DAL-DAZHOU-JOIN-API/src/main/java/com/steerinfo/dil/util/DataChange.java

package com.steerinfo.dil.util;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * @ author    :TXF
 * @ time      :2021/8/25 11:25
 */

public class DataChange {


    /**
     * 解析前端传来的日期字符串
     * @param vueDate
     * @return
     */
    public static Date dataToDate(Object vueDate){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date parseDate = null;
        if (vueDate != null){
            try {
                String date = (String) vueDate;
                parseDate = sdf.parse(date);
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return parseDate;
    }

    /**
     * 数据转换成BigDecimal
     * @param data
     * @return
     */
    public static BigDecimal dataToBigDecimal(Object data){
        if (data != null){
            if(data instanceof BigDecimal){
                return (BigDecimal) data;
            }else{
                String str = String.valueOf(data);
                BigDecimal decimal = null;
                if(!"".equals(str)){
                    try {
                        decimal = new BigDecimal(str);
                    } catch (Exception e) {
                        e.printStackTrace();
                        return new BigDecimal(0);
                    }
                }
                return decimal;
            }
        }
        return new BigDecimal(0);
    }

    /**
     * 将时间截取到天  为字符串类型 用于前端只显示到天
     * @param date 传入时间
     * @return
     */
    public static String dateToDayDate(Object date){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date changeDate = null;
        if(date == null)
            return null;
        try{
             changeDate = (Date) date;
        }catch (Exception e){
            e.printStackTrace();
        }
        return sdf.format(changeDate);
    }

    /**
     * 遍历从数据库中传进来的数据
     * @param list 从数据库查询出来的list数据列表
     * @param key map中多个需要转换的date参数
     */
    public static void changeDateToDayDate(List<Map<String, Object>> list, String ...key){
        //遍历List
        for (Map<String, Object> map : list) {
            for (String s : key) {
                //从map中取 date的值 并转换成字符串类型的日期
                String stringDate = dateToDayDate(map.get(s));
                map.put(s, stringDate);
            }
        }
    }

    /**
     * 遍历列表使只显示两位小数
     * @param list
     * @param key
     */
    public static void dataTo2Number(List<Map<String, Object>> list, String ...key){
        //遍历List
        for (Map<String, Object> map : list) {
            for (String s : key) {
                //修改数据为带两位小数
                BigDecimal oldDate = (BigDecimal) map.get(s);
                DecimalFormat df =  new DecimalFormat("0.00");
                String resultDeduction = df.format(oldDate.doubleValue());
                map.put(s, resultDeduction);
            }
        }
    }

    /**
     * 计算相差时间  日时分秒
     * @param
     * @return
     */
    public static String calculatedTimeDifference(Date time1, Date time2){
        long t1 = time1.getTime();
        long t2 = time2.getTime();
        if(t1 > t2){
            long temp = t1;
            t1 = t2;
            t2 = temp;
        }
        long between = t2 - t1;
        long day = between / (24 * 60 * 60 * 1000);
        long hour = (between / (60 * 60 * 1000) - day * 24);
        long min = ((between / (60 * 1000)) - day * 24 * 60 - hour * 60);
        long s = (between / 1000 - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60);
        return day + "天"+  + hour+ "时" + min + "分"  + s + "秒";
    }

    /**
     * 生成带时间的八位数顺序号
     * @param start 前缀
     * @param id 顺序号  主键Id
     * @return
     */
    public static String generateEightDigitsNumber(String start, Integer id){
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
        StringBuilder sb = new StringBuilder(start + sdf.format(new Date()));
        sb.append(
                id < 10
                        ? "0000000" + id : id < 100
                        ? "000000" + id : id < 1000
                        ? "00000" + id : id < 10000
                        ? "0000" + id : id < 100000
                        ? "000" + id : id < 1000000
                        ? "00" + id : id < 10000000
                        ? "0" + id : id.toString()
        );
        return sb.toString();
    }

}