swagger-initializer.js is sent endcoded in the JVM's default charset

[roded]

Describe the bug

The swagger-initializer.js file being accepted by the browser is in the the JVM's default charset.
So on systems in which the default charset isn't UTF*, the browser seems to be getting a file which is unreadable.
Downloading the file and opening it up in the system's default encoding shows the correct contents.

To Reproduce
You'll have to load the JVM with a non-default charset.

• What version of spring-boot you are using?
  2.7.10

• What modules and versions of springdoc-openapi are you using?
  springdoc-openapiUi = "org.springdoc:springdoc-openapi-ui:1.7.0"

• What is the actual and the expected result using OpenAPI Description (yml or json)?
  N/A, the OpenAPI JSON loads fine

• Provide with a sample code (HelloController) or Test that reproduces the problem
  N/A

Expected behavior

• A clear and concise description of what you expected to happen.
  The swagger-initializer.js file accepted by the browser should be readable.

• What is the expected result using OpenAPI Description (yml or json)?
  N/A

Screenshots

Additional context
N/A

[bnasslahsen]

@roded,

Your issue is not reproducible.
Without Provide a Minimal, Reproducible Example - with HelloController that reproduces the problem, or directly proposing a PR, we can do nothing for your issuel

[roded]

@bnasslahsen , of course, apologies.

See here for a reproduction: https://github.com/roded/springdoc-openapi-issue-2207

I suspect that the issue is the following snippet in SwaggerIndexPageTransformer which does not specify a charset in getBytes():

if (isIndexFound) {
    String html = defaultTransformations(resource.getInputStream());
    return new TransformedResource(resource, html.getBytes());
}

The issue does not reproduce when running on JDK 18, not sure why that is.

[bnasslahsen]

@roded,

Issue reproduced and should be fixed.

[roded]

Much obliged @bnasslahsen . When is a new release expected? TY

[bnasslahsen]

Hopefully, by the end of this month