Using FileUpload with Struts

[Andreas Heinecke]

Hi,

I encountered a problem with commons FileUpload and Struts. I decided to use 
the commons FileUpload in my struts app because the upload with struts 
(FormFile) isn't serializable. I need it to be serializable because I want to 
make the uploaded file persistent with hibernate.
I found out that using the commons FileUpload will be serializable, since it 
implements the Interface. But how do I integrate it with struts?

Here is what I've done:

I created a multipart-form with tags by struts:
<html:form action="/admin/upload.do" enctype="multipart/form-data">
                <table>
                        <tr>
                                <td>Titel&#160;</td>
                                <td><html:text property="title" size="80" 
/></td>
                        </tr>
                        <tr>
                                <td>Datei&#160;</td>
                                <td><html:file property="file"></html:file> 
</td>
                        </tr>
                        <tr>
                                <td>&#160;</td>
                                <td 
align="right"><html:reset>reset</html:reset>&#160;<html:submit>eintragen</html:submit>
                                </td>
                        </tr>
                </table>
        </html:form>

The I created to corresponding Form class:
public class UploadForm extends ValidatorForm
{
        private String title;
        private FormFile file;
        
        // getters .. and setters left out for this post

}

This form will be sent to my Action class UploadAction:

Here I am able to retrieve the FormFile ... but thats not serializable

If I try to get the uploaded file as described at FileUpload Homepage, like 
this:

DiskFileUpload upload = new DiskFileUpload();
List<FileItem> items = upload.parseRequest(request);

The returned list is null.

Does anybody allready done something like that?
Any sugesstion is much appreciated!

Thx in advance,

regards

Andreas Heinecke

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