Multiple file input type upload in grails

Question

When I use the 'multiple' attribute I can't get it to work:

<input type="file" id="files" name="files[]" multiple />

The controller action method body:

request.getFileNames().each {
    println it
}

The problem is that this iteration returns only one file. Can anyone help me to obtain all the files uploaded? (I'm using grails 2.0.3)

Looks like similar to [this](http://stackoverflow.com/questions/10155645/multiple-file-upload-in-grails) — Andriy Budzinskyy, May 03 '12 at 08:42

score 4 · Answer 1 · answered Sep 02 '12 at 20:41

Grails 2 uses Spring 3 which uses the MultipartRequest class to handle this.

This class has a getFiles(String name) function which you can use in your case. So this will result in the following code:

request.getFiles("files[]").each { file ->
    log.debug(file.originalFilename)
}

score 3 · Accepted Answer · answered May 03 '12 at 15:22

3

you have to get at the multiple file part of the request.

I think you can do

request.getMultiFileMap()

or

request.multiFileMap.documentFile

answered May 03 '12 at 15:22

nate_weldon

How is this working? I am getting exception that those methods do not exist. – Giannis Jul 03 '14 at 13:08
I had to add if(request instanceof MultipartHttpServletRequest){} on my controller – Giannis Jul 04 '14 at 15:07

score 1 · Answer 3 · answered Oct 30 '14 at 13:22

1

I'm using this

request.multiFileMap.get("files[]")

answered Oct 30 '14 at 13:22

3 Answers3