使用volley将数据发布到服务器时出现错误代码400

String url = "https://yourserver.com/api/endpoint";

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

JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, jsonObject,
    new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            // 处理响应
        }
    },
    new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // 处理错误
        }
    }) {
    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        return headers;
    }
};

JSONObject jsonObject = new JSONObject();
try {
    jsonObject.put("key1", "value1");
    jsonObject.put("key2", "value2");
} catch (JSONException e) {
    e.printStackTrace();
}

String url = "https://yourserver.com/api/endpoint";

JSONObject jsonObject = new JSONObject();
try {
    jsonObject.put("key1", "value1");
    jsonObject.put("key2", "value2");
} catch (JSONException e) {
    e.printStackTrace();
}

JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, jsonObject,
    new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            // 处理响应
            Log.d("Response", response.toString());
        }
    },
    new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // 处理错误
            if (error.networkResponse != null) {
                Log.e("Error", "Status code: " + error.networkResponse.statusCode);
                Log.e("Error", "Response body: " + new String(error.networkResponse.data));
            } else {
                Log.e("Error", error.getMessage());
            }
        }
    }) {
    @Override
    public Map<String, String> getHeaders() throws AuthFailureError {
        Map<String, String> headers = new HashMap<>();
        headers.put("Content-Type", "application/json");
        return headers;
    }
};

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