[BUG][kotlin-spring] Fix Boolean type mismatch for kotlin-spring generator (#21478)

[cgpoh]

This PR will fix #21478. Use String data type for default value in RequestHeader

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[Copilot]

Pull Request Overview

This PR fixes a Boolean type mismatch issue for the kotlin-spring generator by enforcing the default value to be treated as a String in RequestHeader.

• Updated default value quoting in RequestHeader annotation to always wrap the value in double quotes.
• Ensures consistent treatment of default values for Boolean types and potentially related types.

Comments suppressed due to low confidence (1)

modules/openapi-generator/src/main/resources/kotlin-spring/headerParams.mustache:1

• For the RequestHeader annotation, the default value is always wrapped in quotes to enforce its type as a String, which addresses the Boolean mismatch issue. Ensure that this change does not unintentionally affect default values for other parameter types that may not require quoting.

{{#isHeaderParam}}{{#useBeanValidation}}{{>beanValidationCore}}{{/useBeanValidation}}{{#swagger2AnnotationLibrary}}@Parameter(description = "{{{description}}}", `in` = ParameterIn.HEADER{{#required}}, required = true{{/required}}{{#allowableValues}}{{#defaultValue}}, schema = Schema(allowableValues = [{{#values}}"{{{.}}}"{{^-last}}, {{/-last}}{{/values}}]{{^isContainer}}, defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{/isContainer}}){{/defaultValue}}{{/allowableValues}}{{#allowableValues}}{{^defaultValue}}, schema = Schema(allowableValues = [{{#values}}"{{{.}}}"{{^-last}}, {{/-last}}{{/values}}]){{/defaultValue}}{{/allowableValues}}{{^allowableValues}}{{#defaultValue}}{{^isContainer}}, schema = Schema(defaultValue = {{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}{{{defaultValue}}}{{^isString}}"{{/isString}}{{#isString}}{{#isEnum}}"{{/isEnum}}{{/isString}}){{/isContainer}}{{/defaultValue}}{{/allowableValues}}){{/swagger2AnnotationLibrary}}{{#swagger1AnnotationLibrary}}@ApiParam(value = "{{{description}}}"{{#required}}, required = true{{/required}}{{#allowableValues}}, allowableValues = "{{#values}}{{{.}}}{{^-last}}, {{/-last}}{{/values}}"{{/allowableValues}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}){{/swagger1AnnotationLibrary}} @RequestHeader(value = "{{baseName}}", required = {{#required}}true{{/required}}{{^required}}false{{/required}}{{#defaultValue}}, defaultValue = "{{{.}}}"{{/defaultValue}}) {{{paramName}}}: {{>optionalDataType}}{{/isHeaderParam}}

[wing328]

thanks for the fix

i'm able to repeat the issue and can confirm your fix addresses the compilation issue

[cgpoh]

@wing328 , thanks for the review 😀

[Newbrict]

Thanks guys...