XQuery/Uploading Files
< XQuery
Motivation
editYou want to upload files to your eXist database using simple HTML forms.
Method
editWe will use the HTML <input> element in the web form and the store function in an XQuery.
HTML Form
editWe will use a standard HTML form but we will add a enctype="multipart/form-data" attribute.
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>HTML Upload</title>
</head>
<body>
<form enctype="multipart/form-data" method="post" action="upload.xq">
<fieldset>
<legend>Upload Document:</legend>
<input type="file" name="file"/>
<input type="submit" value="Upload"/>
</fieldset>
</form>
</body>
</html>
Screen Image:
XQuery
editOn the server side, we will use the request:get-uploaded-file-name() to get the name of the incoming file and the request:get-uploaded-file-data() function to get the data from the file. We can then used the xmldb:store() function to save the file.
File: upload.xq
let $collection := '/db/test/upload-test'
let $filename := request:get-uploaded-file-name('file')
(: make sure you use the right user permissions that has write access to this collection :)
let $login := xmldb:login($collection, 'admin', 'my-admin-password')
let $store := xmldb:store($collection, $filename, request:get-uploaded-file-data('file'))
return
<results>
<message>File {$filename} has been stored at collection={$collection}.</message>
</results>
Acknowledgments
editThis example was posted on the eXist open mailing list by Rémi Arnaud on Nov. 05, 2010.