根据开始时间结束时间，计算工作日的天数

整理了一下，感觉第三方的接口不是很稳定，欢迎提供新的接口地址

  

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

/**
 * @author: DevanYan
 * @create: 2019-06-10 10:52
 */

//工作时长计算工具
public class WorkDayUtil {



    private static final String API_URL = "http://api.goseek.cn/Tools/holiday?date=";
    private static final int  WORK_STARK = 9;
    private static final int  WORK_STOP = 18;

    /**
     *
     * @param beginDateTime 开始时间
     * @param endDateTime 结束时间
     * @return 时长(单位:天,最小计数单位:0.5)
     */
    public static double workDays(LocalDateTime beginDateTime,LocalDateTime endDateTime){

        double workDays = 0;
        LocalDate beginDate = LocalDate.of(beginDateTime.getYear(),beginDateTime.getMonth(),beginDateTime.getDayOfMonth());
        LocalDate endDate = LocalDate.of(endDateTime.getYear(),endDateTime.getMonth(),endDateTime.getDayOfMonth());
        Long days =Math.abs(beginDate.toEpochDay()-endDate.toEpochDay());

        int beginHour = Integer.valueOf(beginDateTime.format(DateTimeFormatter.ofPattern("HH")));
        int endHour = Integer.valueOf(endDateTime.format(DateTimeFormatter.ofPattern("HH")));

        if( beginDate.toString().equals(endDate.toString()) ){//同一天
            if(WorkDayUtil.isWorkDay(beginDate)){
                if( ( beginHour>= WORK_STARK && endHour >= WORK_STARK && beginHour <= 12 && endHour <= 12) || ( beginHour > 12 && endHour > 12 && beginHour <= WORK_STOP && endHour <= WORK_STOP) ){
                    workDays = 0.5;
                }else{
                    workDays = 1;
                }
            }else{
                workDays = 0;
            }

        }else{//跨天
            LocalDate dealDate = beginDate;
            for(int i = 0;i<days-1;i++){
                dealDate = dealDate.minusDays(-1);
                if(WorkDayUtil.isWorkDay(dealDate)){
                    workDays++;
                }
            }
            //第一天
            if(WorkDayUtil.isWorkDay(beginDate)){
               if(beginHour>12 ){
                   if(beginHour <= WORK_STOP){
                       workDays = workDays + 0.5;
                   }
               }else{
                   workDays ++;
               }
            }
            //末天
            if(WorkDayUtil.isWorkDay(endDate)){
                if(endHour <= 12){
                    workDays = workDays + 0.5;
                }else{
                    workDays ++;
                }
            }
        }
        return workDays;
    }


    public static boolean isWorkDay(LocalDate date){
        String dayStr = date.format(DateTimeFormatter.ofPattern("yyyyMMdd"));
        int flag = WorkDayUtil.apiGet(dayStr);
        if(flag == 0 || flag == 2){
            return true;
        }
        return false;
    }

    /**
     * @param dateStr
     * @return 正常工作日对应结果为 0, 法定节假日对应结果为 1, 节假日调休补班对应的结果为 2，休息日对应结果为 3
     */
    public static int apiGet( String dateStr) {
        String httpUrl= API_URL + dateStr;
        BufferedReader reader = null;
        String result = null;
        StringBuffer sbf = new StringBuffer();
        int d = 0;
        try {
            URL url = new URL(httpUrl);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            InputStream is = connection.getInputStream();
            reader = new BufferedReader(new InputStreamReader(is, "UTF-8"));String strRead = null;
            while ((strRead = reader.readLine()) != null) {
                sbf.append(strRead);
            }
            reader.close();
            result = sbf.toString();
            result = result.trim();
            System.out.println(result);
            if(result.indexOf("10000")!=-1){
                result = result.substring(result.indexOf(":")+1);
                result = result.substring(result.indexOf(":")+1);
                result = result.substring(0,result.length()-1);
                d = Integer.valueOf(result);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return d;
    }

    public static void main(String[] args) {
        LocalDateTime begin = LocalDateTime.parse("2019-06-01 09:00:00",DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        LocalDateTime end = LocalDateTime.parse("2019-06-14 11:00:00",DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
        System.out.println("工作日："+WorkDayUtil.workDays(begin,end) +"天");

    }



}