Support array of scalar values in Jackson2Tokenizer [SPR-16407]

[spring-projects-issues]

Akshay Gupta opened SPR-16407 and commented

When using Spring Webflux's WebClient, it is not possible to deserialize a JSON array of integers using the bodyToFlux method. Spring returns an empty Flux. However, using bodyToMono to get a List<Integer> works and returns a Mono<List<Integer>> as expected.

I believe the problem lies in Jackson2Tokenizer's handling of this scenario. It returns an empty list of tokens. A variation of this issue was addressed in #20714. It addresses top-level scalar values returned as a JSON response. However, the fix for that still doesn't address the above scenario.

Original StackOverflow question

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Affects: 5.0.3

Reference URL: https://github.com/Dolvic/spring-SPR-16407

Issue Links:

• Support top-level scalar values in Jackson2Tokenizer [SPR-16166] #20714 Support top-level scalar values in Jackson2Tokenizer

Referenced from: commits b474916

[spring-projects-issues]

Akshay Gupta commented

Added a sample project to reproduce.

[spring-projects-issues]

Arjen Poutsma commented

Fixed, just in time for 5.0.3!

Thanks for spotting this, and the detailed report.