Parsing timestamp with timezone in java?

问题:

I'm trying to parse a string of format timestamp with timezone obtained from a DB. The String is as follows :

   SimpleDateFormat mdyFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSSSZ");

    SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy"); 
    Date d1 = mdyFormat.parse("2014-04-01 15:19:49.31146+05:30");

    String mdx = sdf.format(d1);

    System.out.println(mdx);

Problem is, I get an error saying :

Exception in thread "main" java.text.ParseException: Unparseable date: "2014-04-01 15:19:49.31146+05:30"
    at java.text.DateFormat.parse(DateFormat.java:357)
    at com.karthik.Timestampvalidate.main(Timestampvalidate.java:31)

Does anyone know how to fix this ?

回答1:

You need to use X instead of Z:

SimpleDateFormat mdyFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSSSSX");

See the javadoc for more info.

Note: only available in Java 7+.

回答2:

If you get to use the new JSR 310 date/time APIs in Java 8, you can use the XXX format to parse the timezone. You need three Xs to get the specific colon-separated offset that you're using.

DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSSSSXXX");
TemporalAccessor dateTime = formatter.parse("2014-04-01 15:19:49.31146+05:30");
// returns: {OffsetSeconds=19800},ISO resolved to 2014-04-01T15:19:49.311460