

 

业务场景整体描述：

定义好多个消息规则，一群人中有人触发了规则，发一条消息，消息有重复提醒机制【remindRule】，触发的消息保存数据库。

重复提醒逻辑：

定时遍历这个数据库，修改【remindRule】，当【remindRule[0].time】变为0，则发消息再次提醒删除【remindRule[0]】，否则【remindRule[0].time-10】

【remindRule.length===0】说明重复提醒完毕，删除这条消息。

已读提醒逻辑：

【eduID】记录多个文章id，循环中根据文章id和人员id获取是否已读，已读则删除【eduID】中这条文章id

【eduID】变为空，说明阅读完成，没必要再次提醒，删除这条消息。