@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/src/main/java/org/apache/shenyu/examples/http/controller/RequestController.java