2003-07-16T01:24:32Z这是什么时间格式，用java怎样获取这样的时间？r

这是标准的XML Schema的"日期型数据格式”

T是代表后面跟着“时间”。Z代表0时区，或者叫UTC统一时间。

国内常见于MS Office Excel电子表格XML中的时间格式。

Java用SimpleTimeFormat可以随意处理这样的时间文本

//我实现一个时钟窗口程序给你了，好让你更容易理解，希望对你有帮助。

import javaawt;

import javaawtevent;

import javautil;

//世界时钟

public class TimerTest {

public static void main(String[] args) {

new TimerTestFrame("世界时钟");

}

}

class TimerTestFrame extends Frame {

/

/

private static final long serialVersionUID = 1L;

public TimerTestFrame(String s) {

super(s);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

dispose();

Systemexit(0);

}

});

setLayout(new GridLayout(2, 6));

ClockCanvas clk1 = new ClockCanvas("北京", "GMT+8"); // 创建时钟

ClockCanvas clk2 = new ClockCanvas("巴黎", "GMT+2");

ClockCanvas clk3 = new ClockCanvas("华盛顿", "GMT-4");

ClockCanvas clk4 = new ClockCanvas("洛衫矶", "GMT-7");

ClockCanvas clk5 = new ClockCanvas("伦敦", "GMT+1");

ClockCanvas clk6 = new ClockCanvas("芝加哥", "GMT-5");

add(clk1);

add(clk2);

add(clk3);

add(clk4);

add(clk5);

add(clk6);

setSize(500, 350); // 设置框架宽高

setVisible(true);

}

}

class ClockCanvas extends Canvas implements Runnable {

/

/

private static final long serialVersionUID = 1L;

private int seconds = 0;

private String city;

private GregorianCalendar calendar;

Thread t;

public ClockCanvas(String c, String tz) {

city = c;

//也可以通过TimeZonesetTimeZone(String n)函数改变时区，n为时区参数名。

calendar = new GregorianCalendar(TimeZonegetTimeZone(tz));

t = new Thread(this);

tstart();

setSize(125, 125); // 设置画布大小

setBackground(Colorblack);

}

// 重写父类的方法绘制时钟图形

public void paint(Graphics g) {

Graphics2D g2d = (Graphics2D) g;

BasicStroke bstroke = new BasicStroke(20f);

g2dsetStroke(bstroke);

g2dsetColor(Colorgreen);

g2ddrawOval(0, 0, 100, 100);

bstroke = new BasicStroke(50f);

g2dsetStroke(bstroke);

g2ddrawLine(50, 0, 50, 5);

g2ddrawLine(0, 50, 5, 50);

g2ddrawLine(50, 95, 50, 98);

g2ddrawLine(95, 50, 98, 50);

double hourAngle = 2 MathPI (seconds - 3 60 60)

/ (12 60 60);

double minuteAngle = 2 MathPI (seconds - 15 60) / (60 60);

double secondAngle = 2 MathPI (seconds - 15) / (60);

bstroke = new BasicStroke(50f);

g2dsetStroke(bstroke);

g2ddrawLine(50, 50, 50 + (int) (30 Mathcos(hourAngle)),

50 + (int) (30 Mathsin(hourAngle)));

bstroke = new BasicStroke(30f);

g2dsetStroke(bstroke);

g2ddrawLine(50, 50, 50 + (int) (40 Mathcos(minuteAngle)),

50 + (int) (40 Mathsin(minuteAngle)));

bstroke = new BasicStroke(10f);

g2dsetStroke(bstroke);

g2ddrawLine(50, 50, 50 + (int) (45 Mathcos(secondAngle)),

50 + (int) (45 Mathsin(secondAngle)));

g2dsetColor(Colorred);

g2ddrawString(city, 35, 115);

}

public void timeElapsed() {

//new Date()获得当前时间

Systemoutprintln(new Date());

calendarsetTime(new Date());

seconds = calendarget(CalendarHOUR) 60 60

+ calendarget(CalendarMINUTE) 60

+ calendarget(CalendarSECOND);

}

public void run() {

try {

while (true) {

Threadsleep(300);

timeElapsed();

repaint();

}

} catch (InterruptedException e) {

}

}

}

PHP 的 time() 函数返回的结果是 Unix 时间戳，值的单位是秒；

Java 中 SystemcurrentTimeMillis()  返回的结果，值的单位是毫秒。

那么很容易就知道，除以 1000 就行了嘛：

123String date = "20151101095440";String reg = "(\\d{4})(\\d{2})(\\d{2})(\\d{2})(\\d{2})(\\d{2})";date = datereplaceAll(reg, "$1-$2-$3 $4:$5:$6")。

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