我們都知道在Web開發(fā)中，都需要服務(wù)器，比如Java Web開發(fā)的Tomcat，WebLogic，WebSphere，現(xiàn)在來看利用Tornado Web Server框架如何寫一個簡易的Python服務(wù)器。

一般來說只需要實(shí)現(xiàn)get和post方法就可以了。以上次使用redis數(shù)據(jù)庫的例子說明，數(shù)據(jù)庫插入代碼如下：

import redisimport datetime class Database:  def __init__(self):    self.host = 'localhost'    self.port = 6379    self.write_pool = {}   def add_write(self,website,city,year,month,day,deal_number):    key = '_'.join([website,city,str(year),str(month),str(day)])    val = deal_number    self.write_pool[key] = val   def batch_write(self):    try:      r = redis.StrictRedis(host=self.host,port=self.port)      r.mset(self.write_pool)    except Exception, exception:      print exception       def add_data():  beg = datetime.datetime.now()  db = Database()  for i in range(1,10000):    db.add_write('meituan','beijing',2013,i,1,i)  db.batch_write()  end = datetime.datetime.now()  print end-beg      if __name__ == '__main__':  add_data()

以上代碼插入了數(shù)據(jù)，那么現(xiàn)在用我們的服務(wù)器來訪問一些數(shù)據(jù)。

import jsonimport redisimport tornado.webimport tornado.httpserverfrom tornado.options import define, options define("port", default=8888, type=int) class DealHandler(tornado.web.RequestHandler):  def initialize(self):    self.port = 6379    self.host = "localhost"   def get(self):    website = self.get_argument("website",None)    city  = self.get_argument("city",None)    year  = self.get_argument("year",None)    month  = self.get_argument("month",None)     keyset = []    for i in range(1,31):      key = '_'.join([website,city,year,month,str(i)])      keyset.append(key)     r = redis.StrictRedis(host=self.host,port=self.port)    self.write( json.dumps(r.mget(keyset)) ) class ExampleHandler(tornado.web.RequestHandler):  def get(self):    who = self.get_argument("who", None)    if who:      self.write("Hello, " + who)    else:      self.write("Hello World!")      def post(self):    who = self.get_argument("who", None)    if who:      self.write("Hello, " + who)    else:      self.write("Hello World!") class Application(tornado.web.Application):  def __init__(self):    handlers = [      (r"/", ExampleHandler),      (r"/deal", DealHandler),    ]    settings = dict()    tornado.web.Application.__init__(self, handlers, settings) def create_server():  tornado.options.parse_command_line()  http_server = tornado.httpserver.HTTPServer(Application())  http_server.listen(options.port)  tornado.ioloop.IOLoop.instance().start() if __name__ == "__main__":  create_server()

以上代碼實(shí)現(xiàn)了一個簡單的服務(wù)器，用于處理http請求。

在瀏覽器中輸入：

http://localhost:8888/deal?website=meituan&city=beijing&year=2013&month=9

即可得到需要的數(shù)據(jù)。

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持武林站長站。