web python -- WSGI接口GET请求

冷不防 2022-08-01 11:19 226阅读 0赞

执行之前的程序，然后在浏览器中打开 http://localhost:8051/?a=10&b=w&b=r 这样的url。  
  
  
环境变量字典中保存了请求信息REQUEST\_METHOD和QUERY\_STRING。问号之后的内容即为此次请求字符串的值。可以写一个函数对它进行解析，或者直接使用CGI模块的parse\_qs函数，它返回一个字典，其值为一个列表。

下面是一个简单的例子：

#!/usr/bin/env python
    
    from wsgiref.simple_server import make_server
    from cgi import parse_qs, escape
    
    html = """
    <html>
    <body>
       <form method="get" action="">
          <p>
             Age: <input type="text" name="age">
             </p>
          <p>
             Hobbies:
             <input name="hobbies" type="checkbox" value="software"> Software
             <input name="hobbies" type="checkbox" value="tunning"> Auto Tunning
             </p>
          <p>
             <input type="submit" value="Submit">
             </p>
          </form>
       <p>
          Age: %s<br>
          Hobbies: %s
          </p>
       </body>
    </html>"""
    
    def application(environ, start_response):
    
       # Returns a dictionary containing lists as values.
       d = parse_qs(environ['QUERY_STRING'])
    
       # In this idiom you must issue a list containing a default value.
       age = d.get('age', [''])[0] # Returns the first age value.
       hobbies = d.get('hobbies', []) # Returns a list of hobbies.
    
       # Always escape user input to avoid script injection
       age = escape(age)
       hobbies = [escape(hobby) for hobby in hobbies]
    
       response_body = html % (age or 'Empty',
                   ', '.join(hobbies or ['No Hobbies']))
    
       status = '200 OK'
    
       # Now content type is text/html
       response_headers = [('Content-Type', 'text/html'),
                      ('Content-Length', str(len(response_body)))]
       start_response(status, response_headers)
    
       return [response_body]
    
    httpd = make_server('localhost', 8051, application)
    # Now it is serve_forever() in instead of handle_request().
    # In Windows you can kill it in the Task Manager (python.exe).
    # In Linux a Ctrl-C will do it.
    httpd.serve_forever()

来自：http://www.xefan.com/archives/84013.html