简易web服务器版本二

# -*- coding:UTF-8 -*-

import os
import BaseHTTPServer
import time
import threading
import urlparse

class ServerHandler(BaseHTTPServer.BaseHTTPRequestHandler):
    
    '''
    简单的Http服务器，处理get请求
    '''
    
    #处理用户的GET请求
    def do_GET(self):
        try:
            str = urlparse.urlparse(self.path)
            print str
            #请求的参数
            args = dict(urlparse.parse_qsl(str.query))
            #请求的路径
            filepath = os.curdir+os.sep+self.path
            #请求路径不能正确打开
#            if ( False == os.path.isfile(filepath)):
#                self.send_response(404)
#                self.end_headers() 
#                return
            
            #处理普通的链接请求
            content = None;
            if ( filepath[-5:] == ".html"  ):
                content = "text/html; charset=utf-8";
            elif ( filepath[-4:] == ".css" ):
                content = "text/css";
            elif ( filepath[-3:] == ".js" ):
                content = "application/x-javascript";
            elif ( filepath[-4:] == ".png" ):
                content = "image/png";
            elif ( filepath[-4:] == ".gif" ):
                content = "image/gif";
            elif ( filepath[-4:] == ".jpg" ):
                content = "image/jpg";                                
            elif ( filepath[-4:] == ".mp3" ):
                content = "audio/mpeg";                
            elif ( filepath[-4:] == ".xml" ):
                content = "text/xml; charset=utf-8";  
                
            #请求是以上文件类型
            if ( content <> None ):
                self.send_response(200)
                self.send_header("Content-Length", os.path.getsize(filepath))
                self.send_header("Content-type", content)
                self.end_headers()        
                with open(filepath , "rb" ) as f:
                    self.wfile.write(f.read());
                    self.wfile.flush();                
                return
            
            #请求不包含操作，直接返回，否则特殊处理
            if (False == args.has_key('cmd') ):
                return
            cmd = args['cmd']
            
            #若请求包含操作
            if cmd == 'searchUser':
                self.send_response(200);
                self.send_header("Content-Type", 'text/html')
                self.end_headers()
                self.wfile.write('<b>成功</b>')
                self.wfile.close()
            
        except:
            print '出现异常'
            self.send_error(404, 'File Not Found:%s' % filepath)
    

class Server:
    def startServer(self):
        server_address = ('', 8000)
        httpd = BaseHTTPServer.HTTPServer(server_address, ServerHandler)
        server_thread = threading.Thread(target=httpd.serve_forever)
        server_thread.setDaemon(True)
        server_thread.start()
        
        
if __name__ == '__main__':
    
    server = Server()
    server.startServer()
    starttime = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(time.time()))  
    print '%s 服务器已启动' % starttime
    time.sleep(50000)