Prior to this change, a resource handler chain configured with a
`VersionResourceResolver` would add the resource version to the request
attributes when serving that resource. This approach would not work when
a `CachingResourceResolver` is configured and the resource is already
cached. Indeed, that code path is not executed when the resource is
resolved from the cache.
This commit adds a new `VersionedResource` interface that's used by the
`VersionResourceResolver`, adding a `getVersion()` method that returns
the version string for that resource. This way, the version information
is cached with the resource itself and the request attributes are no
longer used for this.
Issue: SPR-13817
(cherry picked from commit 473cf9c)
In several places in the spring-webmvc module, URL patterns / objects
relationships are kept in `HashMap`s. When matching with actual URLs,
the algorithm uses a pattern comparator to sort the matching patterns
and select the most specific. But the underlying collection
implementation does not keep the original order which can lead to
inconsistencies.
This commit changes the underlying collection implementation to
`LinkedHashmap`s, in order to keep the insert order if the comparator
does not reorder entries.
Issue: SPR-13798
Before this change the compilation of a method reference or property/field
access was not properly cleaning up the stack if compilation meant
calling a static method or accessing a static field. In these cases there
is no need for a target object on the stack and it should be removed if
present. For a simple expression it is harmless since the end result of
the expression is the thing on the top of the stack, but for nested
expressions if the inner expression suffered this issue, the outer
expression can find itself operating on the wrong element.
The particular issue covered the case of a static field access but this
fix (and associated tests) cover static method, property and field access.
Issue: SPR-13781
JIRA: https://jira.spring.io/browse/SPR-13784
JDK8 and Apache Commons Codec support the RFC 4648
"URL and Filename Safe" Base64 alphabet.
Add methods to `Base64Utils` to support this feature.
