- Tools descriptive sense
- Date of operation is the most typical, one of the most commonly used technique in the vast majority of projects in development will be involved, so the tool.
- Code
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/*
* 日期操作类
*/
public class DateUtil {
public static int dateStringLength = "yyyy-MM-dd HH:mm:ss".length();
public SimpleDateFormat yyyyMMddHHmmss = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
public SimpleDateFormat yyyyMMddHHmm = new SimpleDateFormat(
"yyyy-MM-dd HH:mm");
public static SimpleDateFormat yyyyMMdd = new SimpleDateFormat("yyyy-MM-dd");
public static SimpleDateFormat yyyyMMddHH_NOT_ = new SimpleDateFormat(
"yyyyMMdd");
public static long DATEMM = 24 * 60 * 60;
public static long getTimeNumberToday() {
Date date = new Date();
String str = yyyyMMdd.format(date);
try {
date = yyyyMMdd.parse(str);
return date.getTime() / 1000L;
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return 0;
}
public static String getTodateString() {
Date date = new Date();
String str = yyyyMMddHH_NOT_.format(date);
return str;
}
// 得到今天的如yyyy-MM-dd的形式
public static String getTodayFomatString() {
Date date = new Date();
String str = yyyyMMdd.format(date);
return str;
}
public static String getYesterdayString() {
Date date = new Date(System.currentTimeMillis() - DATEMM * 1000L);
String str = yyyyMMddHH_NOT_.format(date);
return str;
}
public static String getYesterdayStringByLine() {
Date date = new Date(System.currentTimeMillis() - DATEMM * 1000L);
String str = yyyyMMdd.format(date);
return str;
}
public static int getIntDate(String dateString) {
System.out.println("date string:" + dateString);
String[] str = dateString.split("-");
int all = 0;
try {
str[1] = ((Integer.parseInt(str[1])) < 10 ? ("0" + Integer
.parseInt(str[1])) : str[1]);
str[2] = ((Integer.parseInt(str[2])) < 10 ? ("0" + Integer
.parseInt(str[2])) : str[2]);
all = Integer.parseInt(str[0] + str[1] + str[2]);
} catch (Exception e) {
System.out.println("日期转化时出现错误!");
all = 99999999;
}
return all;
}
public static Date dd = null;
public static long getTimeLong(int years) {
dd = new Date();
dd.setYear(dd.getYear() + years);
// Timestamp now2 = new Timestamp(dd.getTime());
return dd.getTime();
}
public static long getLongByDate() {
return new Date().getTime();
}
public Date getDateByString(String date_str) throws Exception {
date_str = date_str.trim();
if (date_str.length() == dateStringLength && date_str.startsWith("20")) {
return yyyyMMddHHmmss.parse(date_str);
} else {
throw new Exception();
}
}
public String getStringByDate(Date date) throws Exception {
return yyyyMMddHHmmss.format(date);
}
String temp_time_string = null;
public String getPhpLongTime() {
temp_time_string = "" + new Date().getTime() + 30000;
// System.out.println(temp_time_string);
return temp_time_string.substring(0, temp_time_string.length() - 3);
}
public static long getTimeByLevel(int taskLevel) {
switch (taskLevel) {
case 1:
taskLevel = 10;
break;
case 2:
taskLevel = 30;
break;
case 3:
taskLevel = 120;
break;
case 4:
taskLevel = 240;
break;
case 5:
taskLevel = 1440;
break;
default:
taskLevel = 1440;
break;
}
return taskLevel * 60 * 1000;
}
String temp_time = null;
public Date getDateByNoneStruture4Sina(String publishTimeString)
throws ParseException {
if (publishTimeString.contains("\"")) {
publishTimeString = publishTimeString.trim().substring(1,
publishTimeString.trim().length() - 1);
}
if (publishTimeString.contains("月")) {
String temp_date = "" + (1900 + new Date().getYear());
temp_time = publishTimeString.substring(0,
publishTimeString.indexOf("月"));
if (temp_time.length() == 1) {
temp_time = "0" + temp_time;
}
temp_date = temp_date + "-" + temp_time;
temp_time = publishTimeString.substring(
publishTimeString.indexOf("月") + 1,
publishTimeString.indexOf("日"));
if (temp_time.length() == 1) {
temp_time = "0" + temp_time;
}
temp_date = temp_date + "-" + temp_time;
temp_time = publishTimeString.substring(
publishTimeString.indexOf(" ") + 1,
publishTimeString.length());
temp_date = temp_date + " " + temp_time + ":00";
// System.out.println("时间---"+temp_time);
// System.out.println("temp_date----"+temp_date);
return yyyyMMddHHmmss.parse(temp_date);
} else if (publishTimeString.contains("今天")) {
publishTimeString = publishTimeString.substring(
publishTimeString.indexOf(" "), publishTimeString.length())
.trim();
publishTimeString += ":00";
temp_time = yyyyMMddHHmmss.format(new Date());
temp_time = temp_time.substring(0, temp_time.indexOf(" "));
publishTimeString = temp_time + " " + publishTimeString;
return yyyyMMddHHmmss.parse(publishTimeString);
} else if (publishTimeString.contains("分钟")) {
temp_time = publishTimeString.substring(0,
publishTimeString.indexOf('分'));
// 通过化成ms后的相减操作来完成减多少minutes的操作
return new Date(getLongByDate() - Integer.parseInt(temp_time) * 60
* 1000);
} else if (publishTimeString.contains("-")) {
String temp_all = null;
if (publishTimeString.length() == "yyyy-mm-dd hh:mm".length()) {
publishTimeString = publishTimeString + ":00";
return yyyyMMddHHmmss.parse(publishTimeString);
} else {
temp_time = publishTimeString.split(" ")[0];
String[] temp_array = temp_time.split("-");
for (String temp : temp_array) {
if (temp.length() == 4) {
temp_all = temp;
} else if (temp.length() == 1) {
temp_all += ("-0" + temp);
} else {
temp_all += ("-" + temp);
}
}
temp_all += " " + publishTimeString.split(" ")[1] + ":00";
}
return yyyyMMddHHmmss.parse(temp_all);
} else if (publishTimeString.contains("秒")) {
return new Date();
} else {
return new Date();
}
}
// 对新闻网页中的时间进行转换
public Date getDateByNoneStructure4News(String publish_time_string)
throws Exception {
if (StringOperatorUtil.isBlank(publish_time_string)) {
return null;
}
// 去除所有空白字符为空格 ，最后再做trim()
publish_time_string = publish_time_string.replaceAll("[\\s]+"," ");
publish_time_string = publish_time_string.replaceAll("：", ":");
publish_time_string = publish_time_string.trim();
String format_publish_time_string = formatWebDateString(publish_time_string);
// System.out.println(format_publish_time_string);
/**
* 首先确定该串符合哪种模板
*/
if (format_publish_time_string != null) {// 说明匹配上模板了,都转化成yyyy-MM-dd
if (format_publish_time_string
.matches("\\d{4,4}-\\d{2,2}-\\d{2,2}\\s\\d{2,2}:\\d{2,2}:\\d{2,2}")) {
return yyyyMMddHHmmss.parse(format_publish_time_string);
}
} else if (publish_time_string.matches("\\d{1,2}[\\s]*小时前")) {
// 匹配百度中的几小时前
publish_time_string = publish_time_string.replace("小时前", "").trim();
try {
return new Date(getLongByDate()
- Integer.parseInt(publish_time_string) * 60 * 60
* 1000);
} catch (Exception e) {
e.printStackTrace();
}
} else if (publish_time_string.matches("\\d{1,2}[\\s]*分钟前")) {
// 匹配百度中的几分钟前
publish_time_string = publish_time_string.replace("分钟前", "").trim();
try {
return new Date(getLongByDate()
- Integer.parseInt(publish_time_string) * 60 * 1000);
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
// 为网页版日期时间解析而添加
public String checkFormat4DatePart(String part) {
return part.length() == 1 ? "0" + part : part;
}
public String formatWebDateString(String dateString) {
dateString = dateString.replaceAll("[年月/\\.]", "-");
dateString = dateString.replaceAll("日[\\s]*", " ");
dateString = dateString
.replaceAll("今天", DateUtil.getTodayFomatString());
dateString = dateString.replaceAll("昨天", DateUtil.getYesterdayStringByLine());
// dateString=dateString.trim();
String[] arr = dateString.split("[\\-:\\s]");
int len = arr.length;
if (len >= 3) {
if (len == 3) {
// 说明只有日期部分或时间部分
if (dateString.contains("-")) {// 说明是日期格式
// 对年份的处理
if (arr[0].length() == 2) {
arr[0] = "20" + arr[0];
}
arr[1] = checkFormat4DatePart(arr[1]);
arr[2] = checkFormat4DatePart(arr[2]);
return arr[0] + "-" + arr[1] + "-" + arr[2] + " "
+ "00:00:00";
} else {// 说明是时间格式
arr[0] = checkFormat4DatePart(arr[0]);
arr[1] = checkFormat4DatePart(arr[1]);
arr[2] = checkFormat4DatePart(arr[2]);
return DateUtil.getTodayFomatString() + " " + "00:00:00";
}
} else if (len == 5) {
// 对年份的处理
if (arr[0].length() == 2) {
arr[0] = "20" + arr[0];
}
// 说明包括日期和时间两部分
arr[1] = checkFormat4DatePart(arr[1]);
arr[2] = checkFormat4DatePart(arr[2]);
arr[3] = checkFormat4DatePart(arr[3]);
arr[4] = checkFormat4DatePart(arr[4]);
return arr[0] + "-" + arr[1] + "-" + arr[2] + " " + arr[3]
+ ":" + arr[4] + ":00";
} else if (len == 6) {
// 对年份的处理
if (arr[0].length() == 2) {
arr[0] = "20" + arr[0];
}
// 说明包括日期和时间两部分
arr[1] = checkFormat4DatePart(arr[1]);
arr[2] = checkFormat4DatePart(arr[2]);
arr[3] = checkFormat4DatePart(arr[3]);
arr[4] = checkFormat4DatePart(arr[4]);
arr[5] = checkFormat4DatePart(arr[5]);
return arr[0] + "-" + arr[1] + "-" + arr[2] + " " + arr[3]
+ ":" + arr[4] + ":" + arr[5];
}
}
return null;
}
public static void main(String[] args) throws Exception {
// String date_str = "2013-03-12 11:33:5";
DateUtil dateUtil = new DateUtil();
/**
* 取得分钟前的数字
*/
// String minutes = date_str.substring(0, date_str.indexOf('分'));
// System.out.println("minutes---" + minutes);
// String publishTimeString = "(2012-12-31 16:19) ";
// System.out.println("publishTimeString---"
// + dateUtil.getDateByNoneStruture4Sina(publishTimeString));
//
// System.out.println("time long----" + new Date().getTime());
// System.out.println(getTodateString());
// String publis_time_String = "2015年03月01日15:00";
// String publis_time_String = "2015-03-01 08:58";
// String publis_time_String = "2015-03-01 10:58:42";
// String publish_time_String = "今天 08:28";
// String publish_time_String = "昨天 08:28";
String publish_time_String = "2017-08-25 18:22:00";
Date date = dateUtil.getDateByNoneStructure4News(publish_time_String);
System.out.println(date);
}
}
Dawn education is engaged in big data cloud computing, artificial intelligence, education and training, product development, consulting services, talent preferably integrated Internet technology companies.
Founded by a group of front-line Internet BAT, IT elite,
with "happy work, serious life, to build IT vocational education banner" for the vision, the vision of "Let the world not difficult to find work," the mission,
adhere to the "customer first , integrity, passion, embrace change "values,
dedication to students energized and efficiency, practice techniques to change the fate of early heart.
More study and discussion, please join
the official - dawn big data exchange QQ group -366,784,928
group of two-dimensional code:
official - dawn web front-end exchange QQ group -972,788,995
group of two-dimensional code:
Welcome concern dawn to educate the public number, big data and technical information courses, recruitment and employment trends, educational information dynamic, entrepreneurial history to share a one-stop-sharing, public official micro-channel two-dimensional code number:
Reptile, nlp techniques qq group 320 349 384
hadoop Hive & the Spark & Technology Group 297 585 251
Education and Training's official website: http://myhope365.com
project development business still cloud technology official website: http://shangyuninfo.com/
dawn open class education - from white to Gangster Xiu mind - a full range of video address: http://myhope365.com/news/index?id=66
dawn cloud classroom applet version, under the micro-channel scan code map and direct access to learning! ! !
