使用XML库的方式,实现RPC通信的方法(推荐)

1、先说结论：使用xml-rpc的机制可以很方便的实现服务器间的RPC调用。

2、试验结果如下：

3、源码如下：

服务器端的源代码如下：

import operator, math
from SimpleXMLRPCServer import SimpleXMLRPCServer
from functools import reduce

def main():
 server = SimpleXMLRPCServer(('127.0.0.1', 7001))
 server.register_introspection_functions()
 server.register_multicall_functions()
 server.register_function(addtogether)
 server.register_function(quadratic)
 server.register_function(remote_repr)
 
 print("Server ready")
 server.serve_forever()
 
def addtogether(*things):
 """Add together everything in the list things ."""
 return reduce(operator.add, things)
 
def quadratic(a, b, c):
 """Determine x values satisfying: a * x * x + b * x + c = 0"""
 b24ac = math.sqrt(b*b - 4.0*a*c)
 return list(set([(-b-b24ac) / 2.0*a, (-b+b24ac) / 2.0*a]))
 
def remote_repr(arg):
 """return the repr() rendering of the supplied arg """
 return arg
 
if __name__ == '__main__':
 main()

客户端的代码如下：

import xmlrpclib

def main():
 proxy = xmlrpclib.ServerProxy('http://127.0.0.1:7001')
 
 print("Here are the functions supported by this server:")
 
 print("next calculator addtogether: ")
 print(proxy.addtogether('x','y','z'))
 print(proxy.addtogether('x','y','z'))
 
 print(proxy.addtogether('x','y','z'))
 print(proxy.addtogether('x','y','z'))
 for method_name in proxy.system.listMethods():
 if method_name.startswith('system.'):
 continue
 
 signatures = proxy.system.methodSignature(method_name)
 if isinstance(signatures, list) and signatures:
 for signature in signatures:
 print('%s(%s)' %(method_name, signature))
 
 else:
 print('%s(...)' %(method_name,))
 
 method_help = proxy.system.methodHelp(method_name)
 #if method_help:
 # print(' ', methodHelp)
 
 print(proxy.addtogether('x','y','z'))
 print("addtogether result ")
 
if __name__ == '__main__':
 main()

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