[FIXED] @RequestParam defaultvalue does not accept enum value as a default value

Issue

I am using spring rest controller.

Here is the code.

@RequestParam(value = "status", required = false, defaultValue = StatusEnum.STATUS.toString())

If i use enum as a defaultValue i am getting The value for annotation attribute RequestParam.defaultValue must be a constant expression.

As per my understanding it should accept enum as a default value.

Please advice.

Solution

Since it has to be a String, and it has to be a constant expression, your only real option here is to use the value that will work for Enum.valueOf(), since that's how this is eventually resolved.

Specifically, yours should read

@RequestParam(value = "status", required = false, defaultValue = "STATUS")

Assuming, of course, that "STATUS" is the string value for StatusEnum.STATUS.

Answered By - biggusjimmus