SOAPpy und WSDL

[tobias.vdk]

Hallo!

Ich habe folgendes Problem: Ich weiß nicht, wie ich einen Web-Service aufrufen kann...

Service.py:

#!/usr/bin/env python

import SOAPpy

def GetString():
    string = 'Hello World'
    return string

server = SOAPpy.SOAPServer(("localhost", 8081))
server.registerFunction(GetString)
try:
  server.serve_forever()
except KeyboardInterrupt:
  pass

Client:

#!/usr/bin/env python
import cherrypy
import SOAPpy as SOAP
from SOAPpy import WSDL


SOAP.Config.debug = 1

class Index(object):
    def __init__(self):
        self.wsdlFile = 'http://localhost:80/wsdl/GetString.wsdl'
        self.server = WSDL.Proxy(self.wsdlFile)

    def index(self):
        '''Show String'''
        formular = '''<form action="showString" method="GET">
                        <input type="submit"/>
                      </form>'''
        return formular
        
    index.exposed = True
    
    def showString(self):
        string = self.server.GetString()
        return string
        
    showString.exposed = True


if __name__ == '__main__':
    cherrypy.config.update({'server.socketPort' : 8080,
                            'server.threadPool' : 10,
                            'server.environment' : 'production'})
    cherrypy.root = Index()
    cherrypy.server.start()

WSDL:

<?xml version="1.0" encoding="UTF-8"?>
<definitions name="GetString"
    targetNamespace="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:tns="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns="http://schemas.xmlsoap.org/wsdl/">

  
  <message name="GetStringResponse">
    <part name="Response" type="xsd:string"/>
  </message>

  <portType name="GetStringPortType">
    <operation name="GetString">   
      <output message="tns:GetStringResponse"/>
    </operation>
  </portType>
  
  <binding name="GetStringSoapBinding" type="tns:GetStringPortType">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <operation name="GetString">
      <soap:operation soapAction="http://localhost:8081/GetString"/>
      <!--<input>
        <soap:body use="encoded" namespace="GetString"
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </input>-->
      <output>
        <soap:body use="encoded" namespace="GetString"
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </output>
    </operation>
  </binding>
  
  <service name="GetStringService">
    <documentation>Get a sring</documentation>
    <port name="GetString" binding="tns:GetStringSoapBinding">
      <soap:address location="http://localhost:8081/GetString"/>
    </port>
  </service>
  
</definitions>

Es ist als Test ein einfaches Formular mit einem Button. Wenn ich den drücke, soll die Funktion GetString() auf dem SOAPpy-Server aufgerufen werden. Leider kommt immer die Fehlermeldung

<faultcode>SOAP-ENV:Client</faultcode>
<faultstring>Method Not Found</faultstring>
<detail xsi:type="xsd:string">GetString:GetString : exceptions.KeyError u'GetString' &lt;traceback object at 0xb7b44aa4&gt;</detail>

Ich weiß leider nicht, od das WSDL-File so stimmt.

Vielleicht kann mir ja jemand helfen!
Schon mal vielen Dank dafür, dass ihr bis hier her gelesen habt!

Tschau Tobias

[Waxolunist]

Wenns dir nur darum geht einmal Python und SOAP zum Laufen zu bringen, dann mach einmal ein gutes Tutorial durch.

Hier z.B.

http://www.opensourcetutorials.com/t...ies/page1.html

[tobias.vdk]

Ich denke, dass es am WSDL-File liegt, denn wenn ich mit

self.server = SOAP.SOAPProxy("http://localhost:8081/")

den Server bestimme, dann funktionert alles.

Vielleicht ist es hier doch das falsche Forum?!

Tschau Tobias

[tobias.vdk]

Habe jetzt durch den Vergleich der SOAP-Nachrichten einige Fehler gefunden.
Hier die Nachrichten mit erfolgreicher Ausführung:

*** Outgoing HTTP headers **********************************************
POST / HTTP/1.0
Host: localhost:8081
User-agent: SOAPpy 0.12.0 (http://pywebsvcs.sf.net)
Content-type: text/xml; charset="UTF-8"
Content-length: 348
SOAPAction: "GetString"
************************************************************************
*** Outgoing SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>
<SOAP-ENV:Body>
<GetString SOAP-ENC:root="1">
</GetString>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************
code= 200
msg= OK
headers= Server: <a href="http://pywebsvcs.sf.net">SOAPpy 0.12.0</a> (Python 2.4.3)
Date: Wed, 21 Jun 2006 13:44:54 GMT
Content-type: text/xml; charset="UTF-8"
Content-length: 518

content-type= text/xml; charset="UTF-8"
data= <?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/1999/XMLSchema"
>
<SOAP-ENV:Body>
<GetStringResponse SOAP-ENC:root="1">
<Result xsi:type="xsd:string">Hello World</Result>
</GetStringResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

*** Incoming HTTP headers **********************************************
HTTP/1.? 200 OK
Server: <a href="http://pywebsvcs.sf.net">SOAPpy 0.12.0</a> (Python 2.4.3)
Date: Wed, 21 Jun 2006 13:44:54 GMT
Content-type: text/xml; charset="UTF-8"
Content-length: 518
************************************************************************
*** Incoming SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/1999/XMLSchema"
>
<SOAP-ENV:Body>
<GetStringResponse SOAP-ENC:root="1">
<Result xsi:type="xsd:string">Hello World</Result>
</GetStringResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************

Hier die Nachrichten mit negativer Ausführung:

*** Outgoing HTTP headers **********************************************
POST / HTTP/1.0
Host: localhost:8081
User-agent: SOAPpy 0.12.0 (http://pywebsvcs.sf.net)
Content-type: text/xml; charset="UTF-8"
Content-length: 378
SOAPAction: "GetString"
************************************************************************
*** Outgoing SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>
<SOAP-ENV:Body>
<ns1:GetString xmlns:ns1="GetString" SOAP-ENC:root="1">
</ns1:GetString>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************
code= 500
msg= Internal error
headers= Server: <a href="http://pywebsvcs.sf.net">SOAPpy 0.12.0</a> (Python 2.4 .3)
Date: Wed, 21 Jun 2006 13:52:14 GMT
Content-type: text/xml; charset="UTF-8"
Content-length: 677

content-type= text/xml; charset="UTF-8"
data= <?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/1999/XMLSchema"
>
<SOAP-ENV:Body>
<SOAP-ENV:Fault SOAP-ENC:root="1">
<faultcode>SOAP-ENV:Client</faultcode>
<faultstring>Method Not Found</faultstring>
<detail xsi:type="xsd:string">GetString:GetString : exceptions.KeyError u'GetStr ing' &lt;traceback object at 0xb7c1c2d4&gt;</detail>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

*** Incoming HTTP headers **********************************************
HTTP/1.? 500 Internal error
Server: <a href="http://pywebsvcs.sf.net">SOAPpy 0.12.0</a> (Python 2.4.3)
Date: Wed, 21 Jun 2006 13:52:14 GMT
Content-type: text/xml; charset="UTF-8"
Content-length: 677
************************************************************************
*** Incoming SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
  xmlns:xsd="http://www.w3.org/1999/XMLSchema"
>
<SOAP-ENV:Body>
<SOAP-ENV:Fault SOAP-ENC:root="1">
<faultcode>SOAP-ENV:Client</faultcode>
<faultstring>Method Not Found</faultstring>
<detail xsi:type="xsd:string">GetString:GetString : exceptions.KeyError u'GetStr ing' &lt;traceback object at 0xb7c1c2d4&gt;</detail>
</SOAP-ENV:Fault>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************

Hier das aktualisierte WSDL File:

<?xml version="1.0" encoding="UTF-8"?>
<definitions name="GetString"
    targetNamespace="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:tns="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns="http://schemas.xmlsoap.org/wsdl/">

  
  <message name="GetStringResponse">
    <part name="Response" type="xsd:string"/>
  </message>

  <portType name="GetStringPortType">
    <operation name="GetString">   
      <output message="tns:GetStringResponse"/>
    </operation>
  </portType>
  
  <binding name="GetStringSoapBinding" type="tns:GetStringPortType">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <operation name="GetString">
      <soap:operation soapAction="GetString"/>
      <!--<input>
        <soap:body use="encoded" namespace="GetString"
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </input>-->
      <output>
        <soap:body use="encoded" namespace="GetString"
                   encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
      </output>
    </operation>
  </binding>
  
  <service name="GetStringService">
    <documentation>Get a sring</documentation>
    <port name="GetString" binding="tns:GetStringSoapBinding">
      <soap:address location="localhost:8081"/>
    </port>
  </service>
  
</definitions>

Der Unterschied in den Nachrichten ist noch die
OK:

*** Outgoing SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>
<SOAP-ENV:Body>
<GetString SOAP-ENC:root="1"> <-- HIER 
</GetString>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************

Nicht OK:

*** Outgoing SOAP ******************************************************
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
  SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
  xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>
<SOAP-ENV:Body>
<ns1:GetString xmlns:ns1="GetString" SOAP-ENC:root="1"> <-- HIER STIMMTS NICHT
</ns1:GetString>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
************************************************************************

Weiß jemand, woran das liegt?

Tschau Tobias

[tobias.vdk]

So, habe jetzt den Fehler gefunden ... Hier die richtige Datei:

<?xml version="1.0" encoding="UTF-8"?>
<definitions name="GetString"
    targetNamespace="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:tns="http://localhost:80/wsdl/GetString.wsdl"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
    xmlns="http://schemas.xmlsoap.org/wsdl/">

  
  <message name="GetStringResponse">
    <part name="Response" type="xsd:string"/>
  </message>

  <portType name="GetStringPortType">
    <operation name="GetString">   
      <output message="tns:GetStringResponse"/>
    </operation>
  </portType>
  
  <binding name="GetStringSoapBinding" type="tns:GetStringPortType">
    <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
    <operation name="GetString">
      <soap:operation soapAction="GetString"/>
      <output>
        <soap:body use="literal" encodingStyle="http://schemas.xmlsoap.org/soap/literal/"/>
      </output>
    </operation>
  </binding>
  
  <service name="GetStringService">
    <documentation>Get a sring</documentation>
    <port name="GetString" binding="tns:GetStringSoapBinding">
      <soap:address location="localhost:8081"/>
    </port>
  </service>
  
</definitions>