Cannot convert PathVariable Map<String,String> when building link

[nealeu]

In building some infrastructure, we want to use a Map for the path variables

public List<Resource> list(@PathVariable Map<String, String> pathVariables) { ... }

However when we want to build a list using a map:

methodOn(TheController.class).list(mapOfPathVariables)

We get:

org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [@org.springframework.web.bind.annotation.PathVariable java.util.Map<java.lang.String, java.lang.String>] to type [java.lang.String]
	at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:324) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
	at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:206) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
	at org.springframework.hateoas.mvc.AnnotatedParametersParameterAccessor$BoundMethodParameter.asString(AnnotatedParametersParameterAccessor.java:192) ~[spring-hateoas-0.23.0.RELEASE.jar:na]
	at org.springframework.hateoas.mvc.ControllerLinkBuilderFactory.linkTo(ControllerLinkBuilderFactory.java:150) ~[spring-hateoas-0.23.0.RELEASE.jar:na]
	at org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo(ControllerLinkBuilder.java:193) ~[spring-hateoas-0.23.0.RELEASE.jar:na]

Looking at exiting PRs, it seems that a similar issue for property placeholders is in progress on @gregturn's PR #602

[gregturn]

Agreed, as that is a facet of Spring MVC I wasn't familiar with. It should be properly supported. I'll try to work on a reproducing test case along with a solution. :)

[nealeu]

Thanks @gregturn. That'd be good.

[upwan111]

It's a very old thread. I am trying to implement the same with 1.0.3.RELEASE version of hateoas but I am getting the same error.
Is there any update planned regarding it?