Spring boot validate each string in a List (kotlin)

Question

I'm struggling with validation in String Boot.

I have the following class in Kotlin:

class ListBlock(
    @field:Size(max = 5)
    val style: String,

    @field:Valid
    @field:Size(max = 10)
    val items: List<@Size(max = 50) String>
)

@field:Size(max = 5) on style works fine by having size > 5

@field:Size(max = 10) on items works fine by having more than 10 strings in the list

I don't get any errors if one of the strings in the list has a size larger than 50 characters.

I'm using spring.boot.starter.validation:2.3.4.RELEASE org.hibernate.validator:6.1.5.Final — Aslak, Nov 06 '20 at 15:58
Already tried this?: https://stackoverflow.com/a/49941439/7919904 — Bram Van Dyck, Nov 09 '20 at 12:46
No, not really, but putting all strings into StringWrapper sounds like a dirty workaround for something that should work. — Aslak, Nov 11 '20 at 12:44

score 3 · Answer 1 · answered Aug 23 '21 at 15:22

3

You have to compile to Java 1.8 or higher (for bytecode to support type annotations), and use Kotlin 1.3.70 or higher with the option -Xemit-jvm-type-annotations for it to work...

See https://youtrack.jetbrains.com/issue/KT-13228

answered Aug 23 '21 at 15:22

Per Huss

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Spring boot validate each string in a List (kotlin)

1 Answers1