使用 wsgiref 创建WSGI APP

　　

wsgify装饰器将一个普通函数转变成WSGI应用程序。

class webob.dec.wsgify(func=None, RequestClass=None, args=(), kwargs=None, middleware_wraps=None)

from wsgiref.simple_server import make_server
from webob import Request, Response
from webob.dec import *

@wsgify
def test(req):
res = Response()
res.status = 200
res.body = "spch"
return res

class MyApp:
def __call__(self, environ, start_response):

req = Request(environ)

return test(environ, start_response)

application = MyApp()

httpd = make_server('localhost', 8081, application)
httpd.serve_forever()

其中，参数req为一个Request实例，可以通过req读取相应环境变量。

而且，我们可以定制装饰器

from wsgiref.simple_server import make_server
from webob import Request, Response
from webob.dec import *
from webob.exc import *

class MyRequest(Request):
@property
def is_local(self):
return self.remote_addr == '127.0.0.1'

@wsgify(RequestClass=MyRequest)
def myfunc(req):
if req.is_local:
return Response('hi!')
else:
raise HTTPForbidden

class MyApp:
def __call__(self, environ, start_response):

req = Request(environ)

return myfunc(environ, start_response)

application = MyApp()

httpd = make_server('localhost', 8081, application)

如何是本机访问，则输出’hi‘，否则不允许