
Python中WSGI的框架说明
Application类对WSGI又做了一层简单的封装,由于上面说过WSGI函数返回的是一个可以迭代对象,所以需要实现一个__iter__方法,里面控制了客户端的请求路由并且返回不同的输出。
实现WSGI的框架实例
from wsgiref.simple_server import make_server
class Application(object):
def __init__(self, environ, start_response):
self.start_response = start_response
self.path = environ['PATH_INFO']
def __iter__(self):
if self.path == '/':
status = '200 OK'
response_headers = [('Content-type', 'text/html')]
self.start_response(status, esponse_headers)
yield '<h1>Hello,World!</h1>'.encode('utf-8')
elif self.path == '/wsgi':
status = '200 OK'
response_headers = [('Content-type', 'text/html')]
self.start_response(status, response_headers)
yield '<h1>Hello,WSGI!</h1>'.encode('utf-8')
else:
status = '404 NOT FOUND'
response_headers = [('Content-type', 'text/html')]
self.start_response(status, response_headers)
yield '<h1>404 NOT FOUND</h1>'.encode('utf-8')
if __name__ == "__main__":
app = make_server('127.0.0.1', 8000, Application)
print('Serving HTTP on port 8000...')
app.serve_forever()
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