一、远程过程调用RPC

XML-RPC is a Remote Procedure Call method that uses XML passed via HTTP as a transport. With it, a client can call methods with parameters on a remote server (the server is named by a URI) and get back structured data. This module supports writing XML-RPC client code; it handles all the details of translating between conformable Python objects and XML on the wire.

简单地，client可以调用server上提供的方法，然后得到执行的结果。类似与webservice。

推荐查看xmlprc的源文件：C:\Python31\Lib\xmlrpc

二、实例

1） Server

复制代码 代码如下:

from xmlrpc.server import SimpleXMLRPCServer
from xmlrpc.server import SimpleXMLRPCRequestHandler

def div(x,y):
return x - y

class Math:
def _listMethods(self):

this method must be present for system.listMethods

    # to work  
    return ['add', 'pow']  
def _methodHelp(self, method):  
    # this method must be present for system.methodHelp  
    # to work  
    if method == 'add':  
        return "add(2,3) => 5"  
    elif method == 'pow':  
        return "pow(x, y[, z]) => number"  
    else:  
        # By convention, return empty  
        # string if no help is available  
        return ""  
def _dispatch(self, method, params):  
    if method == 'pow':  
        return pow(*params)  
    elif method == 'add':  
        return params[0] + params[1]  
    else:  
        raise 'bad method'

server = SimpleXMLRPCServer(("localhost", 8000))
server.register_introspection_functions()
server.register_function(div,"div")
server.register_function(lambda x,y: x*y, 'multiply')
server.register_instance(Math())
server.serve_forever()