Getting the preview URL of a File Entry

Posted on 18/05/2016 by Charalampos Chrysikopoulos

If you are working in a custom portlet and with FileEntries, it is very likely that you will need the preview url of this file, to use it in your UI.

There is a class with the name DLUtil that provide you with a method for this.

But, is you don't have the themeDisplay (because, for example, you are writing the code of a scheduler job), you can't use this class. You have to do this alone:

         public String getFileUrl(FileEntry fileEntry, boolean appendToken) throws Exception{
 
try {
StringBundler sb = new StringBundler();
 
sb.append("/documents/");
sb.append(fileEntry.getRepositoryId());
sb.append(StringPool.SLASH);
sb.append(fileEntry.getFolderId());
sb.append(StringPool.SLASH);
sb.append(HttpUtil.encodeURL(HtmlUtil.unescape(fileEntry.getTitle()), true));
sb.append("?version=");
sb.append(fileEntry.getFileVersion().getVersion());
 
if (appendToken) {
sb.append("&amp;t=");
 
Date modifiedDate = fileEntry.getFileVersion().getModifiedDate();
 
sb.append(modifiedDate.getTime());
}
 
return sb.toString();
}
catch (PortalException | SystemException e) {
throw e
}
 
return null;
}