My date field is one text box with a Date Picker Widget. The
converter does the valid date validation for me by attempting to parse
the date in the Util class. If it returns null then I know I got a
parse exception.
I am including my convertFromString code below. I need it to handle
both single dates and an array of dates. My form always has a date
range, plus N number of date ranges to select. I wrote it to work for
both. Any criticisms or questions about the code are welcomed.
public Object convertFromString(Map context, String[] values, Class
toClass) throws TypeConversionException {
ArrayList<Date> dates = new ArrayList<Date>();
Date returnDates[] = null;
if (toClass == Date.class ||
toClass == Date[].class) {
StrutsRequestWrapper srw = (StrutsRequestWrapper)
context.get("com.opensymphony.xwork2.dispatcher.HttpServletRequest");
User u = (User)
srw.getSession().getAttribute(Constants.USER_SESSION_KEY);
Util util = new Util();
for (int i = 0; i < values.length; i++) {
if (values[i].trim().length() > 0) { //all date ranges
are submitted even if they are empty
Date tmpDate = util.parseDate(values[i], u.getDateFormat());
dates.add(tmpDate);
if (tmpDate == null) { //parsing failed
throw new TypeConversionException("Could not
parse date [" + values[i] + "] using format [" + u.getDateFormat() +
"]");
}
}
}
returnDates = dates.toArray(new Date[0]);
}
if (returnDates.length > 1) {
return returnDates;
}
return returnDates[0];
}
On Fri, May 1, 2009 at 12:32 PM, Andy Sykes <a.sy...@ucl.ac.uk> wrote:
> I wrote my own method based on having three select dropdown boxes for the
> date - day, month and year.
>
> Rather than do it as a type converter, I did it as an interceptor, with
> three getters/setters in the action (getStartTime_Day, getStartTime_Month,
> getStartTime_Year). The interceptor uses reflection when it encounters a
> Date setter (with a suitable annotation) in the action to look up these
> fields and parse them into a Date for setting. Lets me do validation at the
> same time.
>
> Andy.
>
> On 1 May 2009, at 12:44, Richard Sayre wrote:
>
>> I think I am going to write my own. After experimenting with the date
>> time picker it only seems to convert the date if its in this format
>> mm/dd/yy. In my application the user can choose their own date format.
>> When I have a format like 1 May 2009, the datetime picker value does
>> not get converted. It is expecting to set a String instead of a Date.
>> I am still trying to get my own converter to work right. If I get
>> something written I will share it with the group.
>>
>>
>>
>> On Thu, Apr 30, 2009 at 10:19 PM, Zoran Avtarovski
>> <zo...@sparecreative.com> wrote:
>>>
>>> That¹s exactly right but sometimes you want to use a format that isn¹t
>>> the
>>> short format for the locale and I suspect that¹s what is happening with
>>> Richard.
>>>
>>> He has two choices, either configure his date time picker to produce the
>>> date in the required format, or as suggested write your own converter. My
>>> only concern with Matt¹s version is that the conversion exception is
>>> buried
>>> which will have implications for validation.
>>>
>>> Z.
>>>
>>>
>>>>
>>>> Hi Richard,
>>>>
>>>> Have a look at http://struts.apache.org/2.1.6/docs/type-conversion.html
>>>> It says that "dates - uses the SHORT format for the Locale associated
>>>> with the
>>>> current request"
>>>>
>>>> May be this will help.
>>>>
>>>> Thank you.
>>>> Regards,
>>>> Kishan.G
>>>>
>>>> Senior Software Engineer.
>>>> www.spansystems.com
>>>>
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Richard Sayre [mailto:richardsa...@gmail.com]
>>>> Sent: Thursday, April 30, 2009 4:14 PM
>>>> To: Struts Users Mailing List
>>>> Subject: Re: Submitting a Date to an Action
>>>>
>>>> Thank you. I will give it a try.
>>>>
>>>> On Thu, Apr 30, 2009 at 1:22 AM, Matt Jiang <matt.ji...@gmail.com>
>>>> wrote:
>>>>>>
>>>>>> Hi
>>>>>>
>>>>>> It is nothing about date picker tag. You can have a Converter to
>>>>>> convert
>>>>>> String to Date and vice versa.
>>>>>> Below is my implementation for your reference:
>>>>>> (For DateUtil, please replace with yours)
>>>>>>
>>>>>> public class DateConverter extends StrutsTypeConverter {
>>>>>>
>>>>>> private static final String PATTERN = DateUtil.PATTERN_YYYY_MM_DD;
>>>>>>
>>>>>> �...@override
>>>>>> /**
>>>>>> * Converts one or more String values to the specified class.
>>>>>> *
>>>>>> * @param context the action context
>>>>>> * @param values the String values to be converted, such as those
>>>>>> submitted from an HTML form
>>>>>> * @param toClass the class to convert to
>>>>>> * @return the converted object
>>>>>> */
>>>>>> public Object convertFromString(Map context, String[] values, Class
>>>>>> toClass) {
>>>>>>
>>>>>> Date returnObject = null;
>>>>>> String value = values[0];
>>>>>> if (value != null && !value.trim().equals("")) {
>>>>>> try {
>>>>>> returnObject = DateUtil.parseDate(value, PATTERN);
>>>>>> } catch (ParseException e) {
>>>>>> // Just to ignore the parse exception
>>>>>> }
>>>>>> }
>>>>>> return returnObject;
>>>>>> }
>>>>>>
>>>>>> �...@override
>>>>>> /**
>>>>>> * Converts the specified object to a String.
>>>>>> *
>>>>>> * @param context the action context
>>>>>> * @param o the object to be converted
>>>>>> * @return the converted String
>>>>>> */
>>>>>> public String convertToString(Map context, Object o) {
>>>>>>
>>>>>> Date date = (Date) o;
>>>>>> String formatedDate = DateUtil.dateFormater(date, PATTERN);
>>>>>> return formatedDate;
>>>>>> }
>>>>>> }
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Thu, Apr 30, 2009 at 1:19 AM, Richard Sayre
>>>>>
>>>>> <richardsa...@gmail.com>wrote:
>>>>>>
>>>>>>>> I have an Action with a date attribute
>>>>>>>>
>>>>>>>> private Date myDate;
>>>>>>>>
>>>>>>>> public void setMyDate(Date myDate) {
>>>>>>>> this.myDate = myDate;
>>>>>>>> }
>>>>>>>>
>>>>>>>> I have a form that has a date picker (not the struts 2 date picker)
>>>>>>>> that populates a text field. When I submitt the form to my action
>>>>>>>> the
>>>>>>>> property does not get set because Struts 2 is looking for
>>>>>>>> setMyDate(String myDate).
>>>>>>>>
>>>>>>>> How do I tell Struts that the field is a Date?
>>>>>>>>
>>>>>>>>
>>>>>>>> Thank you,
>>>>>>>>
>>>>>>>> Rich
>>>>>>>>
>>>>>>>>
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>>>>>>>>
>>>>>>>>
>>>>>>
>>>>
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>>>>
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>>>
>>>
>>>
>>
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