如何在Volley中传递对象和字符串作为参数？

public class CustomRequest<T> extends Request<T> {
    private final Gson gson = new Gson();
    private final Class<T> responseType;
    private final Map<String, String> headers;
    private final Map<String, String> params;
    private final Response.Listener<T> listener;

    public CustomRequest(int method, String url, Class<T> responseType, Map<String, String> headers,
                         Map<String, String> params, Response.Listener<T> listener,
                         Response.ErrorListener errorListener) {
        super(method, url, errorListener);
        this.responseType = responseType;
        this.headers = headers;
        this.params = params;
        this.listener = listener;
    }

    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        return headers != null ? headers : super.getHeaders();
    }

    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        return params != null ? params : super.getParams();
    }

    @Override
    protected Response<T> parseNetworkResponse(NetworkResponse response) {
        try {
            String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
            T parsedResponse = gson.fromJson(json, responseType);
            return Response.success(parsedResponse, HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException | JsonSyntaxException e) {
            return Response.error(new ParseError(e));
        }
    }

    @Override
    protected void deliverResponse(T response) {
        listener.onResponse(response);
    }
}

String url = "https://example.com/api/endpoint";
Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Bearer your_token");

Map<String, String> params = new HashMap<>();
params.put("param1", "value1");
params.put("param2", "value2");

CustomRequest<MyResponse> request = new CustomRequest<>(Request.Method.POST, url, MyResponse.class,
        headers, params, new Response.Listener<MyResponse>() {
    @Override
    public void onResponse(MyResponse response) {
        // 处理响应
    }
}, new Response.ErrorListener() {
    @Override
    public void onErrorResponse(VolleyError error) {
        // 处理错误
    }
});

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