Get file from XHtml input tag

answered 2009-07-09 01:55:42 +0800

timshiu
51

updated 2009-07-09 01:58:22 +0800

Only the following text is shown after I browsed the file and clicked the Upload button.
org.apache.commons.fileupload.servlet.ServletFileUpload.setProgressListener(Lorg/apache/commons/fileupload/ProgressListener;)V

This text is shown before the Cancel button and after the text [Specify a file located in your local system]. (And the Upload button is disappeared)

I tried to try .... catch .... if any exception is thrown and nothing is caught.
Also, nothing is logged in the Portal page log.

Are there any other way to log the exception stack????

answered 2009-07-09 02:58:00 +0800

timshiu
51

updated 2009-07-09 02:58:32 +0800

Let me summarize my questions again.
What I want to do is to get the file binary from client side.

1) I tried use FileUpload control in ZK, but the FileUpload control throw error when Upload button is clicked.
Error message:
org.apache.commons.fileupload.servlet.ServletFileUpload.setProgressListener(Lorg/apache/commons/fileupload/ProgressListener;)V
The error message is just shown at the UI and I cannot find any exception stack. (The error only thrown in my Portal page but just fine in normal webpage)

2) Then, I want to find if any workaround existed to get the file binary. (This is my first question)
I tried to write the sample code:
<zk>
<window title="File Upload" border="normal" xmlns:h="http://www.w3.org/1999/xhtml">
<h:input id="fileUpload" type="file" />
<button label="Test">
<attribute name="onClick">
// Get the file binary from fileUpload control
// ....
</attribute>
</button>
</window>
</zk>

But I don't know if ZK is able to get the file binary from the pure xhtml control. (i.e. I don't know what function should be called in the onClick function of the Test button)

So, my questions are:
1) Does anyone know what's wrong with the FileUpload control for my case???? What can I do to get the exception stack.
2) Is there any workaround for file upload???? e.g. get the file binary directly from xhtml

Thanks a lot.

answered 2009-07-09 03:46:26 +0800

timshiu
51

updated 2009-07-09 03:53:07 +0800

Thanks for your prompt response.

I have tried changing the commons-fileupload.jar, even download the latest version (1.2.1) from the official site and the error still occurred.

And may I ask you a question about Java. Is there any method we can trace the class that is loaded from which jar file or class file? I suspected this issue may be due to another old jar file containing the classes inside commons-fileupload.jar....

answered 2009-07-09 07:07:04 +0800

timshiu
51

To Dennis,

Thanks for your kindly help on this issue. I finally located an older version of common-fileupload.jar in the system and the FileUpload control work fine in my Portal page now.
Thank you very much.