I have a simple POST request for registering a location in our backend which should respond a string with the locationId and an unique registration code which gets shown for other stuff. In Postman the request looks like: 120:B6IRDAEDZ82BCDMP9QUK which is fine.
So, I've built a retrofit request which simply does the same:
#POST("remote_montage/set_credentials/{locationId}")
suspend fun getRegistrationQrCode(
#Path("locationId") locationId: Int
): Response<String>
Now, if I call it in my repository, it throws me this Error
com.google.gson.stream.MalformedJsonException: Expected value at line 1 column 4 path $
W/System.err: at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1568)
W/System.err: at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:590)
W/System.err: at com.google.gson.stream.JsonReader.peek(JsonReader.java:425)
W/System.err: at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:41)
W/System.err: at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:27)
W/System.err: at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:243)
W/System.err: at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:153)
W/System.err: at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:519)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err: at java.lang.Thread.run(Thread.java:923)
I have no Idea what this means. What Columns? What value? What Line?
The GsonConverterFactory you are providing to retrofit is looking at the response and finding that it is invalid JSON.
You should use ScalarsConverterFactory which is designed to convert string responses
implementation 'com.squareup.retrofit2:converter-scalars:2.1.0'
and add it to your retrofit builder
.addConverterFactory(ScalarsConverterFactory.create())
Related
My server response looks like this:
HTTP/1.1 500 Internal server error
Date: Mon, 24 Oct 2022 10:37:05 GMT
Connection: keep-alive
I have no content in response, except headers.
I call chain.proceed(chain.request()).body()!!.string() inside my Interceptor and after some time of waiting .string() method throws SocketTimeoutException (However I expected to get an empty string there):
java.net.SocketTimeoutException: timeout
W/System.err: at okio.SocketAsyncTimeout.newTimeoutException(JvmOkio.kt:146)
W/System.err: at okio.AsyncTimeout.access$newTimeoutException(AsyncTimeout.kt:158)
W/System.err: at okio.AsyncTimeout$source$1.read(AsyncTimeout.kt:337)
W/System.err: at okio.RealBufferedSource.read(RealBufferedSource.kt:189)
W/System.err: at okhttp3.internal.http1.Http1ExchangeCodec$AbstractSource.read(Http1ExchangeCodec.java:389)
W/System.err: at okhttp3.internal.http1.Http1ExchangeCodec$UnknownLengthSource.read(Http1ExchangeCodec.java:529)
W/System.err: at okhttp3.internal.connection.Exchange$ResponseBodySource.read(Exchange.java:286)
W/System.err: at okio.RealBufferedSource.read(RealBufferedSource.kt:189)
W/System.err: at com.chuckerteam.chucker.internal.support.TeeSource.read(TeeSource.kt:24)
W/System.err: at okio.RealBufferedSource.select(RealBufferedSource.kt:229)
W/System.err: at okhttp3.internal.Util.bomAwareCharset(Util.java:467)
W/System.err: at okhttp3.ResponseBody.string(ResponseBody.java:181)
W/System.err: at ServerErrorConverter.getResponseContent(ServerErrorConverter.kt:156)
I can't find the reason for that behaviour and/or how to fix it. The only what I've found was that if my response contains Content-Length: 0 header, everything works OK.
After getting facebook access token, i use it for login in my own web server. However in the first time, there is warning in the log file, and i can not load data from my server, but when i open app from second times, it load normally.
Below is warning log:
W/System.err: com.google.gson.JsonSyntaxException:
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING
at line 1 column 1 path $ W/System.err: at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:224)
W/System.err: at
retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:39)
W/System.err: at
retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:27)
W/System.err: at
retrofit2.ServiceMethod.toResponse(ServiceMethod.java:122)
W/System.err: at
retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:217) W/System.err:
at retrofit2.OkHttpCall.execute(OkHttpCall.java:180) W/System.err:
at
retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:42) W/System.err: at
io.reactivex.Observable.subscribe(Observable.java:12084) W/System.err:
at
retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
W/System.err: at
io.reactivex.Observable.subscribe(Observable.java:12084) W/System.err:
at
io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35)
W/System.err: at io.reactivex.Single.subscribe(Single.java:3433)
W/System.err: at
io.reactivex.internal.operators.single.SingleDoOnSuccess.subscribeActual(SingleDoOnSuccess.java:35)
W/System.err: at io.reactivex.Single.subscribe(Single.java:3433)
W/System.err: at
io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
W/System.err: at
io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:579)
W/System.err: at
io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
W/System.err: at
io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
W/System.err: at
java.util.concurrent.FutureTask.run(FutureTask.java:266) W/System.err:
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
W/System.err: at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
W/System.err: at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err: at java.lang.Thread.run(Thread.java:764)
W/System.err: Caused by: java.lang.IllegalStateException: Expected
BEGIN_OBJECT but was STRING at line 1 column 1 path $ W/System.err:
at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:385)
W/System.err: at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:213)
What could be causing this?
That error tells you that there is an error when GSON tries to parse the JSON returned by the web service you're calling. In particular, GSON is expecting a JSON object, but it receives a string (see the first line of the error message).
If the error happens only the first time you call it and not the second it means that the web service returns 2 different answers, and GSON can correctly parse the second one, but not the first one.
In order to find out what's wrong, you should provide more details, like your data model and the 2 responses returned by the web service.
I know this type of question has been asked before and i have gone through this but still facing this issue. I was using this example . But while i run my code i got following exception
Failed to detect whether we are running on Google Compute Engine.
java.net.ConnectException: Failed to connect to /169.254.169.254:80
at com.android.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:143)
at com.android.okhttp.internal.io.RealConnection.connect(RealConnection.java:112)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:281)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:461)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:127)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:104)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:981)
at com.google.auth.oauth2.ComputeEngineCredentials.runningOnComputeEngine(ComputeEngineCredentials.java:191)
at com.google.auth.oauth2.DefaultCredentialsProvider.tryGetComputeCredentials(DefaultCredentialsProvider.java:270)
at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentialsUnsynchronized(DefaultCredentialsProvider.java:194)
at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentials(DefaultCredentialsProvider.java:112)
at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:127)
at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:100)
at com.google.api.gax.core.GoogleCredentialsProvider.getCredentials(GoogleCredentialsProvider.java:53)
at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:134)
at com.google.cloud.dialogflow.v2.stub.GrpcSessionsStub.create(GrpcSessionsStub.java:75)
at com.google.cloud.dialogflow.v2.stub.SessionsStubSettings.createStub(SessionsStubSettings.java:100)
at com.google.cloud.dialogflow.v2.SessionsClient.(SessionsClient.java:132)
at com.google.cloud.dialogflow.v2.SessionsClient.create(SessionsClient.java:114)
at com.google.cloud.dialogflow.v2.SessionsClient.create(SessionsClient.java:106)
at com.example.lpt_0096.dialogflowv2.MainActivity$MyAsync.detectIntentStream(MainActivity.java:76)
at com.example.lpt_0096.dialogflowv2.MainActivity$MyAsync.doInBackground(MainActivity.java:61)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
W/System.err: java.io.IOException: The Application Default Credentials are not available. They are available if running in Google Compute Engine. Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS must be defined pointing to a file defining the credentials. See https://developers.google.com/accounts/docs/application-default-credentials for more information.
W/System.err: at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentials(DefaultCredentialsProvider.java:119)
W/System.err: at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:127)
W/System.err: at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:100)
W/System.err: at com.google.api.gax.core.GoogleCredentialsProvider.getCredentials(GoogleCredentialsProvider.java:53)
W/System.err: at com.google.api.gax.rpc.ClientContext.create(ClientContext.java:134)
W/System.err: at com.google.cloud.dialogflow.v2.stub.GrpcSessionsStub.create(GrpcSessionsStub.java:75)
W/System.err: at com.google.cloud.dialogflow.v2.stub.SessionsStubSettings.createStub(SessionsStubSettings.java:100)
W/System.err: at com.google.cloud.dialogflow.v2.SessionsClient.(SessionsClient.java:132)
W/System.err: at com.google.cloud.dialogflow.v2.SessionsClient.create(SessionsClient.java:114)
W/System.err: at com.google.cloud.dialogflow.v2.SessionsClient.create(SessionsClient.java:106)
W/System.err: at com.example.lpt_0096.dialogflowv2.MainActivity$MyAsync.detectIntentStream(MainActivity.java:76)
W/System.err: at com.example.lpt_0096.dialogflowv2.MainActivity$MyAsync.doInBackground(MainActivity.java:61)
W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:333)
W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
W/System.err: at java.lang.Thread.run(Thread.java:764)
from where can i set environment variable in android studio, I am windows user
From the error
java.io.IOException: The Application Default Credentials are not
available. They are available if running in Google Compute Engine.
Otherwise, the environment variable GOOGLE_APPLICATION_CREDENTIALS
must be defined pointing to a file defining the credentials
See
https://developers.google.com/accounts/docs/application-default-credentials
for more information.
You may need to add this in the environment variable path GOOGLE_APPLICATION_CREDENTIALS=path/to/your/service_accont_key_file.json. And should get the json file from here https://cloud.google.com/docs/authentication/getting-started . Also if you don't know how to set environment variable path you can check this https://www.computerhope.com/issues/ch000549.htm
Using Clarifai for Android getting error while invoking Clarifai
W/System.err: java.lang.RuntimeException: Failed to invoke clarifai2.dto.ClarifaiStatus() with no args
W/System.err: at com.google.gson.internal.ConstructorConstructor$2.construct(ConstructorConstructor.java:94)
W/System.err: at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:162)
W/System.err: at com.google.gson.Gson.fromJson(Gson.java:795)
W/System.err: at com.google.gson.Gson.fromJson(Gson.java:859)
W/System.err: at com.google.gson.Gson.fromJson(Gson.java:832)
W/System.err: at clarifai2.api.request.ClarifaiRequest$Impl.executeSync(ClarifaiRequest.java:249)
W/System.err: at clarifai2.api.request.ClarifaiRequest$Builder.executeSync(ClarifaiRequest.java:170)
W/System.err: at com.example.amutgeka.visualclarifia.MainActivity.train(MainActivity.java:120)
W/System.err: at com.example.amutgeka.visualclarifia.MainActivity$1$1.run(MainActivity.java:42)
W/System.err: at java.lang.Thread.run(Thread.java:761)
W/System.err: Caused by: java.lang.InstantiationException: Can't instantiate abstract class clarifai2.dto.ClarifaiStatus
W/System.err: at java.lang.reflect.Constructor.newInstance0(Native Method)
W/System.err: at java.lang.reflect.Constructor.newInstance(Constructor.java:430)
W/System.err: at `enter code here`com.google.gson.internal.ConstructorConstructor$2.construct(ConstructorConstructor.java:91)
W/System.err: ... 9 more
I maintain this library currently. The problem here is that ClarifaiStatus should not be instantiated directly (because it can't). If you look at the source code for the library, you can see that we register a Gson adapter that defines how to construct a ClarifaiStatus (in this case, by calling the constructor for AutoValue_ClarifaiStatus, which is auto-generated code).
For some reason, that adapter doesn't seem to be getting picked up; if it were, com.google.gson.internal.bind.ReflectiveTypeAdapterFactory wouldn't be getting invoked. So because no adapter is getting picked up, Gson falls back to its default behavior of trying to call the no-args constructor via reflection, which is impossible on an abstract class.
We haven't been able to reproduce this error, but we recently updated the client to support older versions of Gson, which might be the issue at hand. Can you make sure that you're using the latest version of the client, which is 2.2.3? Let me know if the issue persists.
I tried adding a retry policy (https://stackoverflow.com/a/22169775/2098493)
but the error persist when file being uploaded is larger than 1mb.
W/System.err: com.android.volley.NoConnectionError: javax.net.ssl.SSLException: Write error: ssl=0xafc3fe00: I/O error during system call, Connection reset by peer
W/System.err: at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:151)
W/System.err: at com.android.volley.NetworkDispatcher.run(NetworkDispatcher.java:112)
W/System.err: Caused by: javax.net.ssl.SSLException: Write error: ssl=0xafc3fe00: I/O error during system call, Connection reset by peer
W/System.err: at com.android.org.conscrypt.NativeCrypto.SSL_write(Native Method)
W/System.err: at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:765)
W/System.err: at com.android.okio.Okio$1.write(Okio.java:70)
W/System.err: at com.android.okio.RealBufferedSink.emitCompleteSegments(RealBufferedSink.java:116)
W/System.err: at com.android.okio.RealBufferedSink.write(RealBufferedSink.java:44)
W/System.err: at com.android.okhttp.internal.http.RetryableSink.writeToSocket(RetryableSink.java:77)
W/System.err: at com.android.okhttp.internal.http.HttpConnection.writeRequestBody(HttpConnection.java:240)
W/System.err: at com.android.okhttp.internal.http.HttpTransport.writeRequestBody(HttpTransport.java:77)
W/System.err: at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:622)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:388)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
W/System.err: at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
W/System.err: at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:25)
W/System.err: at com.android.volley.toolbox.HurlStack.performRequest(HurlStack.java:110)
W/System.err: at com.android.volley.toolbox.BasicNetwork.performRequest(BasicNetwork.java:96)
Thanks for your advice.
The solution was a combination of adding Volley Retry Policy and making sure back-end and server (nodejs/nginx) max uploaded file size are both set correctly.
//where RETRY_DEFAULT_TIMEOUT_MS = 5000, RETRY_DEFAULT_MAX_RETRIES = 3, RETRY_DEFAULT_BACKOFF_MULT = 2.0f
request.setRetryPolicy(new DefaultRetryPolicy(RETRY_DEFAULT_TIMEOUT_MS,
RETRY_DEFAULT_MAX_RETRIES,
RETRY_DEFAULT_BACKOFF_MULT));