jsfjsf-1.2jboss-seam

ConvertDateTime does not get timezone defined in web.xml

I'm using f:convertDateTime to format a dateTime in a datatable. I set the following context parameter in web.xml to explicitly set the timezone to system timezone:

<context-param>
    <param-name>javax.faces.DATETIMECONVERTER_DEFAULT_TIMEZONE_IS_SYSTEM_TIMEZONE</param-name>
    <param-value>true</param-value>
</context-param>

For some reason my convertDateTime gets "GMT" always, but the correct timezone is "GMT-03:00". I tried this in a test class to see my timezone: 

System.out.println(TimeZone.getDefault().getDisplayName());

which gives me "GMT-03:00".

I'm using JSF 1.2 and JBoss Seam 2.2, the jboss-seam DateTimeConverter is called to make this conversion, I don't know if this is the problem.

Solution

  • I'm using JSF 1.2

    The mentioned context param is introduced in JSF 2.0. It's not available in JSF 1.x. See also a.o. Set a default time zone for f:convertDateTime. In other words, it's simply never used. Remove it to avoid confusion.

    You've 2 options:

    1. Explicitly specify timeZone in every <f:convertDateTime>.

      <h:xxx ...>
    <f:convertDateTime ... timeZone="GMT-3" />
</h:xxx>

      If necessary as application scoped bean property.

      <h:xxx ...>
    <f:convertDateTime ... timeZone="#{config.timeZone}" />
</h:xxx>

    2. Extend the date time converter with a new default time zone (and other properties).

      public class DefaultDateTimeConverter extends DateTimeConverter {

    public DefaultDateTimeConverter() {
        setType("both");
        setTimeZone(TimeZone.getTimeZone("GMT-3"));
    }

}


      <converter>
    <converter-id>defaultDateTimeConverter</converter-id>
    <converter-class>com.example.DefaultDateTimeConverter</converter-class>
</converter>

      And then replace <f:convertDateTime> with it.

      <h:xxx ... converter="defaultDateTimeConverter" />