Expected Behavior

When using Micronaut's HttpClient to make a request to an endpoint using query params that contain spaces, the spaces are correctly encoded as %20 per RFC3986 (URI Generic Syntax).

Actual Behaviour

The spaces are encoded as +. That's because DefaultUriBuilder uses java.net.URLEncoder for query parameter encoding, which in turn is based off of the W3C's HTML 4 specification and subsequently encodes spaces as +

See this StackOverflow answer for a better understanding of some of the confusion. For reference, Spring's UriUtils is correctly based on RFC3986

Steps To Reproduce

No response

Environment Information

No response

Example Application

No response

Version

4.7.1