如何在Volley String请求中给出json参数(Android Studio)

dependencies {
    implementation 'com.android.volley:volley:1.2.0'
}

JSONObject jsonParams = new JSONObject();
try {
    jsonParams.put("name", "John");
    jsonParams.put("age", 25);
} catch (JSONException e) {
    e.printStackTrace();
}

String url = "https://example.com/api/endpoint";
StringRequest request = new StringRequest(Request.Method.POST, url,
        new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                // 请求成功的回调处理
            }
        },
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                // 请求失败的回调处理
            }
        }) {
    @Override
    protected Map<String, String> getParams() {
        Map<String, String> params = new HashMap<>();
        params.put("json", jsonParams.toString());
        return params;
    }
};

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