django use spyne lib on apache server response no content

Question

I have developed a web service, using spyne.protocol.soap.soap11 when running In Django command (python manage runserver), it works as expected:

1.I can get wsdl file from $url?wsdl

2.call a web service and get response

but when deployed in apache server, it response $url?wsdl with status 200 OK but no content:

Connection →close
Content-Length →0
Content-Type →text/xml; charset=utf-8
Date →Mon, 16 Oct 2017 02:22:08 GMT
Server →Apache/2.2.15 (CentOS)

and I can also call a web service, and the server does what I want(insert a data to the database) but apache server response no content.

Note: All above running on the same machine, same python

I have searched in google and StackOverflow, but there are no similar questions.

1 class AbnormalService(ServiceBase):
2 @rpc(Unicode, Unicode, Integer, Integer, Integer, _returns=Unicode)
3 def abnormal(ctx, username, password, locationID, abnormalID, smallAbnormalID):
4    try:
5        AbnormalRecord.objects.create(location_id=locationID, abnormal_id=abnormalID, smallAbnormal_id=smallAbnormalID)
6   except Exception as ex:
7        return str(ex)
8   return "OK"

This is my spyne web service view. And line 5 did excuted on apache server(Database added a line). And It is supposed to responding like:

<?xml version='1.0' encoding='UTF-8'?>
<soap11env:Envelope xmlns:soap11env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tns="spyne.examples.django">
<soap11env:Body>
    <tns:abnormalResponse>
        <tns:abnormalResult>OK</tns:abnormalResult>
    </tns:abnormalResponse>
</soap11env:Body>
</soap11env:Envelope>

But the respons with header Content-Length:0, and web service did excuted
I had try add WSGIApplicationGroup %{GLOBAL} to httpd.conf, nothing changed. My django setting: urls:

url(r'^uploadrecords', DjangoView.as_view(
    services=[views.AbnormalService], tns='spyne.examples.django',
        in_protocol=Soap11(validator='lxml'),
        out_protocol=Soap11(),
        cache_wsdl=False)),
    url(r'^api/', DjangoView.as_view(application=views.app)),`<br>

views:

    class AbnormalService(ServiceBase):
    @rpc(Unicode, Unicode, Integer, Integer, Integer, _returns=Unicode)
    def abnormal(ctx, username, password, locationID, abnormalID, smallAbnormalID):
        try:
            AbnormalRecord.objects.create(location_id=locationID, abnormal_id=abnormalID, smallAbnormal_id=smallAbnormalID)
        except Exception as ex:
            return str(ex)
        return "OK"

    app = Application([AbnormalService],
    'spyne.examples.django',
    in_protocol=Soap11(validator='lxml'),
    out_protocol=Soap11(validator='lxml'),
    )
    abnormal_service = csrf_exempt(DjangoApplication(app))

settings:

   WSGIApplicationGroup %{GLOBAL}
    WSGIPythonPath /var/www/html/kanban
    Listen 9000
    <VirtualHost *:9000>
    <Directory "/var/www/html/kanban/kanban">
<Files wsgi.py>
    Order allow,deny
    Allow from all
</Files>
WSGIApplicationGroup %{GLOBAL}
</Directory>



WSGIScriptAlias / /var/www/html/kanban/kanban/wsgi.py

WSGIApplicationGroup %{GLOBAL}
    ServerName dummy-host.example.com
    ErrorLog logs/django_log
    CustomLog logs/django_custom_log common
</VirtualHost>