我们都知道在Web开发中，都需要服务器，比如Java Web开发的Tomcat，WebLogic，WebSphere，现在来看利用Tornado Web Server框架如何写一个简易的Python服务器。
一般来说只需要实现get和post方法就可以了。以上次使用redis数据库的例子说明，数据库插入代码如下：
import redis
import 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()
以上代码插入了数据，那么现在用我们的服务器来访问一些数据。
import json
import redis
import tornado.web
import tornado.httpserver
from 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()
以上代码实现了一个简单的服务器，用于处理http请求。
在浏览器中输入：
http://localhost:8888/deal?website=meituan&city=beijing&year=2013&month=9
即可得到需要的数据。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持找一找教程网。
