Speakers with UTF-8 characters (äöü) are not parsed correctly

[JohannesRabauer]

No description provided.

[AB-xdev]

The problem is that the JVM is using not UTF8 as default encoding.

However ApiClient#deserialize should also not use scanner and better use EntityUtils#toString instead as this method correctly derives the charset from the encountered response.

[AB-xdev]

Problem is located inside OpenAPI generator:
https://github.com/OpenAPITools/openapi-generator/blob/d4e10508cdc7ff50a1addad2ebffd56ebc1f2556/modules/openapi-generator/src/main/resources/Java/libraries/apache-httpclient/ApiClient.mustache#L854-L867

[AB-xdev]

Same problem is described here: OpenAPITools/openapi-generator#16818

[AB-xdev]

Create upstream PR: OpenAPITools/openapi-generator#17998

If this is not merged in time, well should patch this manually (in our openapi template repo).

[AB-xdev]

Fixed by OpenAPIGenerator 7.4+ in f5fcaac#diff-26ec5e493924f1952b7725db35d35c8e5173efac2525b3620dbe03be7a1c9b11