python 之tornado 入门

 1 #!/usr/bin/env python
 2 # -*- coding:utf-8 -*-
 3 # ---------------------------------------
 4 # email  : gengjie@outlook.com
 5 # Create Time: 4/9/16 20:58
 6 # ----------------------------------------
 7 
 8 import json
 9 import time
10 from tornado.web import RequestHandler
11 from tornado.web import Application
12 from tornado.ioloop import IOLoop
13 from tornado.log import app_log
14 
15 
16 class ArgumentHandler(RequestHandler):
17     '''return last name value'''
18     def get(self):
19         self.write('hello {0}'.format(self.get_argument('name')))
20 
21 
22 class ArgumentsHandler(RequestHandler):
23     '''return all name args'''
24     def get(self):
25         self.write('hello {0}'.format(', '.join(self.get_arguments('name'))))
26 
27 
28 class BodyHandler(RequestHandler):
29     '''Get body'''
30     def post(self):
31         body = json.loads(self.request.body.decode())
32         app_log.warning(self.request.body.decode())
33         self.write('hello {0}'.format(body['name']))
34 
35 
36 class PathArgsHandler(RequestHandler):
37     def get(self, *args, **kwargs):
38         self.write('hello {0}'.format(args[0]))
39 
40 
41 class PathKwargsHandler(RequestHandler):
42     def get(self, *args, **kwargs):
43         self.write('hello {0}'.format(kwargs['name']))
44 
45 
46 class RemoteHandler(RequestHandler):
47     '''Get client Ip'''
48     def get(self, *args, **kwargs):
49         self.write(self.request.remote_ip)
50 
51 
52 class FobiddenHandler(RequestHandler):
53     def get(self, *args, **kwargs):
54         self.set_status(403)
55         self.write('forbidden')
56 
57 
58 class CustomStatusHandler(RequestHandler):
59     def get(self, *args, **kwargs):
60         self.set_status(498, reason='Custom Error.')
61         self.finish()
62 
63 
64 class HeaderHandler(RequestHandler):
65     def get(self, *args, **kwargs):
66         self.set_header('X-Header', 'Set_001')
67         self.add_header('X-Header', 'Add_001')
68         self.write('hello head')
69 
70 
71 class MultWriteHandler(RequestHandler):
72     def get(self, *args, **kwargs):
73         self.write('start
')
74         self.flush()
75         for x in range(10):
76             self.write('{0}
'.format(x))
77             self.flush()
78             time.sleep(0.1)
79         self.finish('complete
')
80 
81 
82 if __name__ == '__main__':
83     app = Application(
84         [
85             (r'/', ArgumentHandler),
86             (r'/args', ArgumentsHandler),
87             (r'/body', BodyHandler),
88             (r'/path/args/(.*)', PathArgsHandler),
89             (r'/path/kwargs/(?P<name>.*)', PathKwargsHandler),
90             (r'/ip', RemoteHandler),
91             (r'/403', FobiddenHandler),
92             (r'/498', CustomStatusHandler),
93             (r'/head', HeaderHandler),
94             (r'/multi', MultWriteHandler)
95         ]
96     )
97     app.listen(port=8001, address='0.0.0.0')
98     IOLoop.current().start()