原创：转载请注明出处

1、获取当天结束日期

/**     * author:GaoFei     * date:2017-01-09     * what:根据string日期获得当天结束时间     *     * @param dateString     * @return stringDate     */    private String provideDayForEndTime(String dateString){        if(dateString == null){
   return null;}        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);        Date currDate = null;        try {            currDate = sdf.parse(dateString);        } catch (ParseException e) {            e.printStackTrace();        }        Calendar start = Calendar.getInstance();        start.setTime(currDate);        start.set(Calendar.HOUR, 0);        start.set(Calendar.MINUTE, 0);        start.set(Calendar.SECOND, 0);        Calendar end = Calendar.getInstance();        end.setTime(start.getTime());        end.set(Calendar.HOUR,23);        end.set(Calendar.MINUTE,59);        end.set(Calendar.SECOND,59);        return TimeUtil.setSolrDate(end.getTime().toLocaleString());    }

2、获得时间戳的前一天截止时间点

/**     * 获得时间戳的前一天时间     */    public static Timestamp getTimeStampBefore(Timestamp timeStamp) {        Date date;        date = new Date(timeStamp.getTime());        if(date == null) {            return null;        }        long dateLong = date.getTime() - 24 * 60 * 60 * 1000;        Date date2 = new Date(dateLong);        int hourAmPm;        if(date2.getHours()<12){            hourAmPm = 23;        }else{            hourAmPm = 11;        }        Calendar start = Calendar.getInstance();        start.setTime(date2);        start.set(Calendar.HOUR, hourAmPm);        start.set(Calendar.MINUTE, 59);        start.set(Calendar.SECOND, 59);        return new Timestamp(start.getTime().getTime());    }

3、获得solr时区错误转换时间

/**     * author:GaoFei     * date:2016-12-21     * what:将字符串时间格式进行转换:Tue Dec 20 04:14:33 CST 2016 转换成 2016-12-21     *     * @param dateStr     * @return     */    public static String getSolrDateString(String dateStr) {        if(dateStr == null){
   return null;}//        SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", Locale.US);        SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", Locale.ENGLISH);        Date date = null;        try {            date = sdf.parse(dateStr);            long dateLong = date.getTime() - 8*60*60*1000;            date = new Date(dateLong);        } catch (ParseException e) {            e.printStackTrace();        }//        String formatStr = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(dateStr);        String formatStr2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date);        return formatStr2;    }

4、将时间戳转换成solr时间

/**     * author:Gao

/**     * 将solr时间转为字符串时间     *     * @param date     * @return     */    public static String solrDateToNormalDate(String date) {        if (date == null) {            return date;        }        try {            date = date.replace("T"," ");            date = date.replace("Z","");        } catch (Exception e) {            e.printStackTrace();            return date;        }        return date;    }

 

Fei     * date:2016-12-26     * 将时间戳转为solr时间     * @param timestamp     * @return     */    public static String getSolrDate(Timestamp timestamp) {        if (timestamp == null) {            return null;        }        String[] dates = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(timestamp).split(" ");        if (dates.length < 2) {            return null;        }        return dates[0] + "T" + dates[1] + "Z";    }