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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
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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/matrix-catchall-first.txt
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# Profile: catchall-first (spring-boot 4.1.1, spring-framework 7.0.9)
## domain exception (OrderNotFoundException)
$ curl -X GET /orders/999
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders/999","status":500,"title":"Internal Server Error"}
## type mismatch (/orders/abc)
$ curl -X GET /orders/abc
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders/abc","status":500,"title":"Internal Server Error"}
## invalid body (@Valid)
$ curl -X POST /orders -d '{"sku":"","quantity":0,"customerEmail":"nope"}'
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders","status":500,"title":"Internal Server Error"}
## invalid @RequestParam (@Max)
$ curl -X GET /orders?limit=500
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders","status":500,"title":"Internal Server Error"}
## ErrorResponseException (OutOfStock)
$ curl -X POST /orders -d '{"sku":"SKU-2","quantity":3,"customerEmail":"[email protected]"}'
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders","status":500,"title":"Internal Server Error"}
## ResponseStatusException
$ curl -X GET /orders/legacy/7
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders/legacy/7","status":500,"title":"Internal Server Error"}
## unknown path
$ curl -X GET /no-such-thing
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/no-such-thing","status":500,"title":"Internal Server Error"}
## wrong HTTP method
$ curl -X DELETE /orders/1
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders/1","status":500,"title":"Internal Server Error"}
## malformed JSON
$ curl -X POST /orders -d '{"sku":'
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders","status":500,"title":"Internal Server Error"}
## unexpected exception
$ curl -X GET /orders/boom
HTTP 500 Content-Type: application/problem+json
{"detail":"Something went wrong","instance":"/orders/boom","status":500,"title":"Internal Server Error"}
## exception in a servlet filter
$ curl -X GET /orders/1 [X-Tenant: BAD!]
HTTP 500 Content-Type: application/json
{"timestamp":"2026-09-11T17:03:37.596Z","status":500,"error":"Internal Server Error","path":"/orders/1"}
## 401 no credentials
$ curl -X GET /admin/orders
HTTP 401 Content-Type: application/json
{"timestamp":"2026-09-11T17:03:37.638Z","status":401,"error":"Unauthorized","path":"/admin/orders"}
## 403 wrong role
$ curl -X GET /admin/orders [AUTH:user:user]
HTTP 403 Content-Type: application/json
{"timestamp":"2026-09-11T17:03:37.845Z","status":403,"error":"Forbidden","path":"/admin/orders"}