用Cython编写Wrapper（续）

Reiase posted @ 2009年10月14日 17:15 in 编程杂项 , 1931 阅读

上次提到的Demo程序没有入口，这次我尝试为那个Demo添加一个Web接口。

服务器端

首先导入上次编译出来的模块：

1	from a import a

创建class a的一个实例，并开始主循环：

1 2	x = a() thread.start_new_thread(x.mainloop,())

开始处理Web事务处理，首先导入相应模块：

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import os
from BaseHTTPServer import HTTPServer
from CGIHTTPServer import CGIHTTPRequestHandler
from SocketServer import ThreadingMixIn
from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler

创建一个XMLRPCServer，处理Web请求，允许用户发送Web请求来修改参数：

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class a:
global x
def setparam1(self,v):
x.param1 = v
def setparam2(self,v):
x.param2 = v

class myHandler(SimpleXMLRPCRequestHandler,CGIHTTPRequestHandler):
pass

class ThreadingServer(ThreadingMixIn, SimpleXMLRPCServer):
pass;

serveraddr = ('',8080);
srv = ThreadingServer(serveraddr,myHandler);
srv.register_instance(a())
srv.register_introspection_functions()
srv.serve_forever()

Python Web编程部分内容可参考《Python网络编程基础》这本书。

客户端

在客户端使用AJAX技术向服务器发送XMLRPC申请，代码如下：

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<script language="javascript">

function createXmlRPCRequest(){

try{return new XMLHttpRequest();}catch(e){};

}

function sendCall(x,Method,ResponseArea)

{

var xhr = createXmlRPCRequest();

xhr.open("POST","http://127.0.0.1:8080/RPC2",true);

//xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");

var sending;

sending = "<?xml version=\"1.0\"?>\n";

sending = "<methodCall>\n";

sending = "<methodName>" Method "</methodName>\n";

sending = "<params>";

sending = "<param><value>";

sending = "<i4>" x "</i4>";

sending = "</value></param>";

sending = "</params>\n";

sending = "</methodCall>\n";

xhr.onreadystatechange = function (){handleResponse(xhr,ResponseArea);};

xhr.send(sending);

}

function handleResponse(xhr,ResponseArea)

{

var responseOutput = document.getElementById(ResponseArea);

responseOutput.innerHTML = xhr.responseText;

}

</script>

</head>

<body>
<h1>Param1</h1>

<form action="#" method="get">

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="5"/> 5

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="10"/> 10

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="15"/> 15

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="20"/> 20

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="25"/> 25

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="30"/> 30

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam1','Response')" value="100"/> 100

</form>

<br\>

<div id="Response"></div>

<h1>Param2</h1>

<form action="#" method="get">

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="5"/> 5

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="10"/> 10

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="15"/> 15

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="20"/> 20

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="25"/> 25

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="30"/> 30

<input type="radio" name="HTH" onclick = "sendCall(this.value,'setparam2','Response')" value="100"/> 100

</form>

<br\>

<div id="Response"></div>

</body></CENTER>

</html>

Demo程序所有代码可下载：Cython Example.tar.gz

Reiase's Blog

Happy coding

用Cython编写Wrapper（续）

服务器端

客户端