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Getting error when trying to upload data to server

I have been trying to upload my data from android to my server using java, volley and laravel but I am getting. BasicNetwork.performRequest: Unexpected response code 500. I have used postman to test my api and it is working perfectly well.
What could be the cause?
Java code
RequestQueue queue = Volley.newRequestQueue(this); // this = context
StringRequest postRequest = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>()
{
#Override
public void onResponse(String response) {
// response
pd.dismiss();
Log.i("error", String.valueOf( response.toString()));
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
// error
Toast.makeText(SignUpActivity.this, "Network Error. Please Try Again.", Toast.LENGTH_LONG).show();;
}
}
) {
#Override
protected Map<String, String> getParams()
{
Map<String, String> parameters = new HashMap<String, String>();
parameters.put("email", email);
parameters.put("password", password);
parameters.put("vCode", vCode);
parameters.put("phone",phone);
return parameters;
}
};
queue.add(postRequest);

Code 500 means that there's a problem at server side. If you're using laravel you should have a web server (as apache, nginx...) which generates error logs.
Check error logs and there you may find what the error is (maybe your app is sending data in a way that server doesn't understand, data is not being sent properly...).
Apache error log location in Linux
Nginx error log location

Unexpected response code 401 for Microsoft Graph me/calendars API in Android with volley lib

Getting Unexpected response code Http 401 error while calling GET https://graph.microsoft.com/v1.0/me/calendars API from android using volley library.
I have already added all the required permissions like Calendars.Read, Calendars.Read.Shared, Calendars.ReadWrite, Calendars.ReadWrite.Shared etc
History :
I have set up android project for calling Microsoft Graph API from below link:
https://learn.microsoft.com/en-us/azure/active-directory/develop/tutorial-v2-android
Using dependencies in gradle build file : implementation 'com.microsoft.identity.client:msal:0.3.+'
I am able to login and logout from android application .
Also i am able to access https://graph.microsoft.com/v1.0/me API and getting proper response from microsoft server.
But getting error in other Graph API. Please find below connection method for Calendar API call:
volloy network call for Calendar API
/* Make sure we have a token to send to graph */
if (authResult.getAccessToken() == null) {
return;
}
RequestQueue queue = Volley.newRequestQueue(this);
JsonObjectRequest request = new JsonObjectRequest(Request.Method.GET, "https://graph.microsoft.com/v1.0/me/calendars",
null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
/* Successfully called graph, process data and send to UI */
Log.d(TAG, "Response: " + response.toString());
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d(TAG, "Error: " + error.toString());
}
})
{
#Override
public Map<String, String> getHeaders() {
Map<String, String> headers = new HashMap<>();
headers.put("Authorization", "Bearer " + authResult.getAccessToken());
return headers;
}
};
Log.d(TAG, "Adding HTTP GET to Queue, Request: " + request.toString());
request.setRetryPolicy(new DefaultRetryPolicy(3000,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
queue.add(request);
Response from above API call :
Unexpected response code 401 for https://graph.microsoft.com/v1.0/me/calendars
Kindly help me to call Graph API through android app using volley class.

Why Volley response is received as "[" and not JSON

I am learning about Volley and I don't know why the response from GET method is coming as a single char -> [.
I am using this method to get the JSON response:
public void getJsonMethod() {
// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(context);
// String url = "https://www.w3schools.com/js/myTutorials.txt";
String url = "http://www.google.com"; // with this url I am getting response
// Request a string response from the provided URL.
final StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
#Override
public void onResponse(String response) {
System.out.println("Response is: " + response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.println("Response is not good" + error.getMessage());
}
});
// Add the request to the RequestQueue.
queue.add(stringRequest);
}
When I am using this link I do get a response but when I try to use some link that contains nothing but JSON like this one my response it "[".
I am calling this method from Activity like this:
GetJsonClass getJson = new GetJsonClass(this);
getJson.getJsonMethod();
Any ideas on what am I doing wrong here?
Answer + code
If anyone will start using Volley maybe this can help him :
as David Lacroix said in his answer, I called stringRequest and notJsonArrayRequest.
Here is how it should have been:
public void getJsonMethod() {
// Instantiate the RequestQueue.
RequestQueue queue = Volley.newRequestQueue(context);
String url = "your url";
JsonArrayRequest jsonObjectRequest = new JsonArrayRequest(url, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
System.out.println("this is response good" + response);
}
}, new ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.println("this is response bad" + error);
}
});
queue.add(jsonObjectRequest);
}

See https://developer.android.com/training/volley/request
StringRequest. Specify a URL and receive a raw string in response. See Setting Up a Request Queue for an example.
JsonObjectRequest and JsonArrayRequest (both subclasses of JsonRequest). Specify a URL and get a JSON object or array (respectively) in response.
You should be using a JsonArrayRequest

myTutorials.txt is being served with status code 304 (no proper suffix and MIME type either):
304 Not Modified. If the client has performed a conditional GET request and access is allowed, but the document has not been modified, the server SHOULD respond with this status code. The 304 response MUST NOT contain a message-body, and thus is always terminated by the first empty line after the header fields.
In other terms, what the browser may display is not neccessarily the same what the server has sent. eg. GSON would accept that JSON only with option lenient enabled, because the array has no name.
see RFC 2616.

Volley Server Error with null Network response

Every time I try to use POST method with Volley, I get sever error. I get null value in getCause, and some default value in getNetworkResponse.toString().
If I use GET method, this works fine (I get response from my url).
Can anybody help what can I do?
Map<String, String> jsonParams = new HashMap<String, String>();
jsonParams.put("teststr", "abd");
RequestQueue requestQueue = VolleySingleton.getInstance().getRequestQueue();
JsonObjectRequest request = new JsonObjectRequest(
Request.Method.POST,
url,
new JSONObject(jsonParams),
new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
Toast.makeText(getApplicationContext(), "Success"+response.toString(), Toast.LENGTH_LONG).show();
}catch(Exception e){
Toast.makeText(getApplicationContext(), "JSON ERROR", Toast.LENGTH_LONG).show();
}
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("abd", "Error: " + error
+ ">>" + error.networkResponse.statusCode
+ ">>" + error.networkResponse.data
+ ">>" + error.getCause()
+ ">>" + error.getMessage());
}
}) {
#Override
protected Map<String,String> getParams() {
HashMap<String, String> params = new HashMap<String, String>();
params.put("key", "value");
return params;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json; charset=utf-8");
return headers;
}
};
requestQueue.add(request);
Error Log:
Error:
Error: com.android.volley.ServerError>>404>>[B#42b1e0d0>>null>>null
UPDATE:
networkResponse.statusCode comes as 404, though the url is accessible (and return data if I just use GET method). If I remove header part in POST method, still the same.
the url:
<?php
$response = array();
$jsonString = file_get_contents('php://input');
$jsonObj = json_decode($jsonString, true);
if(!isset($jsonObj['teststr'])){
$response["msg"] = "No data.";
}else{
$response["msg"] = "Success: ".$jsonObj['teststr'];
}
echo json_encode($response);
?>

problem is your Queue.
change your volley code to this:
RequestQueue queue = Volley.newRequestQueue(this);
String URL = EndPoints.BASE_URL + "/call";
StringRequest request = new StringRequest(Request.Method.POST, URL,
new Response.Listener<String>()
{
#Override
public void onResponse(String response) {
Log.d("onResponse", response);
}
},
new Response.ErrorListener()
{
#Override
public void onErrorResponse(VolleyError error) {
NetworkResponse response = error.networkResponse;
String errorMsg = "";
if(response != null && response.data != null){
String errorString = new String(response.data);
Log.i("log error", errorString);
}
}
}
) {
#Override
protected Map<String, String> getParams()
{
Map<String, String> params = new HashMap<String, String>();
params.put("key_1","value_1");
params.put("key_2", "value_2");
Log.i("sending ", params.toString());
return params;
}
};
// Add the realibility on the connection.
request.setRetryPolicy(new DefaultRetryPolicy(10000, 1, 1.0f));
// Start the request immediately
queue.add(request);
and your php (laravel) code to this:
$response['success'] = true;
$response['user']['tell'] = $user->tell;
$response['user']['code'] = $user->code;
$response['user']['time'] = $time;
$response['user']['register_state'] = '1'
return response()->json($response, 200);

First, try to make sure your server works well.
You can use Postman(chrome plug-in) or any other way to send a post request to the url and see what it responses.
After make sure there's no problem with your server, let us solve the problem with volley.
There's some problem with JsonObjectRequest when you use POST method.
like this Volley JsonObjectRequest Post request not working.
I suggest you use StringRequest first and overwrite the getParams method like you did before. After you survive this task, you can try to write your own request, not very difficult but very useful.
I also suggest add request.setShouldCache(false) before requestQueue.add(request);. By default, volley saves the response in its cache and this behavior may cause some strange problem.

Well,I think you can first print the responseCode in your logcat

Add this code before add to queue
request.setRetryPolicy(new DefaultRetryPolicy(0, -1,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
sometimes, request is timeout before your php executed completely. so try this code. maybe can help

maybe it's related to your operator...
I have the same issue sending JasonObject with Volley.
I tested my app on 9-10 devices with two different operators.
The request on one operator returns an Error with everything null or blank data in it, on the other one everything works fine and I get my Response from API successfully.
I have no idea what do operators do that causes this problem...
Maybe they use some kind of firewall that blocks sending JsonObject.

I tried to display the response as a String and the error went off.
Use response.toString() wherever you want to display the error or use it.

In my case, the answer is retry policy setting.
I put 30 seconds the timeout value, it should be 30000, not 30.

try to increase timeout. i had the same issue and the request timeout was the problem.

Android Volley access caching response data

I'm using Volley library to access my server data.Volley has inbuilt caching function.I tried to use that as follows.this out put "CACHED RESPONSE". but i don't know how to access the cached data.
void initHttpCall(){
RequestQueue queue = Volley.newRequestQueue(mcontext);
UOBRequest<RateData> myReq = new UOBRequest<RateData>(Method.GET,
Constants.GET_RATES,
RateData.class,
mlistner,
createMyReqErrorListener()){
#Override
public Map<String, String> getHeaders(){
HashMap<String, String> headers = new HashMap<String, String>();
headers.put("Authorization", getToken());
headers.put("Accept","application/json" );
return headers;
}
};
myReq.setShouldCache(true);
if(queue.getCache().get(Constants.GET_RATES)!=null){
System.out.println("CACHED RESPONSE");
}else{
queue.add(myReq);
}
}
}
This is my response listner and want to get RateData object here.
new Response.Listener<RateData>() {
#Override
public void onResponse(RateData rateData) {
setupCurrencyPager(rateData);
setLastUpdatedTime();
}
});

You misunderstood how Volley's caching system works. The beauty of it is that as a user of Volley, you are unaware of where the response is coming from.
When you add a new request to the RequestQueue, Volley checks if that request already has a cached response. If it does, and that response has not expired yet, it is returned immediately. Otherwise, it goes outside to the network, retrieves the response, caches it and returns it to you.
You don't need that last if statement, simply add it to the queue and Volley will take care of the rest.

try the following code.it will help you sure.
please create a request which you want to pass to server.
JSONObject request = new JSONObject();
request.put("user","user2");
JsonObjectRequest jsObjRequest = new JsonObjectRequest(Request.Method.POST, url, request, new Response.Listener() {
#Override
public void onResponse(JSONObject response) {
// TODO Auto-generated method stub
Log.v("response:-"+response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
queue.add(jsObjRequest);
}