mysql_app/src/main/java/com/bfd/dataprocess/util/DataUtil.java

package com.bfd.dataprocess.util;

import java.util.Map;

import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.alibaba.fastjson2.JSONPath;
import com.bfd.dataprocess.config.Constant;
import lombok.extern.slf4j.Slf4j;


/**
 * @author:jinming
 * @className:DataUtil
 * @version:1.0
 * @description: 获取dataValue的值
 * @Date:2023/11/1 9:54
 */
@Slf4j
public class DataUtil {
    /**
     * @param key     传入的key
     * @param dataMap 数据map
     * @return 根据传入的参数进行判断解析，返回正确的dataValue
     */
    public static Object getValue(String key, Map dataMap) {
        try {
            //公式为空直接就返回
            if (key.equals(Constant.EMPTY)) {
                return Constant.EMPTY;
            }
            if (!key.contains(Constant.NOT_KEY)) {
                return key;
            }
            Object dataValue;
            String isJson = "#json#";
            if (key.contains(isJson)) {
                //进行第一次拆分，获取#json#前面的部分
                String[] keySplit = key.split(isJson);
                String firstDataKey = keySplit[0];
                String[] firstDataKeySplit = firstDataKey.split(":");
                //取出前半部分对应的JSON数据并转换为JSONObject
                String dataJson = (String) dataMap.get(firstDataKeySplit[0]);
                JSONObject dataJsonObject = JSON.parseObject(dataJson);
                //根据key的后半部分取出对应JSONObject中的值
                String firstDataKeyJson = (String) JSONPath.eval(dataJsonObject, firstDataKeySplit[1]);
                String secDataKey = keySplit[1];
                JSONObject firstDataJsonObject = JSON.parseObject(firstDataKeyJson);
                dataValue = JSONPath.eval(firstDataJsonObject, secDataKey);
                return dataValue;
            }
            String[] keySplit = key.split(":");
            String jsonPath = keySplit[1];
            String dataJson = (String) dataMap.get(keySplit[0]);
            JSONObject dataJsonObject = JSON.parseObject(dataJson);
            dataValue = JSONPath.eval(dataJsonObject, jsonPath);
            return dataValue;
        } catch (Exception e) {
            // TODO: handle exception
            log.error("jsonpath公式取值异常，", e);
            return null;
        }

    }
}