Minor Acceptance
Repository path parsing needs to be made more robust as currently it can fail for paths containing spaces. Secondly when a path cannot be parsed it should send back a 400 response (bad request) instead of letting the parse exception propagate all the way back to the view servlet.
Example
2017-01-24 07:10:30,646+1100 WARN [qtp5481956-6945] *UNKNOWN org.sonatype.nexus.repository.httpbridge.internal.ViewServlet - Service failure
java.lang.IllegalArgumentException: Illegal character in path at index 34: /javax/servlet/javax.servlet-api/${servletApiVersion}/javax.servlet-api-${servletApiVersion}.pom
at java.net.URI.create(URI.java:852) [na:1.8.0_111]
at org.sonatype.nexus.repository.httpbridge.internal.RepositoryPath.parse(RepositoryPath.java:86) [na:na]
at org.sonatype.nexus.repository.httpbridge.internal.ViewServlet.path(ViewServlet.java:266) [na:na]
at org.sonatype.nexus.repository.httpbridge.internal.ViewServlet.doService(ViewServlet.java:136) [na:na]
at org.sonatype.nexus.repository.httpbridge.internal.ViewServlet.service(ViewServlet.java:117) [na:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [javax.servlet-api:3.1.0]
at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:286) [com.google.inject:4.1.0]
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:276) [com.google.inject:4.1.0]
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:181) [com.google.inject:4.1.0]
at com.google.inject.servlet.DynamicServletPipeline.service(DynamicServletPipeline.java:71) [com.google.inject:4.1.0]
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85) [com.google.inject:4.1.0]
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112) [org.apache.shiro.web:1.3.2]
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82) [com.google.inject:4.1.0]
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) [org.apache.shiro.web:1.3.2]
at org.sonatype.nexus.security.SecurityFilter.executeChain(SecurityFilter.java:85) [org.sonatype.nexus.security:3.2.0.01]
at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) [org.apache.shiro.web:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) [org.apache.shiro.core:1.3.2]
at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) [org.apache.shiro.core:1.3.2]
at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) [org.apache.shiro.core:1.3.2]
at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) [org.apache.shiro.web:1.3.2]
at org.sonatype.nexus.security.SecurityFilter.doFilterInternal(SecurityFilter.java:101) [org.sonatype.nexus.security:3.2.0.01]
at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) [org.apache.shiro.web:1.3.2]
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82) [com.google.inject:4.1.0]