@PostMapping("/query")
    public ResultBean blankQueryWithParams(@RequestParam("param") final String param) {
        ResultBean resultBean = new ResultBean();
        resultBean.setCode(200);
        resultBean.setData(param);
        return resultBean;
    }
test blank query with params.

@param param params
@return response body
shenyu-examples/shenyu-examples-http/src/main/java/org/apache/shenyu/examples/http/controller/HttpTestController.java