如何在JsonArrayRequest上推送字符串

Question

我想从Listview上的sql获取数据，但仅获取我创建的数据。 但是服务器未收到该值

JsonArrayRequest jsonArrayRequest = new JsonArrayRequest(Request.Method.POST, URL_READ, null,
        new Response.Listener<JSONArray>() {
            @Override
            public void onResponse(JSONArray response) {

            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    progressDialog.dismiss();
                }
            })
        {
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            Map<String, String> params = new HashMap<String, String>();
            params.put("userid", getId);
            return params;
        }
};