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)

Wytze · Accepted Answer · 2012-09-02 20:41:09Z

4

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)
}

answered Sep 2, 2012 at 20:41

Wytze

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Comments

nate_weldon · Accepted Answer · 2012-05-03 15:22:16Z

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 3, 2012 at 15:22

nate_weldon

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How is this working? I am getting exception that those methods do not exist.

I had to add if(request instanceof MultipartHttpServletRequest){} on my controller

Suganthan Madhavan Pillai · Accepted Answer · 2014-10-30 13:22:35Z

1

I'm using this

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

answered Oct 30, 2014 at 13:22

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