[我正在获取SQL注入URL请求，例如：？s = index / think \ app / invokefunction＆function = call_user_func_array＆vars [0] = file_put_contents＆vars [1] [] = 12345.php＆vars [1] [1] =
这导致一个：
ActionController::BadRequest (Invalid query parameters: expected Hash (got Array) for param `1'):
在我家#index。我相信错误是在中间件或路由中捕获的，因为我无法在home＃index控制器（或应用程序控制器）中捕获该错误。
这是我对URL的开发日志响应：
ActionController::BadRequest (Invalid query parameters: expected Hash (got Array) for param `1'):
rack (1.6.11) lib/rack/utils.rb:162:in `normalize_params'
rack (1.6.11) lib/rack/utils.rb:163:in `normalize_params'
rack (1.6.11) lib/rack/utils.rb:122:in `block in parse_nested_query'
rack (1.6.11) lib/rack/utils.rb:119:in `each'
rack (1.6.11) lib/rack/utils.rb:119:in `parse_nested_query'
rack (1.6.11) lib/rack/request.rb:371:in `parse_query'
actionpack (4.2.10) lib/action_dispatch/http/request.rb:339:in `parse_query'
rack (1.6.11) lib/rack/request.rb:191:in `GET'
actionpack (4.2.10) lib/action_dispatch/http/request.rb:300:in `GET'
actionpack (4.2.10) lib/action_dispatch/http/parameters.rb:14:in `parameters'
actionpack (4.2.10) lib/action_dispatch/http/filter_parameters.rb:37:in `filtered_parameters'
actionpack (4.2.10) lib/action_controller/metal/instrumentation.rb:22:in `process_action'
actionpack (4.2.10) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
activerecord (4.2.10) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.2.10) lib/abstract_controller/base.rb:137:in `process'
actionview (4.2.10) lib/action_view/rendering.rb:30:in `process'
actionpack (4.2.10) lib/action_controller/metal.rb:196:in `dispatch'
actionpack (4.2.10) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.2.10) lib/action_controller/metal.rb:237:in `block in action'
actionpack (4.2.10) lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
actionpack (4.2.10) lib/action_dispatch/routing/route_set.rb:43:in `serve'
actionpack (4.2.10) lib/action_dispatch/journey/router.rb:43:in `block in serve'
actionpack (4.2.10) lib/action_dispatch/journey/router.rb:30:in `each'
actionpack (4.2.10) lib/action_dispatch/journey/router.rb:30:in `serve'
actionpack (4.2.10) lib/action_dispatch/routing/route_set.rb:817:in `call'
bullet (6.0.2) lib/bullet/rack.rb:12:in `call'
rack (1.6.11) lib/rack/etag.rb:24:in `call'
rack (1.6.11) lib/rack/conditionalget.rb:25:in `call'
rack (1.6.11) lib/rack/head.rb:13:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/flash.rb:260:in `call'
rack (1.6.11) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.6.11) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/cookies.rb:560:in `call'
activerecord (4.2.10) lib/active_record/query_cache.rb:36:in `call'
airbrake (9.4.3) lib/airbrake/rack/middleware.rb:32:in `call!'
airbrake (9.4.3) lib/airbrake/rack/middleware.rb:21:in `call'
activerecord (4.2.10) lib/active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
activerecord (4.2.10) lib/active_record/migration.rb:377:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.2.10) lib/active_support/callbacks.rb:88:in `__run_callbacks__'
activesupport (4.2.10) lib/active_support/callbacks.rb:778:in `_run_call_callbacks'
activesupport (4.2.10) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (4.2.10) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/reloader.rb:73:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
web-console (2.3.0) lib/web_console/middleware.rb:28:in `block in call'
web-console (2.3.0) lib/web_console/middleware.rb:18:in `catch'
web-console (2.3.0) lib/web_console/middleware.rb:18:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.2.10) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.2.10) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.2.10) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.2.10) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.2.10) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.2.10) lib/rails/rack/logger.rb:20:in `call'
request_store (1.4.1) lib/request_store/middleware.rb:19:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.6.11) lib/rack/methodoverride.rb:22:in `call'
rack (1.6.11) lib/rack/runtime.rb:18:in `call'
activesupport (4.2.10) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
rack (1.6.11) lib/rack/lock.rb:17:in `call'
actionpack (4.2.10) lib/action_dispatch/middleware/static.rb:120:in `call'
rack (1.6.11) lib/rack/sendfile.rb:113:in `call'
utf8-cleaner (0.2.5) lib/utf8-cleaner/middleware.rb:21:in `call'
railties (4.2.10) lib/rails/engine.rb:518:in `call'
railties (4.2.10) lib/rails/application.rb:165:in `call'
rack (1.6.11) lib/rack/content_length.rb:15:in `call'
thin (1.7.2) lib/thin/connection.rb:86:in `block in pre_process'
thin (1.7.2) lib/thin/connection.rb:84:in `catch'
thin (1.7.2) lib/thin/connection.rb:84:in `pre_process'
thin (1.7.2) lib/thin/connection.rb:53:in `process'
thin (1.7.2) lib/thin/connection.rb:39:in `receive_data'
eventmachine (1.2.7) lib/eventmachine.rb:195:in `run_machine'
eventmachine (1.2.7) lib/eventmachine.rb:195:in `run'
thin (1.7.2) lib/thin/backends/base.rb:73:in `start'
thin (1.7.2) lib/thin/server.rb:162:in `start'
rack (1.6.11) lib/rack/handler/thin.rb:19:in `run'
rack (1.6.11) lib/rack/server.rb:287:in `start'
railties (4.2.10) lib/rails/commands/server.rb:80:in `start'
railties (4.2.10) lib/rails/commands/commands_tasks.rb:80:in `block in server'
railties (4.2.10) lib/rails/commands/commands_tasks.rb:75:in `tap'
railties (4.2.10) lib/rails/commands/commands_tasks.rb:75:in `server'
railties (4.2.10) lib/rails/commands/commands_tasks.rb:39:in `run_command!'
railties (4.2.10) lib/rails/commands.rb:17:in `<top (required)>'
bin/rails:9:in `require'
bin/rails:9:in `<top (required)>'
spring (2.1.0) lib/spring/client/rails.rb:28:in `load'
spring (2.1.0) lib/spring/client/rails.rb:28:in `call'
spring (2.1.0) lib/spring/client/command.rb:7:in `call'
spring (2.1.0) lib/spring/client.rb:30:in `run'
spring (2.1.0) bin/spring:49:in `<top (required)>'
spring (2.1.0) lib/spring/binstub.rb:11:in `load'
spring (2.1.0) lib/spring/binstub.rb:11:in `<top (required)>'
bin/spring:13:in `require'
bin/spring:13:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
如何确定这些垃圾邮件/ sql注入请求已得到处理，以免引起异常？
在您的应用程序控制器中：
rescue_from ActionController::BadRequest, with: :bad_request
def bad_request(exception)
render status: 400, json: {:error => exception.message}.to_json
end