Camel http4 producer has "HTTP-QUERY" to support the HTTP query parameters.
https://access.redhat.com/documentation/en-us/red_hat_fuse/7.8/html/apache_camel_component_reference/http4-component#configuring_uri_parameters_2

The multi-valued parameters are a feature that should be supported in the HTTP components, but comma separated format is used.

[Expected Format]
http://localhost:8181/sample/test/hello?ids=Bob&ids=Nancy&ids=David
[Actual Format]
http://localhost:8181/sample/test/hello?ids=[Bob, Nancy, David]

[Steps to reproduce the issue]

• Download and unzip the CodeReadyStudio maven project
• Run the CamelContext
• Check the console log
  expected:
  [XNIO-1 task-1] INFO simple-route - >>> Bob,Nancy,David
  actual:
  [XNIO-1 task-1] INFO simple-route - >>> [Bob, Nancy, David]