@Operation(summary = "testRequestParameter", description = "test request parameter.")
    @PostMapping(path = "/parameter")
    public Mono<String> testRequestParameter(@RequestParam("parameter_key1") final String parameterKey1,
        final ServerHttpRequest serverHttpRequest) {
        LOGGER.info("parameter_key1: {}, receive param: {}", parameterKey1, serverHttpRequest.getQueryParams());
        return successMono(serverHttpRequest.getQueryParams());
    }
Test for param annotation.

@param parameterKey1     one RequestParam key
@param serverHttpRequest request
@return response
shenyu-examples/shenyu-examples-http-swagger3/src/main/java/org/apache/shenyu/examples/http/controller/RequestController.java