时序数据库influxDb工具类

package com.xinan.dataservice.util;

import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import okhttp3.OkHttpClient;
import org.apache.commons.lang3.StringUtils;
import org.influxdb.InfluxDB;
import org.influxdb.InfluxDBFactory;
import org.influxdb.dto.Query;
import org.influxdb.dto.QueryResult;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.*;
import java.util.concurrent.TimeUnit;


@Data
@Slf4j
public class InfluxDbUtils {
    private String userName;
    private String password;
    private String url;
    public String database;
    private String retentionPolicy;
    /**
     * InfluxDB实例
     */
    private InfluxDB influxDb;
    static OkHttpClient.Builder client = new OkHttpClient.Builder()
            .readTimeout(100, TimeUnit.SECONDS);

    public InfluxDbUtils(String userName, String password, String url, String database,
                         String retentionPolicy) {
        this.userName = userName;
        this.password = password;
        this.url = url;
        this.database = database;
        this.retentionPolicy = retentionPolicy == null || "".equals(retentionPolicy) ? "autogen" : retentionPolicy;
        this.influxDb = influxDbBuild();
    }

    /**
     * 连接数据库
     *
     * @return influxDb实例
     */
    private InfluxDB influxDbBuild() {
        if (influxDb == null) {
            influxDb = InfluxDBFactory.connect(url, userName, password, client);
        }
        influxDb.setDatabase(database);
        influxDb.setLogLevel(InfluxDB.LogLevel.BASIC);
        return influxDb;
    }

    public InfluxDB getInfluxDb(){
        return this.influxDb;
    }

    //单条查询语句封装
    /**
     *
     * @param influxDb 数据库实例
     * @param database 数据库名字
     * @param commond  单条sql语句
     * @return 查询结果
     */
    public  static List