AEM 6.5 Sitemap lastmod date formatting

Question

Hi All,

Hope you can help me clarify below requirement in my current project that is using AEM 6.5 related to Sitemap. One of my teammates implemented this approach:

https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/generate-sitemap-xml-in-6-5-10/m-p/541339

The requirement from business is to have "lastmod" value in yyy-MM-dd format. I wonder if that could be possible since the Url.setLastModified method accepts as a parameter an Instance object that is already defined in the interface class from URL.class. Using Calendar.toInstance() method will output always YYYY-MM-DDTHH:mm:ss. I'm not sure if there might be another alternative for the requirement. Appreciate your inputs whether there is a possible solution or not so that I can clarify it and express the limitations to Business.

Thank you and best regards.

A_H_M_Imrul · Accepted Answer

@luis_ochoa

An Instant in Java represents an instantaneous point in time on the timeline. It's stored in UTC and typically represented in the format of "yyyy-MM-ddTHH:mm:ss.SSSZ" where "T" separates the date and time, "Z" signifies UTC, and the time includes hours, minutes, seconds, and milliseconds. However, you can convert an Instant to a LocalDate (which represents just a date without time or timezone information) and then back to an Instant if needed.

Instant instant = Instant.now(); // Replace this with your specific Instant

// Convert Instant to LocalDate
LocalDate localDate = instant.atZone(ZoneId.systemDefault()).toLocalDate();

// Convert LocalDate back to Instant (with only date and no time)
Instant dateOnlyInstant = localDate.atStartOfDay(ZoneId.systemDefault()).toInstant();

System.out.println(dateOnlyInstant); // Output: 2023-11-26T00:00:00Z

Thats the maximum you can achieve with this approach. Otherwise, you can check this customizable solution: https://github.com/Adobe-Consulting-Services/acs-aem-commons/blob/master/bundle/src/main/java/com/adobe/acs/commons/wcm/impl/SiteMapServlet.java

A_H_M_Imrul · Answer

@luis_ochoa

Try this:

if (lastmod != null) {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String formattedDate = sdf.format(lastmod.getTime());
    System.out.println("Formatted Date: " + formattedDate);
    // Use `formattedDate` as needed in your code
    Instant instant = null;
    try {
        instant = sdf.parse(formattedDate).toInstant();
        // you can then set instant whereever you want 
    } catch (java.text.ParseException e) {
        e.printStackTrace(); // Handle parsing exception if needed
    }
} else {
    // Handle case where `lastmod` is null
    System.out.println("Last Modified Date is null");
}

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