如何在Volley中传递整数作为POST请求中的参数？

String url = "http://example.com/api";
StringRequest request = new StringRequest(Request.Method.POST, url, 
    new Response.Listener<String>() {
        @Override
        public void onResponse(String response) {
            // 处理响应
        }
    },
    new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // 处理错误
        }
    }) {
        @Override
        protected Map<String, String> getParams() {
            Map<String, String> params = new HashMap<>();
            params.put("paramName", String.valueOf(integerValue));
            return params;
        }
    };

Map<String, String> params = new HashMap<>();
params.put("paramName", String.valueOf(integerValue));

return params;

RequestQueue queue = Volley.newRequestQueue(context);
queue.add(request);