500内部服务器错误时生成JWT令牌使用敲门宝石

Question

我正在尝试用JWT Web令牌认证我的API请求，在我的Ruby on Rails应用程序中使用了Knock gem。

我按照自述文件所述，修改了routes.rb文件。

之后，我尝试使用 cURL 获取令牌以查看是否一切正常。我键入了curl -XPOST -H “Content-Type： application/json” -d '{“auth”： {“email”： “[e-mail]”， “password”： “password”}}' localhost：3000/auth/auth_token （Knock 挂载到 “/auth” 并且用户存在）。

然而，我得到一个500内部服务器错误和这个堆栈跟踪:

`Processing by Knock::AuthTokenController#create as */*
  Parameters: {"auth"=>{"email"=>"[e-mail]", "password"=>"[FILTERED]"}}
  User Load (0.2ms)  SELECT  "users".* FROM "users" WHERE "users"."email" = ? LIMIT 1  [["email", "[e-mail]"]]
  CACHE (0.0ms)  SELECT  "users".* FROM "users" WHERE "users"."email" = ? LIMIT 1  [["email", "[e-mail]"]]
Completed 500 Internal Server Error in 104ms (ActiveRecord: 0.5ms)`

`TypeError (no implicit conversion of nil into String):
  jwt (1.5.2) lib/jwt.rb:73:in 'digest'
  jwt (1.5.2) lib/jwt.rb:73:in 'sign_hmac'
  jwt (1.5.2) lib/jwt.rb:34:in 'sign'
  jwt (1.5.2) lib/jwt.rb:98:in 'encoded_signature'
  jwt (1.5.2) lib/jwt.rb:108:in 'encode'
  knock (1.4.1) app/model/knock/auth_token.rb:13:in 'initialize'
  knock (1.4.1) app/controllers/knock/auth_token_controller.rb:17:in 'new'
  knock (1.4.1) app/controllers/knock/auth_token_controller.rb:17:in 'auth_token'
  knock (1.4.1) app/controllers/knock/auth_token_controller.rb:8:in 'create'
actionpack (4.2.5) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.2.5) lib/abstract_controller/base.rb:198:in `process_action'
  actionpack (4.2.5) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (4.2.5) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (4.2.5) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.5) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.5) lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
  activesupport (4.2.5) lib/active_support/callbacks.rb:505:in `call'
  activesupport (4.2.5) lib/active_support/callbacks.rb:505:in `call'
  activesupport (4.2.5) lib/active_support/callbacks.rb:92:in `__run_callbacks__'
  activesupport (4.2.5) lib/active_support/callbacks.rb:778:in `_run_process_action_callbacks'
  activesupport (4.2.5) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.5) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (4.2.5) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.2.5) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
  activesupport (4.2.5) lib/active_support/notifications.rb:164:in `block in instrument'
  activesupport (4.2.5) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.2.5) lib/active_support/notifications.rb:164:in `instrument'
  actionpack (4.2.5) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.2.5) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.2.5) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (4.2.5) lib/abstract_controller/base.rb:137:in `process'
  actionview (4.2.5) lib/action_view/rendering.rb:30:in `process'
  actionpack (4.2.5) lib/action_controller/metal.rb:196:in `dispatch'
  actionpack (4.2.5) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  actionpack (4.2.5) lib/action_controller/metal.rb:237:in `block in action'
  actionpack (4.2.5) lib/action_dispatch/routing/route_set.rb:76:in `call'
  actionpack (4.2.5) lib/action_dispatch/routing/route_set.rb:76:in `dispatch'
  actionpack (4.2.5) lib/action_dispatch/routing/route_set.rb:45:in `serve'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:30:in `each'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.5) lib/action_dispatch/routing/route_set.rb:817:in `call'
  railties (4.2.5) lib/rails/engine.rb:518:in `call'
  railties (4.2.5) lib/rails/railtie.rb:194:in `public_send'
  railties (4.2.5) lib/rails/railtie.rb:194:in `method_missing'
  actionpack (4.2.5) lib/action_dispatch/routing/mapper.rb:51:in `serve'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:30:in `each'
  actionpack (4.2.5) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.5) lib/action_dispatch/routing/route_set.rb:817:in `call'
  rack (1.6.4) lib/rack/etag.rb:24:in `call'
  rack (1.6.4) lib/rack/conditionalget.rb:38:in `call'
  rack (1.6.4) lib/rack/head.rb:13:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  activerecord (4.2.5) lib/active_record/query_cache.rb:36:in `call'
  activerecord (4.2.5) lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
  activerecord (4.2.5) lib/active_record/migration.rb:377:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.2.5) lib/active_support/callbacks.rb:88:in `__run_callbacks__'
  activesupport (4.2.5) lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
  activesupport (4.2.5) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.5) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/reloader.rb:73:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.2.5) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.2.5) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.2.5) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.2.5) lib/rails/rack/logger.rb:20:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.6.4) lib/rack/runtime.rb:18:in `call'
  activesupport (4.2.5) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
  rack (1.6.4) lib/rack/lock.rb:17:in `call'
  actionpack (4.2.5) lib/action_dispatch/middleware/static.rb:116:in `call'
  rack-cors (0.4.0) lib/rack/cors.rb:80:in `call'
  railties (4.2.5) lib/rails/engine.rb:518:in `call'
  railties (4.2.5) lib/rails/application.rb:165:in `call'
  rack (1.6.4) lib/rack/lock.rb:17:in `call'
  rack (1.6.4) lib/rack/content_length.rb:15:in `call'
  rack (1.6.4) lib/rack/handler/webrick.rb:88:in `service'
  /home/user/.rbenv/versions/2.2.3/lib/ruby/2.2.0/webrick/httpserver.rb:138:in `service'
  /home/user/.rbenv/versions/2.2.3/lib/ruby/2.2.0/webrick/httpserver.rb:94:in `run'
  /home/user/.rbenv/versions/2.2.3/lib/ruby/2.2.0/webrick/server.rb:294:in `block in start_thread'

我不知道是什么导致了这种情况。更奇怪的是，我和一个朋友一起工作，他能够生成一个令牌，即使我们在同一个分支上，环境应该是一样的（显然不是，但我不知道我们有什么不同）。

我有谷歌搜索，但似乎没有人有同样的问题（或者也许我在谷歌上搜索错误的东西）。

我正在使用Ubuntu 14.04 LTS和sqlite的数据库，如果这是任何帮助。

提前感谢！

Answer 1

我最终设法使它发挥作用。

我所做的是

• 卸载Ruby（删除系统范围内对它的任何引用，清理包，更新所有内容并进行dist升级
• 重新安装的Ruby（我使用rbenv，但它应该与您想要的一样）
• 由于我在项目的一个新分支工作，我删除了项目文件夹，并从git中再次克隆了它
• 在正确配置Ruby之后重新安装了bundle（我遵循了rbenv的github页面中的指南）
• 在我的项目中运行bundle，它得到了我需要的所有宝石
• 为rails服务器配置了我的秘密（rakesecret并将其粘贴到config/secret.yml中）

在此之后，它开始工作。我最好的猜测是，要么我配置错误的服务器，要么我有一个损坏的gem。