链接：http://demo.pythoner.com/itt2zh/ch2.html
来到了第二章；模板与表单
1 # -*- coding:utf-8 -*-
2
3 __author__ = ‘roy‘
4
5 import os.path
6
7 import tornado.httpserver
8 import tornado.ioloop
9 import tornado.options
10 import tornado.web
11
12 from tornado.options import define, options
13
14 define("port", default=8000, help="run on the given port", type=int)
15
16
17 class IndexHandler(tornado.web.RequestHandler):
18 def get(self):
19 self.render(‘index.html‘)
20
21
22 class PoemPageHandler(tornado.web.RequestHandler):
23 def post(self):
24 noun1 = self.get_argument(‘noun1‘)
25 noun2 = self.get_argument(‘noun2‘)
26 verb = self.get_argument(‘verb‘)
27 noun3 = self.get_argument(‘noun3‘)
28 self.render(‘poem.html‘, roads=noun1, wood=noun2, made=verb,
29 difference=noun3)
30
31
32 if __name__ == ‘__main__‘:
33 tornado.options.parse_command_line()
34 app = tornado.web.Application(
35 handlers=[(r‘/‘, IndexHandler), (r‘/poem‘, PoemPageHandler)],
36 # 模板的路径
37 template_path=os.path.join(os.path.dirname(__file__), "templates")
38 )
39 # 服务器
40 http_server = tornado.httpserver.HTTPServer(app)
41 http_server.listen(options.port)
42 tornado.ioloop.IOLoop.instance().start()
（1）os.path
template_path=os.path.join(os.path.dirname(__file__), "templates")：获取templates的路径
os.path.dirname(__file__):输出本文件的完整路径
os.path.join：链接两个文件名地址
（2）render：渲染模板
1 <!DOCTYPE html> 2 <html> 3 <head><title>Poem Maker Pro</title></head> 4 <body> 5 <h1>Enter terms below.</h1> 6 <form method="post" action="/poem"> 7 <p>Plural noun<br><input type="text" name="noun1"></p> 8 <p>Singular noun<br><input type="text" name="noun2"></p> 9 <p>Verb (past tense)<br><input type="text" name="verb"></p> 10 <p>Noun<br><input type="text" name="noun3"></p> 11 <input type="submit"> 12 </form> 13 </body> 14 </html>
1 <!DOCTYPE html>
2 <html>
3 <head><title>Poem Maker Pro</title></head>
4 <body>
5 <h1>Your poem</h1>
6 <p>Two {{roads}} diverged in a {{wood}}, and I—<br>
7 I took the one less travelled by,<br>
8 And that has {{made}} all the {{difference}}.</p>
9 </body>
10 </html>
（3）tornado的变量里面可以带表达式；标签基本是一样的
（4）static_url 生成静态的 URL
1 # -*- coding:utf-8 -*-
2
3 import os.path
4 import random
5
6 import tornado.httpserver
7 import tornado.ioloop
8 import tornado.options
9 import tornado.web
10
11 from tornado.options import define, options
12
13 define("port", default=8000, help="run on the given port", type=int)
14
15
16 class IndexHandler(tornado.web.RequestHandler):
17 def get(self):
18 self.render(‘index.html‘)
19
20
21 class MungedPageHandler(tornado.web.RequestHandler):
22 def map_by_first_letter(self, text):
23 mapped = dict()
24 for line in text.split(‘\r\n‘):
25 for word in [x for x in line.split(‘ ‘) if len(x) > 0]:
26 if word[0] not in mapped: mapped[word[0]] = []
27 mapped[word[0]].append(word)
28 return mapped
29
30 def post(self):
31 source_text = self.get_argument(‘source‘)
32 text_to_change = self.get_argument(‘change‘)
33 source_map = self.map_by_first_letter(source_text)
34 change_lines = text_to_change.split(‘\r\n‘)
35 self.render(‘munged.html‘, source_map=source_map, change_lines=change_lines,
36 choice=random.choice)
37
38
39 if __name__ == ‘__main__‘:
40 tornado.options.parse_command_line()
41 app = tornado.web.Application(
42 handlers=[(r‘/‘, IndexHandler), (r‘/poem‘, MungedPageHandler)],
43 template_path=os.path.join(os.path.dirname(__file__), "templates"),
44 # 静态文件的路径
45 static_path=os.path.join(os.path.dirname(__file__), "static"),
46 # debug 开启
47 debug=True
48 )
49 http_server = tornado.httpserver.HTTPServer(app)
50 http_server.listen(options.port)
51 tornado.ioloop.IOLoop.instance().start()
时间： 2024-08-07 17:01:00