Android volley在第二次意图之后没有调用getParams()

StringRequest request = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
    @Override
    public void onResponse(String response) {
        // 处理请求成功的响应结果
    }
}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        // 处理请求失败的响应结果
    }
}) {
    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        Map<String, String> params = new HashMap<>();
        params.put("key1", "value1");
        params.put("key2", "value2");
        return params;
    }
};

requestQueue.add(request);