xml rpc是使用http协议做为传输协议的rpc机制，使用xml文本的方式传输命令和数据。一个rpc系统，必然包括2个部分：1.rpc client，用来向rpc server调用方法，并接收方法的返回数据；2.rpc server,用于响应rpc client的请求，执行方法，并回送方法执行结果。RPC是Remote Procedure Call的缩写，翻译成中文就是远程过程调用，是一种在本地的机器上调用远端机器上的一个过程（方法）的技术，这个过程也被大家称为“分布式计算”，是为了提高各个分立机器的“互操作性”而发明出来的技术。(XML RPC is a RPC mechanism that uses the HTTP protocol as a transport protocol, and uses XML text to transmit commands and data. A RPC system must consist of 2 parts: 1.rpc client, the method to call RPC server and receive the return data of the method. 2.rpc server is used to respond to RPC client's request, execute the method and send back the execution result of the method. RPC is the abbreviation of Call Remote Procedure, translated into Chinese is a remote procedure call is a call on the local machine on a remote machine a process (method) technology, this process is also known as the "distributed computing", in order to improve each discrete machine "interoperability" the invented technology)