web-services - 尝试使用ironpython和soap调用Web服务

Question

我正在尝试使用 wsdl 文件向网络服务器发送同步 SOAP 消息。我为 wsdl 文件创建了一个 cs 文件和 dll，以便按照 IronPython 中的操作说明在 IronPython 中加载。我已经创建了我的 SOAP 消息(网络服务所需)，但我认为我没有正确构建我的网络请求。

这是我的代码:

    import clr
clr.AddReference("System")
clr.AddReferenceToFileAndPath("C:\\Temp\MeetingSpaceService.dll")
clr.AddReference("System.Xml")
clr.AddReference("System.Web.Services")

from MeetingSpaceService import MeetingSpaceService
service = MeetingSpaceService()
from System.Net import WebClient
from System.IO import StreamWriter
from System.IO import StreamReader
from  System.IO import StringWriter
import System.Xml
import System.Text
from System import Uri
from System.Xml import XmlTextWriter
from System.Xml import Formatting
from System.Web.Services import *
from System.Net import HttpWebRequest
import System.Object
import System.Array
import System.Byte
from System.Xml import XmlDocument
from System.IO import File
from System.Object import ToString
#from System.ServiceModel.Description import WsdlImporter as wsdl 
from System.Web.Services.Description import (ServiceDescription,     ServiceDescriptionImporter)
from System.Web.Services.Protocols import SoapHttpClientProtocol
from System.IO import MemoryStream
from System.Net import WebClient

readerboard = ''' <?xml version="1.0" encoding="utf-8"?>
</soap:Envelope> <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"     xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <soap:Header>
  <wsa:Action>http://htng.org/PWSWG/2007/01/DigitalSignage#MeetingSpaceRequest</wsa:Action>
  <wsa:MessageID>urn:uuid:44088898-6926-4537-b1a3-4acc8e9f71d0</wsa:MessageID>
  <wsa:ReplyTo>
     <wsa:Address>http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous</wsa:Address>
  </wsa:ReplyTo>
  <wsa:To>http://localhost:2025/MeetingSpaceProviderService/Request.asmx</wsa:To>
  <wsse:Security soap:mustUnderstand="1">
     <wsu:Timestamp wsu:Id="Timestamp-e157d58f-6589-4b3e-b2a9-5510dd9f270f">
        <wsu:Created>2011-04-17T15:35:25Z</wsu:Created>
        <wsu:Expires>2012-07-17T15:40:25Z</wsu:Expires>
     </wsu:Timestamp>"
     <wsse:UsernameToken wsu:Id="SecurityToken-843aeb4f-07de-4c78-a438-e051d3baa764">
        <wsse:Username>isacrb</wsse:Username>
        <wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">is@cr6_662</wsse:Password>
     </wsse:UsernameToken>
  </wsse:Security>

” '''

uriString = "https://ice-services.starwoodhotels.com/readerboard‏"
uri = Uri(uriString)

try: 
webRequest = HttpWebRequest.Create(uri)
webRequest.ContentType = "text/xml;charset=\"utf-8\""
webRequest.Accept = "text/xml"
webRequest.ContentLength = readerboard.Length
webRequest.Timeout = 1000000000
webRequest.Method = "POST"
webRequest.GetRequestStream()
webRequest.Write(readerboard)
webRequest.GetResponse()
except Exception, e:
    print (9) 

我在这里进行了更改，现在这就是我得到的。网络服务是同步的，所以我相信正在发生的是，当您发送请求时，响应会自动返回。此时

rqt = webRequest.GetRequestStream() there is around a 1.5 to 2.5 second delay before the next line is read. that mimicks the behavior in SOAPUi where after the message is sent there is usually a second or so delay and then the return XML data shows up in the response box. I am thinking that after the rqt= webRequest I need to somehow read the stream without asking for the response. can I send you the cs file and dll I created to import the WSDL and see what you think. At that point you should be able to access the server and in an IDE see what I am talking about. I appreciate your help. thank you so much.

以下是上述操作之后发生的情况:

>>> rqt = webRequest.GetRequestStream()
>>> rqt.Write(byte1,0,byte1.Length)
>>>
>>>     #get the response here
>>> rsp = webRequest.GetResponse()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
SystemError: The remote server returned an error: (500) Internal Server Error.
>>>     #create a stream reader to convert the raw response into UTF8 for text
>>> readStream = StreamReader(rsp.GetResponseStream(), System.Text.Encoding.UTF8
)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'rsp' is not defined
>>>     #read the data from the stream into a string
>>> data = readStream.ReadToEnd()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'readStream' is not defined
>>> readStream.Close()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'readStream' is not defined
>>> rsp.Close()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'rsp' is not defined
>>>     #Do stuff with the data here
>>> print data
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'data' is not defined
>>>

Answer 1

发出请求时需要添加 header 来表示 SOAPAction。

所以类似:

webRequest.Headers.Add('SOAPAction', '"http://myservice.com/1/poll"') 

调用网络服务的完整代码如下。在这种情况下http://wsf.cdyne.com/WeatherWS/Weather.asmx?WSDL

import clr

from System.Net import WebClient
from System.IO import StreamReader
import System.Text
from System import Uri
from System.Net import HttpWebRequest

#This is the SOAP Payload 
#Just build it with basic concats
readerboard = """<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetCityWeatherByZIP xmlns="http://ws.cdyne.com/WeatherWS/">
      <ZIP>10011</ZIP>
    </GetCityWeatherByZIP>
  </soap:Body>
</soap:Envelope>"""


uriString = "http://wsf.cdyne.com/WeatherWS/Weather.asmx"
uri = Uri(uriString)

try: 
    webRequest = HttpWebRequest.Create(uri)
    webRequest.ContentType = "text/xml;charset=\"utf-8\""
    webRequest.Accept = "text/xml"
    webRequest.Timeout = 1000000000
    webRequest.Method = "POST"
    #We set the SOAPAction Header - this tells the end point what service to run
    webRequest.Headers.Add('SOAPAction', '"http://ws.cdyne.com/WeatherWS/GetCityWeatherByZIP"') 

    #we turn the payload into a byte array to allow us to write it to the request stream
    encoding = System.Text.UTF8Encoding();
    byte1 = encoding.GetBytes(readerboard);
    #write the bytes above to the request
    rqt = webRequest.GetRequestStream()
    rqt.Write(byte1,0,byte1.Length)
    #get the response here
    rsp = webRequest.GetResponse()
    #create a stream reader to convert the raw response into UTF8 for text
    readStream = StreamReader(rsp.GetResponseStream(), System.Text.Encoding.UTF8)
    #read the data from the stream into a string
    data = readStream.ReadToEnd()
    readStream.Close()
    rsp.Close()
    #Do stuff with the data here
    print data
except System.Net.WebException, we:
    print "Web Exception:", we.Message
    if we.Status == System.Net.WebExceptionStatus.ProtocolError: 
        print int(we.Response.StatusCode), we.Response.StatusDescription
        print (StreamReader(we.Response.GetResponseStream(), System.Text.Encoding.UTF8)).ReadToEnd()
except Exception, e:
    print e