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    <p>I know this post is a bit old but a solution may be useful to others.</p> <p>The default converter of Struts does not seem to work properly. The field error even occurs with readonly fields populated from the action.</p> <p>I resolved it by defining my own converter:</p> <ol> <li><p>Create the converter class (using the date format you need):</p> <pre><code>public class StringToDateTimeConverter extends StrutsTypeConverter { // WARNING not safe in multi-threaded environments private static final DateFormat DATETIME_FORMAT = new SimpleDateFormat("dd-MMM-yyyy hh:mm:ss"); public Object convertFromString(Map context, String[] strings, Class toClass) { if (strings == null || strings.length == 0 || strings[0].trim().length() == 0) { return null; } try { return DATETIME_FORMAT.parse(strings[0]); } catch (ParseException e) { throw new TypeConversionException("Unable to convert given object to date: " + strings[0]); } } public String convertToString(Map context, Object date) { if (date != null &amp;&amp; date instanceof Date) { return DATETIME_FORMAT.format(date); } else { return null; } } } </code></pre></li> <li><p>Put the conversion annotation on the property setter (or use a conversion.properties file)</p> <pre><code>@Conversion() public class MyEditAction { // ... @TypeConversion(converter="my.app.common.converter.StringToDateTimeConverter") public void setUploadedDate(Date uploadedDate) { this.uploadedDate = uploadedDate; } </code></pre></li> </ol> <p>In my case I did not need to edit it but wanted to specify the format in the jsp. I used an additional hidden field to keep the original value (another alternative would have been the use of Preparable interface):</p> <pre><code>&lt;s:textfield name="uploadedDateDisplay" value="%{getText('format.datetimesecond',{uploadedDate})}" size="70" disabled="true"/&gt; &lt;s:hidden name="uploadedDate" /&gt; </code></pre>
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    1. POHow to input Date to a Struts2 action from a jsp?
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    1. USAndrew Spencer
    1. USSamuel
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    1. COFor the n:th time I feel compelled to add this comment: Do not use SimpleDateFormat like that. It will produce garbage when two threads use it at the same time.
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      1. USBloodboiler
    2. COIs the "static" to blame here? Feel free to edit my answer
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