这个答案意味着我可以在 xmlrpc 服务器代理上使用 getattr。但是,就我而言,这似乎不起作用。我错过了定义服务器的步骤吗?
我的服务器代码是这样的:
import SimpleXMLRPCServer
class Listener(object):
def ping(self):
return "ping"
s = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost",8910), allow_none=True)
l = Listener()
s.register_instance(l)
s.register_introspection_functions()
s.serve_forever()
当我以交互方式使用它时,我可以调用 ping 函数,但我不能在代理上使用 getattr:
$ python -i
ActivePython 2.7.2.5 (ActiveState Software Inc.) based on
Python 2.7.2 (default, Jun 24 2011, 12:22:14) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import xmlrpclib
>>> proxy = xmlrpclib.ServerProxy("http://localhost:8910", allow_none=True)
>>> proxy.ping()
'ping'
>>> getattr(proxy, "ping")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "c:\Python27\lib\xmlrpclib.py", line 1224, in __call__
return self.__send(self.__name, args)
File "c:\Python27\lib\xmlrpclib.py", line 1575, in __request
verbose=self.__verbose
File "c:\Python27\lib\xmlrpclib.py", line 1264, in request
return self.single_request(host, handler, request_body, verbose)
File "c:\Python27\lib\xmlrpclib.py", line 1297, in single_request
return self.parse_response(response)
File "c:\Python27\lib\xmlrpclib.py", line 1473, in parse_response
return u.close()
File "c:\Python27\lib\xmlrpclib.py", line 793, in close
raise Fault(**self._stack[0])
xmlrpclib.Fault: <Fault 1: '<type \'exceptions.Exception\'>:method "ping.__repr__" is not supported'>
>>>