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()