救援ActionController :: BadRequest
我正在运行一个rails应用程序，我有一个简单的show动作，其代码如下所示：
@post = Post.find(params[:id]) 因此，如果你去post/ 1例如你会看到post，如果有的话。
我可以捕获无效的params [：id]或无效的params，但我发现了一些奇怪的东西。 昨天有人试图传递给我的东西如下：
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Result:+%ED%E5;
我收到一个ActionController错误的请求exception。 当我访问url / posts / +++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++结果：+％ED％E5; 我看到一个空白页而不是我遇到的类似错误的典型404。 我也注意到，使用param它没有进入posts控制器show action，要么是应用程序控制器（我也试图从那里拯救它）。 我想这是我的一些gem的机架exception，我不知道如何拯救它。
这是我的整个错误回复：
Started GET "/blog/+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++Result:+%ED" for 192.168.1.105 at 2014-03-18 09:45:42 +0200 ActionController::BadRequest (ActionController::BadRequest): actionpack (4.0.2) lib/action_dispatch/routing/route_set.rb:37:in `block in call' actionpack (4.0.2) lib/action_dispatch/routing/route_set.rb:33:in `each' actionpack (4.0.2) lib/action_dispatch/routing/route_set.rb:33:in `call' actionpack (4.0.2) lib/action_dispatch/journey/router.rb:71:in `block in call' actionpack (4.0.2) lib/action_dispatch/journey/router.rb:59:in `each' actionpack (4.0.2) lib/action_dispatch/journey/router.rb:59:in `call' actionpack (4.0.2) lib/action_dispatch/routing/route_set.rb:680:in `call' meta_request (0.2.8) lib/meta_request/middlewares/app_request_handler.rb:13:in `call' rack-contrib (1.1.0) lib/rack/contrib/response_headers.rb:17:in `call' meta_request (0.2.8) lib/meta_request/middlewares/headers.rb:16:in `call' meta_request (0.2.8) lib/meta_request/middlewares/meta_request_handler.rb:13:in `call' bullet (4.7.1) lib/bullet/rack.rb:12:in `call' warden (1.2.3) lib/warden/manager.rb:35:in `block in call' warden (1.2.3) lib/warden/manager.rb:34:in `catch' warden (1.2.3) lib/warden/manager.rb:34:in `call' rack (1.5.2) lib/rack/etag.rb:23:in `call' rack (1.5.2) lib/rack/conditionalget.rb:25:in `call' rack (1.5.2) lib/rack/head.rb:11:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/params_parser.rb:27:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/flash.rb:241:in `call' rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context' rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/cookies.rb:486:in `call' activerecord (4.0.2) lib/active_record/query_cache.rb:36:in `call' activerecord (4.0.2) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call' activerecord (4.0.2) lib/active_record/migration.rb:369:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call' activesupport (4.0.2) lib/active_support/callbacks.rb:373:in `_run__44017112__call__callbacks' activesupport (4.0.2) lib/active_support/callbacks.rb:80:in `run_callbacks' actionpack (4.0.2) lib/action_dispatch/middleware/callbacks.rb:27:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/reloader.rb:64:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/remote_ip.rb:76:in `call' better_errors (1.1.0) lib/better_errors/middleware.rb:58:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call' railties (4.0.2) lib/rails/rack/logger.rb:38:in `call_app' railties (4.0.2) lib/rails/rack/logger.rb:20:in `block in call' activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `block in tagged' activesupport (4.0.2) lib/active_support/tagged_logging.rb:25:in `tagged' activesupport (4.0.2) lib/active_support/tagged_logging.rb:67:in `tagged' railties (4.0.2) lib/rails/rack/logger.rb:20:in `call' quiet_assets (1.0.2) lib/quiet_assets.rb:18:in `call_with_quiet_assets' actionpack (4.0.2) lib/action_dispatch/middleware/request_id.rb:21:in `call' rack (1.5.2) lib/rack/methodoverride.rb:21:in `call' rack (1.5.2) lib/rack/runtime.rb:17:in `call' activesupport (4.0.2) lib/active_support/cache/strategy/local_cache.rb:83:in `call' rack (1.5.2) lib/rack/lock.rb:17:in `call' actionpack (4.0.2) lib/action_dispatch/middleware/static.rb:64:in `call' rack (1.5.2) lib/rack/sendfile.rb:112:in `call' railties (4.0.2) lib/rails/engine.rb:511:in `call' railties (4.0.2) lib/rails/application.rb:97:in `call' rack (1.5.2) lib/rack/content_length.rb:14:in `call' puma (2.7.1) lib/puma/server.rb:486:in `handle_request' puma (2.7.1) lib/puma/server.rb:357:in `process_client' puma (2.7.1) lib/puma/server.rb:250:in `block in run' puma (2.7.1) lib/puma/thread_pool.rb:92:in `call' puma (2.7.1) lib/puma/thread_pool.rb:92:in `block in spawn_thread'
任何想法我怎么能用404拯救这个并避免空白页？
好的，我发现如果你传递类似％ED的东西，这是一个400错误的请求，所以我刚刚创建了一个400静态页面，我在我的exception通知中添加了以下内容：
Myapp::Application.config.middleware.use ExceptionNotification::Rack, :ignore_exceptions => ['ActionController::BadRequest'] + ExceptionNotifier.ignored_exceptions, :ignore_crawlers => %w{Googlebot bingbot}, :email => { :email_prefix => "[Myapp.com Exception Notifier] ", :sender_address => %{"myapp.com" }, :exception_recipients => %w{myemail@myapp.com} }