Python的http服务(SimpleHTTPServer,BaseHTTPServer,CGIHTTPServer)

from: http://www.lifeba.org/arch/python_http_simplehttpserver_basehttpserver_cgihttpserver.html

Python的“Web服务器模块”有如下三种

一、SimpleHTTPServer：包含执行GET和HEAD请求的SimpleHTTPRequestHandler类。
通过下面命令我们创建了HTTP服务，默认使用8000端口号监听。通过：http://localhost:8000/ 就可以访问，如果文件夹下有index.html，那么这个文件就会成为一个默认页，如果没有这个文件，那么，目录列表就会显示出来。

python -m SimpleHTTPServer
python -m SimpleHTTPServer 8080 #指定端口号

二、BaseHTTPServer，提供基本的Web服务和处理器类，分别是HTTPServer和BaseHTTPRequestHandler。

主要代码（完整代码参考附件下载）：

启动一个8000监听的httpserver，由MyRequestHandler处理请求。

server = HTTPServer(('', 8000 ), MyRequestHandler)
print 'started httpserver...'
server.serve_forever()

MyRequestHandler类

class MyRequestHandler(BaseHTTPRequestHandler):
    def do_GET( self ):
        self .process( 2 )

    def do_POST( self ):
        self .process( 1 )

    def process( self , type ):

        content = ""
        if type = = 1 : #post方法，接收post参数
            datas = self .rfile.read( int ( self .headers[ 'content-length' ]))
            datas = urllib.unquote(datas).decode( "utf-8" , 'ignore' ) #指定编码方式
            datas = transDicts(datas) #将参数转换为字典
            if datas.has_key( 'data' ):
                content = "data:" + datas[ 'data' ] + "\r\n"

        if '?' in self .path:
            query = urllib.splitquery( self .path)
            action = query[ 0 ]

            if query[ 1 ]: #接收get参数
                queryParams = {}
                for qp in query[ 1 ].split( '&' ):
                    kv = qp.split( '=' )
                    queryParams[kv[ 0 ]] = urllib.unquote(kv[ 1 ]).decode( "utf-8" , 'ignore' )
                    content + = kv[ 0 ] + ':' + queryParams[kv[ 0 ]] + "\r\n"

            #指定返回编码
            enc = "UTF-8"
            content = content.encode(enc)
            f = io.BytesIO()
            f.write(content)
            f.seek( 0 )
            self .send_response( 200 )
            self .send_header( "Content-type" , "text/html; charset=%s" % enc)
            self .send_header( "Content-Length" , str ( len (content)))
            self .end_headers()
            shutil.copyfileobj(f, self .wfile)

说明：

1、get测试：http://steven-pc:8000/?test=data

2、通过curl来测试post数据：

curl -d "data=postdata" http://steven-pc:8000?test=post
data:postdata
test:post

3、支持中文：必须在头部加：#encoding=utf-8

三、CGIHTTPServer: 包含处理POST请求和执行CGIHTTPRequestHandler类。

参考 CGI介绍及使用Python来开发CGI应用示例

四、资源下载

BaseHTTPServer DEMO下载： lifeba.org_HTTPServerDemo

================================

a simple multi-process server demo 

import BaseHTTPServer  
import urlparse  
import time
from SocketServer import ThreadingMixIn
import threading

class WebRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):  
    
    def do_POST(self):
        print 'post message'
        parsed_path = urlparse.urlparse(self.path) 
        length = self.headers.getheader('content-length');
        nbytes = int(length)
        data = self.rfile.read(nbytes)
        cur_thread = threading.currentThread()
        print 'Thread:%s\tdata:%s' % (cur_thread.getName(), data)
        for i in range(10) :
            print '%s:waiting...' % cur_thread.getName()
            time.sleep(1)


        message_parts = [ 'just a test']  
        message = '\r\n'.join(message_parts)  
        self.send_response(200)  
        self.end_headers()  
        self.wfile.write(message)  

class ThreadingHttpServer( ThreadingMixIn, BaseHTTPServer.HTTPServer ):
    pass

if __name__ == '__main__':
    #server = BaseHTTPServer.HTTPServer(('0.0.0.0',18460), WebRequestHandler)  
    server = ThreadingHttpServer(('0.0.0.0',18460), WebRequestHandler)  
    ip, port = server.server_address
    # Start a thread with the server -- that thread will then start one
    # more thread for each request
    server_thread = threading.Thread(target=server.serve_forever)
    # Exit the server thread when the main thread terminates
    server_thread.setDaemon(True)
    server_thread.start()
    print "Server loop running in thread:", server_thread.getName()
    while True:
        pass