小编emg*_*184的帖子

我有一个仆人应用程序，并针对我的问题查看了以下问题，我得到了 400 的预检请求与 OPTIONS 动词：

https://github.com/haskell-servant/servant/issues/154

https://github.com/haskell-servant/servant-swagger/issues/45

https://github.com/haskell-servant/servant/issues/278

以及为它创建的包 https://hackage.haskell.org/package/servant-options

发出以下请求时，我无法解决预检请求问题：

curl -X OPTIONS \
  http://localhost:8081/todos \
  -H 'authorization: JWT xxx' \
  -H 'cache-control: no-cache' \
  -H 'postman-token: 744dff43-a6ad-337d-8b67-5a6f70af8864'

我仍然得到：

Access-Control-Request-Method header is missing in CORS preflight request

尽管按照建议使用了以下中间件：

{-# LANGUAGE TypeFamilies          #-}
{-# LANGUAGE FlexibleContexts      #-}

module Adapter.Servant.Main (main) where

import ClassyPrelude hiding (Handler)
import           Domain.Types.AppEnv
import           Network.Wai.Handler.Warp
import           Network.Wai
import           Network.Wai.Middleware.RequestLogger
-- import qualified Adapter.Servant.TodoAPI as TodoAPI
import qualified Adapter.Servant.TODO.API as TodoAPI
import qualified Adapter.Servant.Swagger as Swagger
import …

我正在尝试在反向代理后面的 docker 容器中运行 pgadmin4。PgAdmin4 正在连接到远程数据库。我遇到的问题是我不断收到以下错误：

\nflask_wtf.csrf.CSRFError: 400 Bad Request: The CSRF token is invalid.\n\n

pgadmin_1  | Traceback (most recent call last):\npgadmin_1  |   File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 1811, in full_dispatch_request\npgadmin_1  |     rv = self.preprocess_request()\npgadmin_1  |   File "/usr/local/lib/python3.8/site-packages/flask/app.py", line 2087, in preprocess_request\npgadmin_1  |     rv = func()\npgadmin_1  |   File "/usr/local/lib/python3.8/site-packages/flask_wtf/csrf.py", line 224, in csrf_protect\npgadmin_1  |     self.protect()\npgadmin_1  |   File "/usr/local/lib/python3.8/site-packages/flask_wtf/csrf.py", line 259, in protect\npgadmin_1  |     self._error_response(e.args[0])\npgadmin_1  |   File "/usr/local/lib/python3.8/site-packages/flask_wtf/csrf.py", line 302, in _error_response\npgadmin_1  |     raise CSRFError(reason)\npgadmin_1  | flask_wtf.csrf.CSRFError: 400 Bad Request: The CSRF …