Multipart post in grails causes 404 error - grails

Question

I try to upload data to a grails app. This works very good and the object is created in the database and the uploaded document is also present. Unfortunately i get a 404 error directly after the creation.
I am using grails 2.3.5 with the following code:
Action to save:
#Transactional
def save(Book bookInstance) {
if (bookInstance == null) {
notFound()
return
}
if (bookInstance.hasErrors()) {
respond bookInstance.errors, view:'create'
return
}
if(!bookInstance.id){
bookInstance.id = UUID.randomUUID().toString()
}
bookInstance.save flush:true
request.withFormat {
form {
flash.message = message(code: 'default.created.message', args: [message(code: 'Book.label', default: 'Book'), bookInstance.id])
redirect bookInstance
}
'*' {
respond bookInstance, [status: CREATED]
}
}
}
GSP:
<g:uploadForm action="save" class="form-horizontal">
<g:render template="form"/>
<div class="form-actions margin-top-medium">
<g:submitButton name="create" class="btn btn-primary" value="${message(code: 'default.button.create.label', default: 'Create')}" />
<button class="btn" type="reset"><g:message code="default.button.reset.label" default="Reset" /></button>
</div>
</g:uploadForm>
When the tag is used instead of the it works. The enctype="multipart/form-data" causes the error.
What can I try to solve this?
Thanks

Answer 1

You should check conf/Config.groovy and check that multipartForm: 'multipart/form-data', is present as a value for grails.mime.types, e.g.:
grails.mime.types = [
...
form: 'application/x-www-form-urlencoded',
multipartForm: 'multipart/form-data',
]
You also need to specify that it's a multipart form in your withFormat declaration:
request.withFormat {
form multipartForm

Answer 2

You can try 'render' or 'forward' instead of "respond" .