S:fileUpload problem with a4j Commandbutton

[tarunbansal84]

Hi

I am using s:fileupload control with ajax commandbutton(a4j:commanButton), but it is does not work. When I replace the a4j:commanButton with h:commandButton then it works fine.

Please suggest me something about the difference.

Best Reagrds
Tarun Bansal

[meetoblivion]

I think you'll have to clarify what you mean by It doesn't work.  if you could also post how you implemented it, it may help figure out why.  Personally, I prefer richfaces' fileupload control, but that's just me.

[tarunbansal84]

I am using a simple backing bean and a byte array


`
the portion of code in seam component

         private byte[] data;

     
     public byte[] getData() {
          return data;
     }

     public void setData(byte[] data) {
          this.data = data;
     }

     public void action() {
          System.out.println(this.getData().length);
     }


code in Xhtml page:

<h:form id="fileEditForm" enctype="multipart/form-data">

<s:fileUpload data="#{excelUploadBean.fileData}" />

<h:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >

</h:form>




` 

when I replace the  `<h:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >` with `<a4j:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >`

the "byte[] data"(in action method) remains null.

[tarunbansal84]

<blockquote>
_tarun bansal wrote on Feb 17, 2009 05:53:_<br/>

I am using a simple backing bean and a byte array


`
the portion of code in seam component

         private byte[] data;

       
        public byte[] getData() {
                return data;
        }

        public void setData(byte[] data) {
                this.data = data;
        }

        public void action() {
                System.out.println(this.getData().length);
        }


code in Xhtml page:

<h:form id="fileEditForm" enctype="multipart/form-data">

<s:fileUpload data="#{excelUploadBean.data}" />

<h:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >

</h:form>




` 

when I replace the  `<h:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >` with `<a4j:commandButton value="Submit"  id="submitExcel" action="{excelUploadBean.action}" >`

the "byte[] data"(in action method) remains null.
</blockquote>

sorry the tag in xhtml for fileupload is <s:fileUpload data="#{excelUploadBean.data}" />

[shathomas]

I am having a similar problem. It works fine with h:commandLink, but when I use a4j:commandLink, the file upload control values ( filename and data ) are coming in as null values in the action bean.

Did you get it working? Would you please share the solution/workaround?

[aurelius]

I had the same problem also with files uploads, also for file downloads. Because for both cases I needed the a4j commandButton or commandLink to use f:setPropertyActionListener I've made the next trick: when I click a4j commandButton or a4j commandLink I am opening a modalPanel frame, and I am using s:link or s:button, depends what I need.