RequestRejectedExceptions pollute logs

[php-coder]

In the 01dc673 commit I configured Jetty to return 404 error for RequestRejectedException but it seems broken again as I see such requests is being logged anyway:

2019-06-30 10:40:13.141  WARN 1131 --- [tp1276261147-18] o.eclipse.jetty.servlet.ServletHandler   : //
org.springframework.security.web.firewall.RequestRejectedException: The request was rejected because the URL was not normalized.
        at org.springframework.security.web.firewall.StrictHttpFirewall.getFirewalledRequest(StrictHttpFirewall.java:248) ~[spring-security-web-4.2.12.RELEASE.jar!/:4.2.12.RELEASE]
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:193) ~[spring-security-web-4.2.12.RELEASE.jar!/:4.2.12.RELEASE]
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177) ~[spring-security-web-4.2.12.RELEASE.jar!/:4.2.12.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:347) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:263) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.24.RELEASE.jar!/:4.3.24.RELEASE]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ~[jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) [jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) [jetty-security-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.servlets.gzip.GzipHandler.handle(GzipHandler.java:529) [jetty-servlets-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.Server.handle(Server.java:499) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) [jetty-server-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544) [jetty-io-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.18.v20160721.jar!/:9.2.18.v20160721]
        at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]

[php-coder]

Idea: we can try to configure LogBack to suppress such messages.

[php-coder]

Related:

• Provide a way to handle RequestRejectedException spring-projects/spring-security#5007
• https://stackoverflow.com/questions/51788764/how-to-intercept-a-requestrejectedexception-in-spring