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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/content-negotiation.txt
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# Accept header vs error body (profile: advice, jackson-dataformat-xml on the classpath)
## A successful response, for comparison
$ curl -H "Accept: application/xml" /orders/1
HTTP/1.1 200
Content-Type: application/xml;charset=UTF-8
<Order><id>1</id><sku>SKU-1</sku><quantity>2</quantity></Order>
## Accept: application/json
$ curl -H "Accept: application/json" /orders/999
HTTP/1.1 404
Content-Type: application/problem+json
{"detail":"Order 999 does not exist","instance":"/orders/999","status":404,"title":"Order not found","type":"https://ankurm.com/problems/order-not-found","orderId":999}
## Accept: application/xml
$ curl -H "Accept: application/xml" /orders/999
HTTP/1.1 404
Content-Type: application/problem+json
{"detail":"Order 999 does not exist","instance":"/orders/999","status":404,"title":"Order not found","type":"https://ankurm.com/problems/order-not-found","orderId":999}
## Accept: application/problem+xml
$ curl -H "Accept: application/problem+xml" /orders/999
HTTP/1.1 404
Content-Type: application/problem+xml
<problem xmlns="urn:ietf:rfc:7807"><detail>Order 999 does not exist</detail><instance>/orders/999</instance><status>404</status><title>Order not found</title><type>https://ankurm.com/problems/order-not-found</type><orderId>999</orderId></problem>
## Accept: text/html
$ curl -H "Accept: text/html" /orders/999
HTTP/1.1 404
Content-Type: application/problem+json
{"detail":"Order 999 does not exist","instance":"/orders/999","status":404,"title":"Order not found","type":"https://ankurm.com/problems/order-not-found","orderId":999}
## Accept: image/png
$ curl -H "Accept: image/png" /orders/999
HTTP/1.1 404
Content-Type: application/problem+json
{"detail":"Order 999 does not exist","instance":"/orders/999","status":404,"title":"Order not found","type":"https://ankurm.com/problems/order-not-found","orderId":999}
## Accept: */*
$ curl -H "Accept: */*" /orders/999
HTTP/1.1 404
Content-Type: application/problem+json
{"detail":"Order 999 does not exist","instance":"/orders/999","status":404,"title":"Order not found","type":"https://ankurm.com/problems/order-not-found","orderId":999}