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Add problem-details: global exception handling with RFC 9457

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Companion code for "Global Exception Handling with ProblemDetail (RFC 9457)
in Spring Boot 4". Thirteen failures under five handling setups (Boot
defaults, the Boot flag, a ResponseEntityExceptionHandler advice, advice
plus an ErrorController, a catch-all ordered first), validation errors,
i18n, content negotiation, Security's 401/403, silent 500s and decoding
on the client. 16 tests pin the behaviour.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01C3TETMrqVUWeFkNtz3Jbo3
This commit is contained in:
asmhatre
2026-09-11 17:12:22 +00:00
co-authored by Claude Opus 5
parent a065696478
commit 926250e1a9
63 changed files with 2414 additions and 0 deletions
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problem-details/docs/output/silent-500.txt
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# One request to an endpoint that throws IllegalStateException. What reaches the log?
defaults (Boot /error) ERROR lines: 1 stack frames: 87
ERROR 30257 --- [problem-details] [omcat-handler-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request pr
boot-flag ERROR lines: 1 stack frames: 87
ERROR 30389 --- [problem-details] [omcat-handler-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request pr
advice, catch-all logs with errorId ERROR lines: 1 stack frames: 87
ERROR 30521 --- [problem-details] [omcat-handler-1] c.a.p.advice.GlobalExceptionHandler : Unhandled exception, errorId=0becc142-9239-44ba-93ae-c0d479052095
advice, catch-all WITHOUT the log line ERROR lines: 0 stack frames: 0
catchall-first (returns 500, never logs) ERROR lines: 0 stack frames: 0
# And for an exception thrown by a servlet filter (never reaches any advice):
advice,errors - filter exception ERROR lines: 1 stack frames: 68
ERROR 30882 --- [problem-details] [omcat-handler-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception