package cn.stylefeng.guns.plcserver.tool;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.GregorianCalendar;
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public class DateTool {
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public static String getLocalTime() {
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Date date = new Date();
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SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
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String localTime = formatter.format(date);
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return localTime;
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}
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public static Date getLocalTimeForDate() {
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//创建SimpleDateFormat对象实例并定义好转换格式
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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Date date = new Date();
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try {
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String localTime = sdf.format(date);
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// 注意格式需要与上面一致，不然会出现异常
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date = sdf.parse(localTime);
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} catch (ParseException e) {
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e.printStackTrace();
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}
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return date;
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}
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public static Calendar getCalendar(Date date) {
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Calendar cal = Calendar.getInstance();
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cal.setTime(date);
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return cal;
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}
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public static String getCurrentDate(String pattern) {
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Date date = new Date();
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String s = dateToStr(date, pattern);
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return s;
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}
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public static Date parseDate(String source) {
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if ((source == null) || (source.length() == 0)) {
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return null;
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}
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String[] datePattern = { "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd", "HH:mm:ss" };
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Date date = null;
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for (int i = 0; i < datePattern.length; i++) {
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date = parseDate(source, datePattern[i]);
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if (date != null) {
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break;
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}
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}
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return date;
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}
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public static Calendar parseCal(String source) {
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if ((source == null) || (source.length() == 0)) {
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return null;
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}
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String[] datePattern = { "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd", "HH:mm:ss" };
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Calendar date = null;
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for (int i = 0; i < datePattern.length; i++) {
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date = parseCal(source, datePattern[i]);
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if (date != null) {
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break;
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}
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}
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return date;
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}
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public static Date parseDate(String dateStr, String format) {
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SimpleDateFormat dateFormat = new SimpleDateFormat(format);
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Date date = null;
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try {
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date = dateFormat.parse(dateStr);
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} catch (ParseException localParseException) {
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}
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return date;
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}
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public static Calendar parseCal(String dateStr, String format) {
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SimpleDateFormat dateFormat = new SimpleDateFormat(format);
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Calendar date = Calendar.getInstance();
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try {
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date.setTime(dateFormat.parse(dateStr));
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} catch (ParseException localParseException) {
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}
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return date;
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}
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public static int diffDate(Date end, Date start) {
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return (int) (getMillis(end) / 86400000L - getMillis(start) / 86400000L);
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}
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public static long diffSecond(Date end, Date start) {
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return (getMillis(end) - getMillis(start)) / 1000L;
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}
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private static long getMillis(Date date) {
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Calendar c = Calendar.getInstance();
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c.setTime(date);
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return c.getTimeInMillis();
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}
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public static String getNow() {
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Date now = new Date();
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return formatDateTime(now);
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}
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public static String getNow(String pattern) {
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Date now = new Date();
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return formatDate(now, pattern);
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}
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public static String formatDate(String dateStr, String pattern) {
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Date date = parseDate(dateStr);
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return formatDate(date, pattern);
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}
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public static String formatTime(Date date) {
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String pattern = "HH:mm:ss";
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return formatDate(date, pattern);
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}
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public static String formatDate(Date date) {
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String pattern = "yyyy-MM-dd";
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return formatDate(date, pattern);
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}
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public static String formatDateTime(Date date) {
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String pattern = "yyyy-MM-dd HH:mm:ss";
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return formatDate(date, pattern);
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}
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public static String formatDateTime(Calendar cal) {
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String pattern = "yyyy-MM-dd HH:mm:ss";
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if (cal == null) {
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return "";
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}
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return formatDate(cal.getTime(), pattern);
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}
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public static String formatDate(Date date, String pattern) {
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String dateTimePattern = pattern;
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if (date == null) {
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if ((dateTimePattern.length() > 2)
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&& (dateTimePattern.substring(dateTimePattern.length() - 2).equals("_e"))) {
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dateTimePattern = dateTimePattern.replaceAll("(yy|YY){1,2}", " ");
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dateTimePattern = dateTimePattern.replaceAll("(M){1,2}", " ");
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dateTimePattern = dateTimePattern.replaceAll("(d|D){1,2}", " ");
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dateTimePattern = dateTimePattern.replaceAll("(h|H){1,2}", " ");
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dateTimePattern = dateTimePattern.replaceAll("(m){1,2}", " ");
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dateTimePattern = dateTimePattern.replaceAll("(s|S){1,2}", " ");
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return dateTimePattern.substring(0, dateTimePattern.length() - 2);
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}
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return "";
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}
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if ((dateTimePattern.length() > 2) && (dateTimePattern.substring(dateTimePattern.length() - 2).equals("_e"))) {
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dateTimePattern = dateTimePattern.substring(0, dateTimePattern.length() - 2);
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}
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if ((dateTimePattern == null) || (dateTimePattern.length() == 0)) {
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return formatDateTime(date);
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}
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SimpleDateFormat sdf = new SimpleDateFormat();
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try {
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sdf.applyPattern(dateTimePattern);
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} catch (IllegalArgumentException exp) {
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sdf.applyPattern("yyyy-MM-dd HH:mm:ss");
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}
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return sdf.format(date);
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}
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public static int getCurrYear() {
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Calendar cal = Calendar.getInstance();
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return cal.get(1);
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}
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public static int getCurrMonth() {
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Calendar cal = Calendar.getInstance();
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return cal.get(2) + 1;
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}
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public static String getCurrtWeekDay() {
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Date date = new Date();
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String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
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Calendar cal = Calendar.getInstance();
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cal.setTime(date);
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int w = cal.get(7) - 1;
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if (w < 0) {
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w = 0;
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}
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return weekDays[w];
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}
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public static int getCurrDay() {
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Calendar cal = Calendar.getInstance();
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return cal.get(5);
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}
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public static int getWeekOfYear(Date date) {
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Calendar c = new GregorianCalendar();
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c.setFirstDayOfWeek(2);
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c.setMinimalDaysInFirstWeek(7);
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c.setTime(date);
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return c.get(3);
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}
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public static int getWeekOfYear() {
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return getWeekOfYear(new Date());
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}
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public static int getMaxWeekNumOfYear(int year) {
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Calendar c = new GregorianCalendar();
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c.set(year, 11, 31, 23, 59, 59);
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return getWeekOfYear(c.getTime());
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}
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public static Date getFirstDayOfWeek(int year, int week) {
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Calendar c = new GregorianCalendar();
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c.set(1, year);
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c.set(2, 0);
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c.set(5, 1);
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Calendar cal = (GregorianCalendar) c.clone();
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cal.add(5, week * 7);
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return getFirstDayOfWeek(cal.getTime());
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}
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public static Date getLastDayOfWeek(int year, int week) {
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Calendar c = new GregorianCalendar();
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c.set(1, year);
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c.set(2, 0);
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c.set(5, 1);
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Calendar cal = (GregorianCalendar) c.clone();
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cal.add(5, week * 7);
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return getLastDayOfWeek(cal.getTime());
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}
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public static Date getFirstDayOfWeek(Date date) {
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Calendar c = new GregorianCalendar();
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c.setFirstDayOfWeek(2);
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c.setTime(date);
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c.set(7, c.getFirstDayOfWeek());
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return c.getTime();
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}
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public static Date getLastDayOfWeek(Date date) {
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Calendar c = new GregorianCalendar();
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c.setFirstDayOfWeek(2);
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c.setTime(date);
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c.set(7, c.getFirstDayOfWeek() + 6);
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return c.getTime();
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}
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public static Date getFirstDayOfFirstWeek(int year, int month) {
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Calendar c = Calendar.getInstance();
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c.setFirstDayOfWeek(2);
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c.set(year, month, 1);
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c.set(8, 1);
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c.set(7, 2);
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return c.getTime();
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}
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public static Date getYesterday() {
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Calendar c = new GregorianCalendar();
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c.set(5, c.get(5) - 1);
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Date date = c.getTime();
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return date;
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}
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public static Date getTomorrow() {
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Calendar c = new GregorianCalendar();
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c.set(5, c.get(5) + 1);
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Date date = c.getTime();
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return date;
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}
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public static Date getPreMonth(Date date) {
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GregorianCalendar c = new GregorianCalendar();
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c.setTime(date);
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c.add(2, -1);
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return c.getTime();
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}
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public static int getDayCountByTwoDates(String strDate1, String strDate2) {
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int differ = 0;
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try {
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SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
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Date date1 = format.parse(strDate1);
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Date date2 = format.parse(strDate2);
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differ = (int) ((date1.getTime() - date2.getTime()) / 86400000L);
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} catch (Exception e) {
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differ = -1;
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}
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return differ;
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}
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public static String dateToStr(Date date, String pattern) {
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if (date == null) {
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return "";
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}
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String pat = pattern;
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if ((pat == null) || (pat.length() == 0)) {
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pat = "yyyy-MM-dd HH:mm:ss";
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}
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SimpleDateFormat sdf = new SimpleDateFormat(pat);
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return sdf.format(date);
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}
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public static Calendar addSeconds(Calendar cal, int amount) {
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Calendar cal2 = Calendar.getInstance();
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cal2.setTime(cal.getTime());
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cal2.add(13, amount);
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return cal2;
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}
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}
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