레일 앱에 도달하기 전에 랙에서 생성 된 예외를 처리하는 방법

Question

나는 바람둥이 아래에서 실행중인 jruby rails 애플리케이션을 사용하고 있습니다. URL의 잘못된 형식의 쿼리 문자열로 인해 랙이 예외 스택 추적이 프로덕션 모드로 표시되어 초크가 발생합니다. 그걸 우아하게 처리 할 수있는 방법이 있나. 난 레일 애플 리케이션에서 생성 된 예외를 처리합니다 config.exception_app 사용할 수 있다고 생각하지 않습니다. 이 경우, 예외는 레일즈 응용 프로그램에 도착하기 전에 생성됩니다. -이 경우는 ... 그냥 설정 SMT 랙 Y를 A (최소) 랙 오류 응용 프로그램을 구성 할 수있을 것입니다 보인다 (require 'my_error_app'; run MyErrorApp 루비 런타임이 부팅되면

org.jruby.exceptions.RaiseException: (ArgumentError) invalid %-encoding (/"{}\%#$()) 
    at Module.decode_www_form_component(jar:file:/usr/local/apache- 
tomcat/webapps/ROOT/WEB-INF/lib/gems-gems-jruby-jars-1.7.3-lib-jruby-stdlib- 
1.7.3.jar!/META-INF/jruby.home/lib/ruby/1.9/uri/common.rb:898) 
    at Rack::Utils.unescape(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/utils.rb:41) 
    at Rack::Utils.parse_nested_query(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/utils.rb:94) 
    at org.jruby.RubyArray.map(org/jruby/RubyArray.java:2361) 
    at Rack::Utils.parse_nested_query(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/utils.rb:94) 
    at org.jruby.RubyArray.each(org/jruby/RubyArray.java:1613) 
    at Rack::Utils.parse_nested_query(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/utils.rb:93) 
    at Rack::Request.parse_query(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/request.rb:332) 
    at Rack::Request.POST(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/request.rb:209) 
    at Rack::MethodOverride.method_override(/usr/local/apache- 
tomcat/webapps/ROOT/WEB-INF/gems/gems/rack-1.4.5/lib/rack/methodoverride.rb:26) 
    at Rack::MethodOverride.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/methodoverride.rb:14) 
    at Rack::Runtime.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/runtime.rb:17) 
    at ActiveSupport::Cache::Strategy::LocalCache::Middleware.call(/usr/local/apache- 
tomcat/webapps/ROOT/WEB-INF/gems/gems/activesupport- 
3.2.13/lib/active_support/cache/strategy/local_cache.rb:72) 
    at Rack::Lock.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-1.4.5/lib/rack/lock.rb:15) 
    at Rack::Cache::Context.forward(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-cache-1.2/lib/rack/cache/context.rb:136) 
    at Rack::Cache::Context.pass(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-cache-1.2/lib/rack/cache/context.rb:143) 
    at Rack::Cache::Context.invalidate(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-cache-1.2/lib/rack/cache/context.rb:155) 
    at Rack::Cache::Context.call!(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-cache-1.2/lib/rack/cache/context.rb:71) 
    at Rack::Cache::Context.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/rack-cache-1.2/lib/rack/cache/context.rb:51) 
    at Rails::Engine.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/railties-3.2.13/lib/rails/engine.rb:479) 
    at Rails::Application.call(/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/gems/gems/railties-3.2.13/lib/rails/application.rb:223) 
    at Rack::Handler::Servlet.call(file:/usr/local/apache-tomcat/webapps/ROOT/WEB- 
INF/lib/gems-gems-jruby-rack-1.1.13.1-lib-jruby-rack- 
1.1.13.1.jar!/rack/handler/servlet.rb:22) 

Answer 1

다음은 예외)이 jruby.rack.error.app 컨텍스트 매개 변수에 (예를 들어, 당신의 의 web.xml 지저귀와)

Answer 2

내가 정상적으로 예외를 처리하기 위해 랙 미들웨어를 작성 결국있다. MethodOverride 미들웨어 전에 미들웨어를 삽입합니다.이 미들웨어는 예외를 throw합니다.