Lukasz Lenart created WW-5632:
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Summary: Harden commons-fileupload2 dependency against milestone
binary-incompatibility
Key: WW-5632
URL: https://issues.apache.org/jira/browse/WW-5632
Project: Struts 2
Issue Type: New Feature
Components: Core Interceptors
Reporter: Lukasz Lenart
Fix For: 7.2.0
h3. Background
[WW-5615|https://issues.apache.org/jira/browse/WW-5615] fixed the
{{NoSuchMethodError}}
caused by Apache Commons FileUpload 2.0.0-M5 renaming {{setSizeMax}} ->
{{setMaxSize}}
(and friends), shipped in 7.2.0 via
[#1584|https://github.com/apache/struts/pull/1584].
That fix addressed the *symptom* for one milestone bump but not the underlying
*class of
failure*.
h3. Problem
Struts depends on _milestone_ ({{-M}}) builds of commons-fileupload2, which
break binary
compatibility between milestones. Three gaps remain on {{main}}:
* The renamed setters ({{setMaxSize}}, {{setMaxFileCount}}, {{setMaxFileSize}})
live in
*{{commons-fileupload2-core}}* ({{AbstractFileUpload}}), but only
{{commons-fileupload2-jakarta-servlet6}} is pinned in
{{dependencyManagement}} —
{{-core}} is unmanaged, so a transitive dependency can pull a mismatched
{{-core}}
milestone and reproduce the {{NoSuchMethodError}}.
* The {{maven-enforcer-plugin}} {{dependencyConvergence}} rule sits only in
{{<pluginManagement>}} and is never bound to an active {{<plugins>}} section,
so it
never runs — the build cannot catch a fileupload version skew.
* Downstream consumer runtimes get an opaque, deep-stack {{NoSuchMethodError}}
with no
actionable guidance.
h3. Proposed changes
* *(A1)* Introduce a single {{commons-fileupload2.version}} property and manage
*both*
{{commons-fileupload2-core}} and {{commons-fileupload2-jakarta-servlet6}} at
that version
in {{parent/pom.xml}}, forcing a matched {{-core}} version across the reactor.
* *(A2)* Activate {{maven-enforcer-plugin}} with a fileupload-scoped
{{bannedDependencies}}
rule that fails the build on any commons-fileupload2 version other than the
pinned one
(narrow scope, near-zero blast radius).
* *(B)* Add a once-per-JVM reflective guard in {{AbstractMultiPartRequest}}
that throws a
clear {{StrutsException}} reporting the {{-core}} vs {{-jakarta-servlet6}}
version skew
instead of an opaque {{NoSuchMethodError}}.
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