wsgi協(xié)議
關(guān)于wsgi協(xié)議就不贅述了檐嚣，以下是最簡單的符合wsgi的應(yīng)用
def application(environ,star_response):
star_response('200 OK',[('Content-Type','text/html')])
return 'hello xy'
from wsgiref.simple_server import make_server
server = make_server('',8002,application)
server.serve_forever()
app attriabute
class Flask:
def __init__(self, package_name):
self.package_name = package_name
self.root_path = _get_package_path(self.package_name)
self.view_functions = {}
self.error_handlers = {}
self.before_request_funcs = []
self.after_request_funcs = []
self.url_map = Map()
app.run
函數(shù)棧調(diào)用如下：
app.run()
run_simple()
make_server()
srv.serve_forever()
request handler
werkzug.serving.run_wsgi()
execute()
application_iter = app(environ, start_response)
__call__()
self.wsgi_app(environ, start_response)
ctx = self.request_context(environ)
ctx.push()
response = self.full_dispatch_request()
return response(environ, start_response)
full_dispatch_request
preprocess_request
dispatch_request
finalize_request
dispatch_request
def dispatch_request(self):
"""Does the request dispatching. Matches the URL and returns the
return value of the view or error handler. This does not have to
be a response object. In order to convert the return value to a
proper response object, call :func:`make_response`.
"""
req = _request_ctx_stack.top.request
if req.routing_exception is not None:
self.raise_routing_exception(req)
rule = req.url_rule
# dispatch to the handler for that endpoint
return self.view_functions[rule.endpoint](**req.view_args)
