@ApiImplicitParam does not accept primitives or "string" as valid dataType values

[samuelbchase]

Hi! I'm having an issue with @ApiImplicitParam in version 3.0.0.

When we define an ApiImplicitParam like so:

@ApiImplicitParam(name = ID_HEADER, paramType = "header", required = true, dataType = "string", defaultValue = ID_HEADER_DEFAULT, value = ID_HEADER_DESC)
the generated JSON does not contain the type or the defaultValue. Inside the console I see Unable to interpret the implicit parameter configuration with dataType: "string", which makes sense, as in OperationImplicitParameterReader L173 an exception is thrown, as "string" is indeed not a valid class. This also occurs when I try a primitive type, like "int"

The Bug is that this behaviour was valid before 3.0.0, so ideally it'd be great if we could add that functionality back. It looks like this functionality was re-added in commit 3cd0f7c, but I'm having trouble building locally to validate

The workaround is to just use dataTypeClass, with value String.class, as this executes OperationImplicitParameterReader L171, circumventing the problem. But ideally, it'd be great if the previously exisiting functionality could be brought back

Workaround example: @ApiImplicitParam(name = ID_HEADER, paramType = "header", required = true, dataTypeClass = String.class, defaultValue = ID_HEADER_DEFAULT, value = ID_HEADER_DESC)

I had considered creating a quick code contribution to fix this issue, but then I saw you appear to have fixed it in 3cd0f7c. If that doesn't work, I could make a PR updating the modelSpecification() method to allow param.dataType() to allow the values of "string", and all privitive types.

Thanks!

Additional Info:

Maven imports:
~/fakepath » mvn clean dependency:tree | grep springfox
[INFO] | +- io.springfox:springfox-swagger2:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-spi:jar:3.0.0:compile
[INFO] | | | \- io.springfox:springfox-core:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-schema:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-swagger-common:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-spring-web:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-spring-webmvc:jar:3.0.0:compile
[INFO] | | +- io.springfox:springfox-spring-webflux:jar:3.0.0:compile

[dilipkrish]

Please use dataTypeClass instead to see if that fixes your problem. I'll clarify the docs and make this experience better in the next patch.

[samuelbchase]

Sure, thanks! dataTypeClass does in this case work, I wasn't sure if the feature deprecation was intention.

[Gerado-Ahumada]

I had a same problem, thanks!!!! 🫡