JavaScript SOAP客戶端拋出未捕獲的TypeError

Question

我正在使用guru4的soap客戶端編寫一個簡單的“ Hello world”程序。 我從Chrome控制台收到一個錯誤Uncaught TypeError: Cannot read property 'documentElement' of null 。

這是我的JavaScript。

  <script src="soapclient.js"></script>
  <script type="text/javascript">
    function say_hello()
    {

        var pl = new SOAPClientParameters();
        pl.add("name", "john");
        pl.add("times", 2);
        SOAPClient.invoke("http://192.168.1.100:7789/", "say_hello", pl, true, say_hello_callBack);
    }
    function say_hello_callBack(r)
    {
        alert(r);
    }
  </script>

這是我要與之交互的服務器。

import soaplib

from soaplib.core.service import soap
from soaplib.core.service import DefinitionBase
from soaplib.core.model.primitive import String, Integer

from soaplib.core.server import wsgi
from soaplib.core.model.clazz import Array

'''
This is a simple HelloWorld example to show the basics of writing
a webservice using soaplib, starting a server, and creating a service
client.
'''

class HelloWorldService(DefinitionBase):
    @soap(String, Integer, _returns=Array(String))
    def say_hello(self, name, times):
        '''
        Docstrings for service methods appear as documentation in the wsdl
        <b>what fun</b>
        @param name the name to say hello to
        @param the number of times to say hello
        @return the completed array
        '''
        results = []
        for i in range(0, times):
            results.append('Hello, %s' % name)
        return results

if __name__=='__main__':
    try:
        from wsgiref.simple_server import make_server
        soap_application = soaplib.core.Application([HelloWorldService], 'tns')
        wsgi_application = wsgi.Application(soap_application)

        print "listening to http://0.0.0.0:7789"
        print "wsdl is at: http://127.0.0.1:7789/?wsdl"

        server = make_server('localhost', 7789, wsgi_application)
        server.serve_forever()

    except ImportError:
        print "Error: example server code requires Python >= 2.5"

我感覺到此錯誤正在發生，因為我依賴於SOAP客戶端內置的XML生成器。

Answer 1

您可以打開“ Web開發人員工具 ”（ Ctrl + Shift + J ），然后看一下JS代碼。 可能沒有WSDL。 可能是結果消息具有此“ JavaScript SOAP客戶端”不支持的名稱（應命名為MethodName + "Result" ，例如LoginResult）。