Volley: [355] NetworkDispatcher.processRequest: 未处理的异常 java.lang.IllegalArgumentException

Question

您好，我正在尝试运行以下代码将数据发布到在线 MySQL 数据库

    if (data.getCount() > 0) {
                    data.moveToFirst();
                    do {
                        save(orderId,client, data.getString(0),data.getString(3),String.valueOf(finalCost),data.getString(4),longitude,latitude,"_",progressDialog);
                    } while (data.moveToNext());
                       data.close();
                    mydb.clearCart();

    private void save(final String orderId, final String client, final String prodid, final String Seller, final String amount, final String quantity, final double longi, final double lat, final String location, final ProgressDialog progressDialog) {
    String URL_ORDER = "https://foodfuzz.co.ke/foodfuzzbackend/market/orders/order.php";
    StringRequest orderStringRequest = new StringRequest(Request.Method.POST, URL_ORDER,
            //android M

            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    try {
                        JSONObject orderObject = new JSONObject(response);
                        String orderSuccess = orderObject.getString("success");
                        if(orderSuccess.equals("1")){
                            pay.setVisibility(View.GONE);
                            progressDialog.dismiss();
                            Toast.makeText(CheckOutActivity.this,"Order Placed Successfully " , Toast.LENGTH_SHORT).show();
                        }else{
                            Logger.getLogger("Error",orderObject.getString("message"));
                            pay.setVisibility(View.GONE);
                            progressDialog.dismiss();
                            Toast.makeText(CheckOutActivity.this,"Order failed "+orderObject.getString("message") , Toast.LENGTH_SHORT).show();
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                        progressDialog.dismiss();
                        Toast.makeText(CheckOutActivity.this,"Unable to place order " + e.toString(), Toast.LENGTH_SHORT).show();
                        pay.setEnabled(true);
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    progressDialog.dismiss();
                    error.printStackTrace();
                    Toast.makeText(CheckOutActivity.this,"Error placing order " + error.toString(), Toast.LENGTH_SHORT).show();
                    pay.setEnabled(true);
                }
            }){
        protected Map<String, String> getParams() {
            Map<String, String> params = new HashMap<>();
            params.put("orderId",orderId);
            params.put("client", client);
            params.put("name", prodid);
            params.put("seller", Seller);
            params.put("amount", amount);
            params.put("quantity",quantity);
            params.put("longitude",String.valueOf(longi));
            params.put("latitude",String.valueOf(lat));
            params.put("location",location);
            return params;
        }
    };
    RequestQueue orderRequestQueue = Volley.newRequestQueue(this);
    orderRequestQueue.add(orderStringRequest);

}

数据来自 sqlite 数据库，该数据库正在正确检索它。当我在低于 26 的 Android 版本上运行此程序时，它可以正常工作，但在高于 26 的版本上运行时，出现以下错误

    2019-10-30 17:57:45.206 8589-8697/com.otemainc.foodfuzzapp E/Volley: [355] NetworkDispatcher.processRequest: Unhandled exception java.lang.IllegalArgumentException: Request#getParams() or Request#getPostParams() returned a map containing a null key or value: (client, null). All keys and values must be non-null.
java.lang.IllegalArgumentException: Request#getParams() or Request#getPostParams() returned a map containing a null key or value: (client, null). All keys and values must be non-null.
    at com.android.volley.Request.encodeParameters(Request.java:478)
    at com.android.volley.Request.getBody(Request.java:466)
    at com.android.volley.toolbox.HurlStack.addBodyIfExists(HurlStack.java:275)
    at com.android.volley.toolbox.HurlStack.setConnectionParametersForRequest(HurlStack.java:249)
    at com.android.volley.toolbox.HurlStack.executeRequest(HurlStack.java:94)
    at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:123)
    at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:131)
    at com.android.volley.NetworkDispatcher.processRequest(NetworkDispatcher.java:111)
    at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:90)

我是否需要更新我的代码以适应新版本？如果是，那是什么？

Answer 1

它在堆栈跟踪中说

java.lang.IllegalArgumentException：Request#getParams() 或 Request#getPostParams() 返回包含 null 键或值的映射：(client, null)。所有键和值都必须为非空。

protected Map<String, String> getParams() {
    Map<String, String> params = new HashMap<>();
    params.put("orderId",orderId);
    params.put("client", client);  // <<<  HERE
    params.put("name", prodid);
    params.put("seller", Seller);
    params.put("amount", amount);
    params.put("quantity",quantity);
    params.put("longitude",String.valueOf(longi));
    params.put("latitude",String.valueOf(lat));
    params.put("location",location);
    return params;
}

你的client价值就在null这里：params.put("client", client);