python tornado框架学习
demo1：简单hello world
main.py
#!/usr/bin/env python
#-*-coding: utf-8-*-
# Version: 0.1
# Author: Song Huang <huangxiaohen2738@gmail.com>
# License: Copyright(c) 2015 Song.Huang
# Summary:
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
from tornado.options import define, options
define("port", default=8000, type=int)
#handler 类中的方法都是get、post、delete等
class IndexHandler(tornado.web.RequestHandler):
def get(self):
#get_argument 取函数方法
res = self.get_argument('res', 'hello')
#write 写到web页面上
self.write(res + 'world!')
if __name__ == '__main__':
#解析一个命令行
tornado.options.parse_command_line()
#路径匹配
app = tornado.web.Application(
handlers = [(r'/', IndexHandler)]
)
# 创建一个httpserver实例
http_server = tornado.httpserver.HTTPServer(app)
#监听端口
http_server.listen(options.port)
#启动项
tornado.ioloop.IOLoop.instance().start()
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url访问：
http://10.58.100.90:8000/
页面显示：hello world
http://10.58.100.90:8000/?res
页面显示：world!
--------------------------------------------------------
demo2：简单模板应用
main.py
#!/usr/bin/env python
#-*-coding: utf-8-*-
# Version: 0.1
# Author: Song Huang <huangxiaohen2738@gmail.com>
# License: Copyright(c) 2015 Song.Huang
# Summary:
import os.path
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)
class IndexHandler(tornado.web.RequestHandler):
def get(self):
#渲染模板render
self.render('index.html')
class ContentHandler(tornado.web.RequestHandler):
def post(self):
n1 = self.get_argument('n1')
n2 = self.get_argument('n2')
n3 = self.get_argument('n3')
n4 = self.get_argument('n4')
self.render('content.html', n1=n1, n2=n2, n3=n3,n4=n4)
if __name__ == '__main__':
tornado.options.parse_command_line()
app = tornado.web.Application(
handlers=[(r'/', IndexHandler), (r'/content', ContentHandler)],
#模板路径
template_path=os.path.join(os.path.dirname(__file__), "templates"),
#静态文件路径 js、css
static_path = os.path.join(os.path.dirname(__file__), "static")
)
http_server = tornado.httpserver.HTTPServer(app)
http_server.listen(options.port)
tornado.ioloop.IOLoop.instance().start()
templates文件夹下有另个文件 index.html content.html
index.html
<!DOCTYPE html>
<html>
<head><title>Index</title></head>
<body>
//应用静态资源
<href='static/1.css'>
//快速加载静态资源
<href='{{static_url("1.css")}}'>
<form method="post" action="/content">
<p>N1<br><input type="text" name="n1"></p>
<p>N2<br><input type="text" name="n2"></p>
<p>N3<br><input type="text" name="n3"></p>
<p>N4<br><input type="text" name="n4"></p>
<input type="submit">
</form>
</body>
</html>
content.html
<!DOCTYPE html>
<html>
<head><title>Content</title></head>
<body>
<h1>n1: {{n1}}</h1>
<h1>n2: {{n2}}</h1>
<h1>n3: {{n3}}</h1>
<h1>n4: {{n4}}</h1>
{% if content %}
{%end%}
{%for i in content%}
{%end%}
</body>
</html>
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页面传参的方法{{}}和django类似
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demo3: