struts2crud_upblob

<% BlobstoreService blobstoreService = BlobstoreServiceFactory.getBlobstoreService(); %>
<form action="<%= blobstoreService.createUploadUrl("/blobstore-servlet?action=upload")%>" method="post" enctype="multipart/form-data">
        <input type="file" name="photoUrl">
        <input type="submit" value="Upload">
 </form>