如何获取全年节假日信息以及计算当前日期属于第几周

1.某些业务场景需要获取全年哪些天是节假日还是非节假日 比如说出勤。

2.我介绍的这种方式是通过Api调用的方式，通过当前日期来查询是节假日还是非节假日

/Tools/holiday?date=" + 日期 data为0则是节假日，data为0 则是休息日 1为节假日

3.代码

package com.bos.test;import com.alibaba.fastjson.JSONObject;import mon.SplitTime;import com.bos.util.SendRequest;import java.text.SimpleDateFormat;import java.util.Date;import java.util.List;public class Test2 {public static void main(String[] args) {try {getAllHolidayDate();} catch (Exception e) {}}/*** 1.获取本年的第一天 获取本年最后一天* 2.遍历第一天到最后一天的数据，通过调用Api接口的方式获取当前是否为工作日** @throws Exception*/public static void getAllHolidayDate() throws Exception {SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");//获取本年第一天Date startDate = SplitTime.getCurrYearFirst();//获取本年最后一天Date endDate = SplitTime.getCurrYearLast();//遍历全年日期List<Date> lists = SplitTime.dateSplit(startDate, endDate);if (!lists.isEmpty()) {for (Date date : lists) {String currentDate = sdf.format(date);System.out.println("当前日期---" + currentDate);String url = "/Tools/holiday?date=" + currentDate;JSONObject dateTypes = SendRequest.sendGet2(url);String data = dateTypes.getString("data");if (data.equals("0")) {System.out.println("工作日");} else {System.out.println("非工作日");}//获取当前日期属于第几周int weekType = SplitTime.getCurrentDateBelongToWhatWeek(currentDate);System.out.println("当前日期属于第几周---" + weekType);}}}}

4.用来操作时间的类

package mon;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Calendar;import java.util.Date;import java.util.List;/*** 功能描述: 用来操作时间的类* @Author: tanghh18* @Date: /9/8 10:44*/public class SplitTime {/*** 用来计算俩个日期之前的天数* @param startDate* @param endDate* @return* @throws Exception*/public static List<Date> dateSplit(Date startDate, Date endDate)throws Exception {if (!startDate.before(endDate))throw new Exception("开始时间应该在结束时间之后");Long spi = endDate.getTime() - startDate.getTime();// 相隔天数Long step = spi / (24 * 60 * 60 * 1000);List<Date> dateList = new ArrayList<Date>();dateList.add(endDate);for (int i = 1; i <= step; i++) {// 比上一天减一dateList.add(new Date(dateList.get(i - 1).getTime()- (24 * 60 * 60 * 1000)));}return dateList;}/*** 获取当年的第一天* @return*/public static Date getCurrYearFirst(){Calendar currCal=Calendar.getInstance();int currentYear = currCal.get(Calendar.YEAR);return getYearFirst(currentYear);}/*** 获取某年第一天日期* @param year 年份* @return Date*/public static Date getYearFirst(int year){Calendar calendar = Calendar.getInstance();calendar.clear();calendar.set(Calendar.YEAR, year);Date currYearFirst = calendar.getTime();return currYearFirst;}/*** 获取当年的最后一天* @return*/public static Date getCurrYearLast(){Calendar currCal=Calendar.getInstance();int currentYear = currCal.get(Calendar.YEAR);return getYearLast(currentYear);}/*** 获取某年最后一天日期* @param year 年份* @return Date*/public static Date getYearLast(int year){Calendar calendar = Calendar.getInstance();calendar.clear();calendar.set(Calendar.YEAR, year);calendar.roll(Calendar.DAY_OF_YEAR, -1);Date currYearLast = calendar.getTime();return currYearLast;}/*** 获取当前日期属于第几周*/public static int getCurrentDateBelongToWhatWeek(String currentDate){int weekOfYear;try{SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");Date date = format.parse(currentDate);Calendar calendar = Calendar.getInstance();calendar.setFirstDayOfWeek(Calendar.MONDAY);calendar.setTime(date);weekOfYear = calendar.get(Calendar.WEEK_OF_YEAR);}catch (Exception e){return 0;}return weekOfYear;}}

5. SendGet2

public static JSONObject sendGet2(String url) {JSONObject jsonObject = null;StringBuffer sb = new StringBuffer();BufferedReader in = null;try {String urlName = url;URL realUrl = new URL(urlName);// 打开和URL之间的连接URLConnection conn = realUrl.openConnection();// 设置通用的请求属性conn.setRequestProperty("accept", "*/*");conn.setRequestProperty("connection", "Keep-Alive");conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");conn.setConnectTimeout(10000);// 建立实际的连接conn.connect();// 定义BufferedReader输入流来读取URL的响应in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF-8"));String line;while ((line = in.readLine()) != null) {sb.append(line);}jsonObject = JSON.parseObject(sb.toString());} catch (Exception e) {System.out.println("发送GET请求出现异常！" + e);// 使用finally块来关闭输入流} finally {try {if (in != null) {in.close();}} catch (IOException ex) {System.out.println("关闭流异常");}}return jsonObject;}