高性能web服务器框架Tornado简单实现restful接口及开发实例
有个朋友让我搞搞tornado框架，说实话，这个框架我用的不多。。。
我就把自己的一些个运维研发相关的例子，分享给大家。
怎么安装tornado，我想大家都懂。
pip install tornado
再来说说他的一些个模块，官网有介绍的。我这里再啰嗦的复读机一下，里面掺夹我的理解。
主要模块
web - FriendFeed 使用的基础 Web 框架，包含了 Tornado 的大多数重要的功能，反正你进入就对了。
escape - XHTML, JSON, URL 的编码/解码方法
database - 对 MySQLdb 的简单封装，使其更容易使用，是个orm的东西。
template - 基于 Python 的 web 模板系统，类似jinja2
httpclient - 非阻塞式 HTTP 客户端，它被设计用来和 web 及 httpserver 协同工作，这个类似加个urllib2
auth - 第三方认证的实现（包括 Google OpenID/OAuth、Facebook Platform、Yahoo BBAuth、FriendFeed OpenID/OAuth、Twitter OAuth）
locale - 针对本地化和翻译的支持
options - 命令行和配置文件解析工具，针对服务器环境做了优化，接受参数的
底层模块
httpserver - 服务于 web 模块的一个非常简单的 HTTP 服务器的实现
iostream - 对非阻塞式的 socket 的简单封装，以方便常用读写操作
ioloop - 核心的 I/O 循环
再来说说tornado接受请求的方式：
关于get的方式
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.write("You requested the main page")
class niubi(tornado.web.RequestHandler):
def get(self, story_id):
self.write("xiaorui.cc niubi'id is " + story_id)
application = tornado.web.Application([
(r"/", MainHandler),
(r"/niubi/([0-9]+)", niubi),
])
这样我们访问 /niubi/123123123 就会走niubi这个类，里面的get参数。
关于post的方式
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.write('<html><body><form action="/" method="post">'
'<input type="text" name="message">'
'<input type="submit" value="Submit">'
'</form></body></html>')
def post(self):
self.set_header("Content-Type", "text/plain")
self.write("xiaorui.cc and " + self.get_argument("message"))
在tornado里面，一般get和post都在一个访问路由里面的，只是按照不同method来区分相应的。
扯淡的完了，大家测试下get和post。
import tornado.ioloop
import tornado.web
import json
class hello(tornado.web.RequestHandler):
def get(self):
self.write('Hello,xiaorui.cc')
class add(tornado.web.RequestHandler):
def post(self):
res = Add(json.loads(self.request.body))
self.write(json.dumps(res))
def Add(input):
sum = input['num1'] + input['num2']
result = {}
result['sum'] = sum
return result
application = tornado.web.Application([
(r"/", hello),
(r"/add", add),
])
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
#大家可以写个form测试，也可以用curl -d测试
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