Dynamic View Panel日期格式化自定义Bean无效，求助排查及实现

I see the exact issue with your current code—you’ve defined a custom ViewColumnConverter, but you haven’t told the DominoViewCustomizer to actually use it! The customizer bean needs to override the createColumnConverter method to return your converter instance; without this step, the Dynamic View Panel will just stick to the default converter, ignoring your logic entirely.

Here’s a corrected, simplified version of your bean that will work, plus some robustness improvements:

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.concurrent.ThreadLocal;
import javax.faces.context.FacesContext;
import javax.faces.component.UIComponent;
import lotus.domino.DateTime;
import com.ibm.xsp.extlib.component.dynamicview.DominoViewCustomizer;
import com.ibm.xsp.extlib.component.dynamicview.ViewColumnConverter;

public class DynamicViewCustomizerBean_Ben extends DominoViewCustomizer {

    // Use ThreadLocal to make SimpleDateFormat thread-safe (critical for server-side code)
    private static final ThreadLocal<SimpleDateFormat> DATE_FORMATTER = 
        ThreadLocal.withInitial(() -> new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH));

    @Override
    protected ViewColumnConverter createColumnConverter() {
        // This is the missing piece: return our custom converter to the view panel
        return new ExtendedViewColumnConverter();
    }

    public static class ExtendedViewColumnConverter extends ViewColumnConverter {
        @Override
        public String getValueAsString(final FacesContext context, final UIComponent component, final Object value) {
            // Handle Domino's native DateTime type first
            if (value instanceof DateTime) {
                DateTime dominoDateTime = (DateTime) value;
                return DATE_FORMATTER.get().format(dominoDateTime.toJavaDate());
            }
            // Handle standard Java Date objects
            if (value instanceof Date) {
                return DATE_FORMATTER.get().format((Date) value);
            }
            // Fall back to default converter for all other data types
            return super.getValueAsString(context, component, value);
        }
    }
}

Key Fixes & Notes: #

• Added createColumnConverter override: This is the critical missing step. Without it, your custom converter never gets passed to the Dynamic View Panel—so it was never being used at all.
• Thread-safe formatting: SimpleDateFormat is not thread-safe, so wrapping it in ThreadLocal prevents race conditions when multiple requests hit your bean simultaneously.
• Proper Domino DateTime handling: Converting the Domino DateTime to a Java Date with toJavaDate() ensures the formatter works as expected (your original code tried to format the Domino DateTime directly, which can cause unexpected behavior).
• Consistent date pattern: I’ve standardized on yyyy-MM-dd for both date types as per your requirement—adjust the pattern in SimpleDateFormat if you need to include time later.

Double-Check Your Setup: #

Confirm your Dynamic View Panel’s customizerBean property still points to the full class name of your bean, like you had before:

<xe:dynamicViewPanel id="dynamicViewPanel1" showColumnHeader="true" 
    customizerBean="com.videotron.xpages.DynamicViewCustomizerBean_Ben" var="rowData">
    <!-- Your panel content -->
</xe:dynamicViewPanel>

If you still don’t see changes after updating the code, try cleaning your project and restarting the Domino server to ensure the updated bean is deployed properly.

内容的提问来源于stack exchange，提问作者Ben Dubuc