怎么通过XMLGregorianCalendar获得当前时间及当前时间的前十分钟的时间 ,就是获取两个时间点?
javax.xml.datatype.XMLGregorianCalendar call;
try {
call = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar();
System.out.println(call.toString());
javax.xml.datatype.Duration duration= javax.xml.datatype.DatatypeFactory.newInstance().newDuration(-600000) ;
call.add(duration);
System.out.println(call.toString());
} catch (DatatypeConfigurationException e)
{
e.printStackTrace();
}这是结果 这个结果貌似不是当前的日期,错在哪里??
0111-11-02T14:17:21
0111-11-01T14:17:21.000
javax.xml.datatype.XMLGregorianCalendar call;
try {
call = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar();
System.out.println(call.toString());
javax.xml.datatype.Duration duration= javax.xml.datatype.DatatypeFactory.newInstance().newDuration(-600000) ;
call.add(duration);
System.out.println(call.toString());
} catch (DatatypeConfigurationException e)
{
e.printStackTrace();
}这是结果 这个结果貌似不是当前的日期,错在哪里??
0111-11-02T14:17:21
0111-11-01T14:17:21.000
public static XMLGregorianCalendar asXMLGregorianCalendar(java.util.Date date) {
if (date == null) {
return null;
} else {
GregorianCalendar gc = new GregorianCalendar();
gc.setTimeInMillis(date.getTime());
return df.newXMLGregorianCalendar(gc);
}
}或者
public static XMLGregorianCalendar toXmlGregorianCalendar(final long date) {
try {
final GregorianCalendar calendar = new GregorianCalendar();
calendar.setTimeInMillis(date);
return DatatypeFactory.newInstance().newXMLGregorianCalendar(
calendar);
}
catch (final DatatypeConfigurationException ex) {
System.out.println("Unable to convert date '%s' to an XMLGregorianCalendar object");
}
}通过Date等来转
javax.xml.datatype.XMLGregorianCalendar dateType = javax.xml.datatype.DatatypeFactory.newInstance().newXMLGregorianCalendar();
我直接这么获得就报错了这是为什么呀
Representation for W3C XML Schema 1.0 date/time datatypes. Specifically, these date/time datatypes are DatatypeConstants.DATETIME, DatatypeConstants.TIME, DatatypeConstants.DATE, DatatypeConstants.GYEARMONTH, DatatypeConstants.GMONTHDAY, DatatypeConstants.GYEAR, DatatypeConstants.GMONTH, and DatatypeConstants.GDAY defined in the XML Namespace "http://www.w3.org/2001/XMLSchema". These datatypes are normatively defined in W3C XML Schema 1.0 Part 2, Section 3.2.7-14.因为无参方法是没有意义值的
public abstract XMLGregorianCalendar newXMLGregorianCalendar()
Create a new instance of an XMLGregorianCalendar.All date/time datatype fields set to DatatypeConstants.FIELD_UNDEFINED or null.
Returns:
New XMLGregorianCalendar with all date/time datatype fields set to DatatypeConstants.FIELD_UNDEFINED or null.Canlendar可以通过对应的域相减,通过milliseconds也可以直接减等等
// dateNow.add(duration);这两句就可以改变时间点了 嘎嘎