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2024-02-23 73bc0656dc15cd9cc95c6f4f51949ef0437088ce

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71e81e	1	package cn.stylefeng.guns.plcserver.tool;
懒	2
	3	import java.text.ParseException;
	4	import java.text.SimpleDateFormat;
	5	import java.util.Calendar;
	6	import java.util.Date;
	7	import java.util.GregorianCalendar;
	8
	9	public class DateTool {
	10
	11	public static String getLocalTime() {
	12	Date date = new Date();
	13	SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
	14	String localTime = formatter.format(date);
	15	return localTime;
	16	}
	17
	18	public static Date getLocalTimeForDate() {
	19	//创建SimpleDateFormat对象实例并定义好转换格式
	20	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	21
	22	Date date = new Date();
	23	try {
	24	String localTime = sdf.format(date);
	25	// 注意格式需要与上面一致，不然会出现异常
	26	date = sdf.parse(localTime);
	27	} catch (ParseException e) {
	28	e.printStackTrace();
	29	}
	30	return date;
	31	}
	32
	33	public static Calendar getCalendar(Date date) {
	34	Calendar cal = Calendar.getInstance();
	35	cal.setTime(date);
	36	return cal;
	37	}
	38
	39	public static String getCurrentDate(String pattern) {
	40	Date date = new Date();
	41
	42	String s = dateToStr(date, pattern);
	43	return s;
	44	}
	45
	46	public static Date parseDate(String source) {
	47	if ((source == null) \|\| (source.length() == 0)) {
	48	return null;
	49	}
	50	String[] datePattern = { "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd", "HH:mm:ss" };
	51	Date date = null;
	52	for (int i = 0; i < datePattern.length; i++) {
	53	date = parseDate(source, datePattern[i]);
	54	if (date != null) {
	55	break;
	56	}
	57	}
	58	return date;
	59	}
	60
	61	public static Calendar parseCal(String source) {
	62	if ((source == null) \|\| (source.length() == 0)) {
	63	return null;
	64	}
	65	String[] datePattern = { "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd", "HH:mm:ss" };
	66	Calendar date = null;
	67	for (int i = 0; i < datePattern.length; i++) {
	68	date = parseCal(source, datePattern[i]);
	69	if (date != null) {
	70	break;
	71	}
	72	}
	73	return date;
	74	}
	75
	76	public static Date parseDate(String dateStr, String format) {
	77	SimpleDateFormat dateFormat = new SimpleDateFormat(format);
	78	Date date = null;
	79	try {
	80	date = dateFormat.parse(dateStr);
	81	} catch (ParseException localParseException) {
	82	}
	83	return date;
	84	}
	85
	86	public static Calendar parseCal(String dateStr, String format) {
	87	SimpleDateFormat dateFormat = new SimpleDateFormat(format);
	88	Calendar date = Calendar.getInstance();
	89	try {
	90	date.setTime(dateFormat.parse(dateStr));
	91	} catch (ParseException localParseException) {
	92	}
	93	return date;
	94	}
	95
	96	public static int diffDate(Date end, Date start) {
	97	return (int) (getMillis(end) / 86400000L - getMillis(start) / 86400000L);
	98	}
	99
	100	public static long diffSecond(Date end, Date start) {
	101	return (getMillis(end) - getMillis(start)) / 1000L;
	102	}
	103
	104	private static long getMillis(Date date) {
	105	Calendar c = Calendar.getInstance();
	106	c.setTime(date);
	107	return c.getTimeInMillis();
	108	}
	109
	110	public static String getNow() {
	111	Date now = new Date();
	112	return formatDateTime(now);
	113	}
	114
	115	public static String getNow(String pattern) {
	116	Date now = new Date();
	117	return formatDate(now, pattern);
	118	}
	119
	120	public static String formatDate(String dateStr, String pattern) {
	121	Date date = parseDate(dateStr);
	122	return formatDate(date, pattern);
	123	}
	124
	125	public static String formatTime(Date date) {
	126	String pattern = "HH:mm:ss";
	127	return formatDate(date, pattern);
	128	}
	129
	130	public static String formatDate(Date date) {
	131	String pattern = "yyyy-MM-dd";
	132	return formatDate(date, pattern);
	133	}
	134
	135	public static String formatDateTime(Date date) {
	136	String pattern = "yyyy-MM-dd HH:mm:ss";
	137	return formatDate(date, pattern);
	138	}
	139
	140	public static String formatDateTime(Calendar cal) {
	141	String pattern = "yyyy-MM-dd HH:mm:ss";
	142	if (cal == null) {
	143	return "";
	144	}
	145	return formatDate(cal.getTime(), pattern);
	146	}
	147
	148	public static String formatDate(Date date, String pattern) {
	149	String dateTimePattern = pattern;
	150	if (date == null) {
	151	if ((dateTimePattern.length() > 2)
	152	&& (dateTimePattern.substring(dateTimePattern.length() - 2).equals("_e"))) {
	153	dateTimePattern = dateTimePattern.replaceAll("(yy\|YY){1,2}", " ");
	154	dateTimePattern = dateTimePattern.replaceAll("(M){1,2}", " ");
	155	dateTimePattern = dateTimePattern.replaceAll("(d\|D){1,2}", " ");
	156	dateTimePattern = dateTimePattern.replaceAll("(h\|H){1,2}", " ");
	157	dateTimePattern = dateTimePattern.replaceAll("(m){1,2}", " ");
	158	dateTimePattern = dateTimePattern.replaceAll("(s\|S){1,2}", " ");
	159
	160	return dateTimePattern.substring(0, dateTimePattern.length() - 2);
	161	}
	162	return "";
	163	}
	164	if ((dateTimePattern.length() > 2) && (dateTimePattern.substring(dateTimePattern.length() - 2).equals("_e"))) {
	165	dateTimePattern = dateTimePattern.substring(0, dateTimePattern.length() - 2);
	166	}
	167	if ((dateTimePattern == null) \|\| (dateTimePattern.length() == 0)) {
	168	return formatDateTime(date);
	169	}
	170	SimpleDateFormat sdf = new SimpleDateFormat();
	171	try {
	172	sdf.applyPattern(dateTimePattern);
	173	} catch (IllegalArgumentException exp) {
	174	sdf.applyPattern("yyyy-MM-dd HH:mm:ss");
	175	}
	176	return sdf.format(date);
	177	}
	178
	179	public static int getCurrYear() {
	180	Calendar cal = Calendar.getInstance();
	181	return cal.get(1);
	182	}
	183
	184	public static int getCurrMonth() {
	185	Calendar cal = Calendar.getInstance();
	186	return cal.get(2) + 1;
	187	}
	188
	189	public static String getCurrtWeekDay() {
	190	Date date = new Date();
	191	String[] weekDays = { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
	192	Calendar cal = Calendar.getInstance();
	193	cal.setTime(date);
	194	int w = cal.get(7) - 1;
	195	if (w < 0) {
	196	w = 0;
	197	}
	198	return weekDays[w];
	199	}
	200
	201	public static int getCurrDay() {
	202	Calendar cal = Calendar.getInstance();
	203	return cal.get(5);
	204	}
	205
	206	public static int getWeekOfYear(Date date) {
	207	Calendar c = new GregorianCalendar();
	208	c.setFirstDayOfWeek(2);
	209	c.setMinimalDaysInFirstWeek(7);
	210	c.setTime(date);
	211
	212	return c.get(3);
	213	}
	214
	215	public static int getWeekOfYear() {
	216	return getWeekOfYear(new Date());
	217	}
	218
	219	public static int getMaxWeekNumOfYear(int year) {
	220	Calendar c = new GregorianCalendar();
	221	c.set(year, 11, 31, 23, 59, 59);
	222
	223	return getWeekOfYear(c.getTime());
	224	}
	225
	226	public static Date getFirstDayOfWeek(int year, int week) {
	227	Calendar c = new GregorianCalendar();
	228	c.set(1, year);
	229	c.set(2, 0);
	230	c.set(5, 1);
	231
	232	Calendar cal = (GregorianCalendar) c.clone();
	233	cal.add(5, week * 7);
	234
	235	return getFirstDayOfWeek(cal.getTime());
	236	}
	237
	238	public static Date getLastDayOfWeek(int year, int week) {
	239	Calendar c = new GregorianCalendar();
	240	c.set(1, year);
	241	c.set(2, 0);
	242	c.set(5, 1);
	243
	244	Calendar cal = (GregorianCalendar) c.clone();
	245	cal.add(5, week * 7);
	246
	247	return getLastDayOfWeek(cal.getTime());
	248	}
	249
	250	public static Date getFirstDayOfWeek(Date date) {
	251	Calendar c = new GregorianCalendar();
	252	c.setFirstDayOfWeek(2);
	253	c.setTime(date);
	254	c.set(7, c.getFirstDayOfWeek());
	255	return c.getTime();
	256	}
	257
	258	public static Date getLastDayOfWeek(Date date) {
	259	Calendar c = new GregorianCalendar();
	260	c.setFirstDayOfWeek(2);
	261	c.setTime(date);
	262	c.set(7, c.getFirstDayOfWeek() + 6);
	263	return c.getTime();
	264	}
	265
	266	public static Date getFirstDayOfFirstWeek(int year, int month) {
	267	Calendar c = Calendar.getInstance();
	268	c.setFirstDayOfWeek(2);
	269	c.set(year, month, 1);
	270
	271	c.set(8, 1);
	272	c.set(7, 2);
	273
	274	return c.getTime();
	275	}
	276
	277	public static Date getYesterday() {
	278	Calendar c = new GregorianCalendar();
	279	c.set(5, c.get(5) - 1);
	280	Date date = c.getTime();
	281	return date;
	282	}
	283
	284	public static Date getTomorrow() {
	285	Calendar c = new GregorianCalendar();
	286	c.set(5, c.get(5) + 1);
	287	Date date = c.getTime();
	288	return date;
	289	}
	290
	291	public static Date getPreMonth(Date date) {
	292	GregorianCalendar c = new GregorianCalendar();
	293	c.setTime(date);
	294	c.add(2, -1);
	295	return c.getTime();
	296	}
	297
	298
	299	public static int getDayCountByTwoDates(String strDate1, String strDate2) {
	300	int differ = 0;
	301	try {
	302	SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
	303	Date date1 = format.parse(strDate1);
	304	Date date2 = format.parse(strDate2);
	305	differ = (int) ((date1.getTime() - date2.getTime()) / 86400000L);
	306	} catch (Exception e) {
	307	differ = -1;
	308	}
	309	return differ;
	310	}
	311
	312	public static String dateToStr(Date date, String pattern) {
	313	if (date == null) {
	314	return "";
	315	}
	316	String pat = pattern;
	317	if ((pat == null) \|\| (pat.length() == 0)) {
	318	pat = "yyyy-MM-dd HH:mm:ss";
	319	}
	320	SimpleDateFormat sdf = new SimpleDateFormat(pat);
	321
	322	return sdf.format(date);
	323	}
	324
	325	public static Calendar addSeconds(Calendar cal, int amount) {
	326	Calendar cal2 = Calendar.getInstance();
	327	cal2.setTime(cal.getTime());
	328	cal2.add(13, amount);
	329	return cal2;
	330	}
	331	}