Flask POSTs with Trailing Slash
The documentation states that the preferred way to define a route is to include a trailing slash:
@app.route('/foo/', methods=['GET'])
def get_foo():
pass
This way, a client can GET /foo or GET /foo/ and receive the same result.
However, POSTed methods do not have the same behavior.
from flask import Flask
app = Flask(__name__)
@app.route('/foo/', methods=['POST'])
def post_foo():
return "bar"
app.run(port=5000)
Here, if you POST /foo , it will fail with method not allowed if you are not running in debug mode, or it will fail with the following notice if you are in debug mode:
A request was sent to this URL (http://localhost:5000/foo) but a redirect was issued automatically by the routing system to "http://localhost:5000/foo/". The URL was defined with a trailing slash so Flask will automatically redirect to the URL with the trailing slash if it was accessed without one. Make sure to directly send your POST-request to this URL since we can't make browsers or HTTP clients redirect with form data reliably or without user interaction
Moreover, it appears that you cannot even do this:
@app.route('/foo', methods=['POST'])
@app.route('/foo/', methods=['POST'])
def post_foo():
return "bar"
Or this:
@app.route('/foo', methods=['POST'])
def post_foo_no_slash():
return redirect(url_for('post_foo'), code=302)
@app.route('/foo/', methods=['POST'])
def post_foo():
return "bar"
Is there any way to get POST to work on both non-trailing and trailing slashes?
Please refer to this post: Trailing slash triggers 404 in Flask path rule
You can disable strict slashes to support your needs
Globally:
app = Flask(__name__)
app.url_map.strict_slashes = False
... or per route
@app.route('/foo', methods=['POST'], strict_slashes=False)
def foo():
return 'foo'
You can also check this link. There is separate discussion on github on this one. https://github.com/pallets/flask/issues/1783
您可以检查request.path是否/foo/或不然，然后将其重定向到您想要的位置：
@app.before_request
def before_request():
if request.path == '/foo':
return redirect(url_for('foo'), code=123)
@app.route('/foo/', methods=['POST'])
def foo():
return 'foo'
$ http post localhost:5000/foo
127.0.0.1 - - [08/Mar/2017 13:06:48] "POST /foo HTTP/1.1" 123