Support for marshalling javascript "file" objects to a serverside object (java.io.InputStream, javax.activation.DataSource, org.apache.commons.fileupload.FileItem?, others??).
Files can be uploaded asynchronously by moving the javascript file object to a hidden multipart form, submitting the hidden form to a hidden frame then moving the file back to it's original location. Also look into dojo and gmail file upload.
Dwr does not currently transmit multipart data, will have to look into this. DWR should send only one multipart post if transmitting 2 files and a string
eg RemoteClass.someMethod("foo", ${"file1"}, ${"file2"}, callback);
The following example asynchronously uploads a file:
<html>
<head>
<script>
function asyncUpload() {
var theFile = document.getElementById("theFile");
var fileParent = theFile.parentNode;
// create a div with a hidden iframe and form
var theDiv = document.createElement('div');
theDiv.style.display = 'none';
theDiv.innerHTML =
'<iframe id="hidden_frame" name="hidden_frame" src=""></iframe>' +
'<form id="hidden_form" target="hidden_frame" action="/sandbox2/async/fileUpload.do" enctype="multipart/form-data" method="post"></form>';
document.body.appendChild(theDiv);
var hiddenForm = document.getElementById("hidden_form");
fileParent.removeChild(theFile);
// attach the file to the hidden form
hiddenForm.appendChild(theFile);
hiddenForm.submit();
hiddenForm.removeChild(theFile);
// put th file back where it came from
fileParent.appendChild(theFile);
// can't remove div yet, frame may not have loaded
//document.body.removeChild(theDiv);
}
</script>
</head>
<body>
<div><input name="theFile" id="theFile" type="file"></div>
<a href="javascript:asyncUpload()">Async Upload</a>
</body>
</html>
New Feature
Resolved
Minor
Patch submitted 21/6/2007