Parsing string to date: Illegal pattern character 'T'.

问题

I need to parse a string to date in java. My string has the following format:

2014-09-17T12:00:44.0000000Z

but java throws the following exception when trying to parse such format... java.lang.IllegalArgumentException: Illegal pattern character 'T'.

Any ideas on how to parse that?

Thank you!

回答1:

Given your input of 2014-09-17T12:00:44.0000000Z, it is not sufficient to escape the letter T only. You also have to handle the trailing Z. But be aware, this Z is NOT a literal, but has the meaning of UTC+00:00 timezone offset according to ISO-8601-standard. So escaping Z is NOT correct.

SimpleDateFormat handles this special char Z by pattern symbol X. So the final solution looks like:

 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSSSSSX");
 Date d = sdf.parse("2014-09-17T12:00:44.0000000Z");
 System.out.println(d); // output: Wed Sep 17 14:00:44 CEST 2014

Note that the different clock time is right for timezone CEST (toString() uses system timezone), and that the result is equivalent to UTC-time 12:00:44. Furthermore, I had to insert seven symbols S in order to correctly process your input which pretends to have precision down to 100ns (although Java pre 8 can only process milliseconds).

回答2:

You have to escape the 'T' character:

    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
    format.setTimeZone(TimeZone.getTimeZone("UTC"));
    Date parse = format.parse("2014-09-17T12:00:44.0000000Z");

Using Answer to: What is this date format? 2011-08-12T20:17:46.384Z

回答3:

Try this.

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class DateClass {
    public static void main(String[] args) throws ParseException {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
        Date d = sdf.parse("2014-09-17T12:00:44.0000000Z");
        System.out.println(d); //output Wed Sep 17 12:00:44 IST 2014
    }
}

来源：https://stackoverflow.com/questions/26398657/parsing-string-to-date-illegal-pattern-character-t

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java

string

date

simpledateformat