SimpleDateFormat抛出+0100的解析异常

Question

I am trying with two sets of date with date format :

DateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss");

It works fine for the Date : Fri, 26 Aug 2016 13:55:34 +0000

Not for the Date : Tue, 06 Sep 2016 11:57:14 +0100

Throws exception for the +0100 date.

 Unparseable date: "Tue, 06 Sep 2016 11:57:14 +0100" (at offset 0)
 at java.text.DateFormat.parse(DateFormat.java:555)

Answer 1

It fails at offset 0 , which means that the problem is not related to the timezone but to the day in letters .

You should set the Locale of your SimpleDateFormat .

    DateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss", Locale.ENGLISH);
    Date d1 = format.parse("Fri, 26 Aug 2016 13:55:34 +0000");
    Date d2 = format.parse("Tue, 06 Sep 2016 11:57:14 +0100");

Works without any problem.

If you also need to retrieve the timezone, you will also have to add z to your pattern:

    DateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.ENGLISH);

Answer 2

You need

new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z");

Note the z for the time zone.

The parser ignores the zero ( +0000 ) case if z is not supplied, but not a non-zero ( +0100 ) case. The lenient property controls this behaviour (Acknowledge @Marko Topolnik).

Since you're using English week names, you ought to use the two-argument constructor to SimpleDateFormat , passing Locale.ENGLISH as the second parameter.