DetailFragment.java
public void sendPost() {
mAPIService.savePost("O3", 2, "ssfu", "jhsgdhf", 20, "mystring", 1, "UnoiaTech", "hdbjhsdhfjsd").enqueue(new Callback<Post>() {
#Override
public void onResponse(Call<Post> call, Response<Post> response) {
if (response.isSuccessful()) {
Toast.makeText(getActivity(), "Submited" + response.body(), Toast.LENGTH_SHORT).show();
Log.i(TAG, "post submitted to API." + response.body().toString());
}
}
#Override
public void onFailure(Call<Post> call, Throwable t) {
Toast.makeText(getActivity(), "Error To Post API in DetailFragment", Toast.LENGTH_SHORT).show();
Log.e(TAG, "Unable to submit post to API.");
}
});
}
PlanFragment.java
next_plan_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
detailFragment.sendPost();
}
});
ApiUtils.java
public class ApiUtils {
private ApiUtils() {}
public static final String BASE_URL = "http://192.168.100.14:8080";
public static APIService getAPIService() {
return RetrofitClient.getClient(BASE_URL).create(APIService.class);
}
}
RetroClient.java
public class RetrofitClient {
private static Retrofit retrofit = null;
public static Retrofit getClient(String baseUrl) {
if (retrofit==null) {
retrofit = new Retrofit.Builder()
.baseUrl(baseUrl)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}
}
ApiService.java
public interface APIService {
#POST("/deals/deal")
#FormUrlEncoded
Call<Post> savePost(#Field("bookingType") String bookingType,
#Field("dealPrice") int dealPrice,
#Field("description") String description,
#Field("keyword") String keyword,
#Field("originalPrice") int originalPrice,
#Field("plan") String plan,
#Field("shopId") int shopId,
#Field("shopName") String shopName,
#Field("title") String title);
}
Showing error
FATAL EXCEPTION: main
Process: googlemap.arun.com.mywork2, PID: 20969
java.lang.NullPointerException: Attempt to invoke interface method
'retrofit2.Call
googlemap.arun.com.mywork2.data.remote.APIService.savePost(java.lang.String,
int, java.lang.String, java.lang.String, int, java.lang.String, int,
java.lang.String, java.lang.String)' on a null object reference
at
googlemap.arun.com.mywork2.DetailFragment.sendPost(DetailFragment.java:104)
at
googlemap.arun.com.mywork2.PlanFragment$5.onClick(PlanFragment.java:85)
at android.view.View.performClick(View.java:5272)
at android.view.View$PerformClick.run(View.java:21528)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:207)
at android.app.ActivityThread.main(ActivityThread.java:5857)
at java.lang.reflect.Method.invoke(Native Method)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1026)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:887)
Related
If I send multiple commands to the same aggregate, only the first is handled.
Is this a configuration problem, or am I missing something?
The message I am getting after the 2nd command is send:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.axonframework.commandhandling.CommandExecutionException: Cannot invoke "Object.hashCode()" because "key" is null
The service method where I do my sending of the command is:
public void maakAanvraag() {
UUID aanvraagId = UUID.randomUUID();
commandGateway.sendAndWait(
VerwerkAanvraag.builder()
.aanvraagId(aanvraagId)
.build()
);
commandGateway.sendAndWait(
VerwerkPersoonsgegevensVastgesteld.builder()
.aanvraagId(aanvraagId)
.build()
);
commandGateway.sendAndWait(
VerwerkOrganisatiegegevensVastgesteld.builder()
.aanvraagId(aanvraagId)
.organisatieId(organisatieView.getOrganisatieId())
.rolOrganisatie(rolOrganisatie)
.build()
);
commandGateway.sendAndWait(
VerwerkBeperkingErkenningsdoelGematcht.builder()
.aanvraagId(aanvraagId)
.build());
}
The aggregate I am using is:
#Aggregate
#Getter
#NoArgsConstructor
public class Aanvraag {
public static final String META_DATA_ZAAKNUMMER = "aanvraag_zaaknummer";
#AggregateIdentifier
private UUID aanvraagId;
#CommandHandler
public Aanvraag(VerwerkAanvraag command) {
AanvraagGeregistreerd aanvraagGeregistreerd =
AanvraagGeregistreerd.builder()
.aanvraagId(command.getAanvraagId())
.build();
apply(aanvraagGeregistreerd, MetaData.with(META_DATA_ZAAKNUMMER, "123456789"));
}
#EventSourcingHandler
public void on(AanvraagGeregistreerd event) {
aanvraagId = event.getAanvraagId();
}
#CommandHandler
public void verwerkOrganisatiegegevensVastgesteld(VerwerkOrganisatiegegevensVastgesteld command) {
OrganisatiegegevensVastgesteld persoonsgegevensVastgesteld =
OrganisatiegegevensVastgesteld.builder()
.aanvraagId(command.getAanvraagId())
.build();
apply(persoonsgegevensVastgesteld);
}
#EventSourcingHandler
public void on(OrganisatiegegevensVastgesteld event) {
aanvraagId = event.getAanvraagId();
}
#CommandHandler
public void verwerkPersoonsgegevensVastgesteld(VerwerkPersoonsgegevensVastgesteld command) {
PersoonsgegevensVastgesteld persoonsgegevensVastgesteld =
PersoonsgegevensVastgesteld.builder()
.aanvraagId(command.getAanvraagId())
.build();
apply(persoonsgegevensVastgesteld);
}
#EventSourcingHandler
public void on(PersoonsgegevensVastgesteld event) {
aanvraagId = event.getAanvraagId();
}
#CommandHandler
public void verwerkBeperkingErkenningsdoelGematcht(VerwerkBeperkingErkenningsdoelGematcht command) {
BeperkingErkenningsdoelGematcht beperkingErkenningsdoelGematcht =
BeperkingErkenningsdoelGematcht.builder()
.aanvraagId(command.getAanvraagId())
.build();
apply(beperkingErkenningsdoelGematcht);
}
#EventSourcingHandler
public void on(BeperkingErkenningsdoelGematcht event) {
aanvraagId = event.getAanvraagId();
}
}
The project uses Spring Boot 2.6.6 with axon-spring-boot-starter 4.5.9
It al runs with Java Temurin 17.0.3
We solved the problem.
Issue had nothing to do with Axon.
The problem was an Logging interceptor.
After removing this log interceptor the Axon worked as expected.
I'm using spring boot 2.1.7.RELEASE and spring-kafka 2.2.8.RELEASE.And I'm using #KafkaListener annotation to create a consumer and I'm using all default settings for the consumer.And I'm using below configuration as specified in the Spring-Kafka documentation.
// other props
props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, ErrorHandlingDeserializer2.class);
props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, ErrorHandlingDeserializer2.class);
props.put(ErrorHandlingDeserializer.KEY_DESERIALIZER_CLASS, StringDeserializer.class);
props.put(ErrorHandlingDeserializer.VALUE_DESERIALIZER_CLASS, AvroDeserializer.class.getName());
return new DefaultKafkaConsumerFactory<>(props);
Now, I've implemented my custom SeekToCurrentErrorHandler by extending SeekToCurrentErrorHandler as per the below thread but the record value is coming as null and the record key is not in a readable format. Please suggest me how can i get the record key and value?
How to capture the exception and message key when using ErrorHandlingDeserializer2 to handle exceptions during deserialization
Here is my custom SeekToCurrentErrorHandler code
#Component
public class MySeekToCurrentErrorHandler extends SeekToCurrentErrorHandler {
private final MyDeadLetterRecoverer deadLetterRecoverer;
#Autowired
public MySeekToCurrentErrorHandler(MyDeadLetterRecoverer deadLetterRecoverer) {
super(-1);
this.deadLetterRecoverer = deadLetterRecoverer;
}
#Override
public void handle(Exception thrownException, List<ConsumerRecord<?, ?>> data, Consumer<?, ?> consumer, MessageListenerContainer container) {
if (thrownException instanceof DeserializationException) {
//Improve to support multiple records
DeserializationException deserializationException = (DeserializationException) thrownException;
deadLetterRecoverer.accept(data.get(0), deserializationException);
ConsumerRecord<?, ?>. consumerRecord = data.get(0);
sout(consumerRecord.key());
sout(consumerRecord.value());
} else {
//Calling super method to let the 'SeekToCurrentErrorHandler' do what it is actually designed for
super.handle(thrownException, data, consumer, container);
}
}
}
If the key fails deserialization, the original byte[] can be obtained by calling getData() on the exception.
Similarly, if the value fails deserialization, use getData() to get the original data.
The DeadLetterPublishingRecoverer does this (since 2.3).
You can tell which of the key or value failed by calling isKey() on the exception.
EDIT
I was wrong, the key and value are available if the value or key failed.
This is written with Boot 2.3.4:
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
SeekToCurrentErrorHandler errorHandler(ProducerFactory<String, String> pf) {
Map<String, Object> configs = new HashMap<>(pf.getConfigurationProperties());
configs.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, ByteArraySerializer.class);
configs.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, ByteArraySerializer.class);
ProducerFactory<byte[], byte[]> bytesPF = new DefaultKafkaProducerFactory<>(configs);
KafkaOperations<byte[], byte[]> template = new KafkaTemplate<>(bytesPF);
return new SeekToCurrentErrorHandler(new DeadLetterPublishingRecoverer(template),
new FixedBackOff(1000, 5));
}
#KafkaListener(id = "so64597061", topics = "so64597061",
properties = {
ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG
+ ":org.springframework.kafka.support.serializer.ErrorHandlingDeserializer",
ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG
+ ":org.springframework.kafka.support.serializer.ErrorHandlingDeserializer",
ErrorHandlingDeserializer.KEY_DESERIALIZER_CLASS
+ ":com.example.demo.Application$FailSometimesDeserializer",
ErrorHandlingDeserializer.VALUE_DESERIALIZER_CLASS
+ ":com.example.demo.Application$FailSometimesDeserializer"
})
public void listen(String val, #Header(name = KafkaHeaders.RECEIVED_MESSAGE_KEY) String key) {
System.out.println(key + ":" + val);
}
#KafkaListener(id = "so64597061.dlt", topics = "so64597061.DLT",
properties = {
ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG
+ ":org.apache.kafka.common.serialization.ByteArrayDeserializer",
ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG
+ ":org.apache.kafka.common.serialization.ByteArrayDeserializer"
})
public void dltListen(byte[] val, #Header(name = KafkaHeaders.RECEIVED_MESSAGE_KEY, required = false) byte[] key) {
String keyStr = key != null ? new String(key) : null;
String valStr = val != null ? new String(val) : null;
System.out.println("DLT:" + keyStr + ":" + valStr);
}
#Bean
public ApplicationRunner runner(KafkaTemplate<String, String> template) {
return args -> {
template.send("so64597061", "foo", "bar");
template.send("so64597061", "fail", "keyFailed");
template.send("so64597061", "valueFailed", "fail");
};
}
#Bean
public NewTopic topic() {
return TopicBuilder.name("so64597061").partitions(1).replicas(1).build();
}
#Bean
public NewTopic dlt() {
return TopicBuilder.name("so64597061.DLT").partitions(1).replicas(1).build();
}
public static class FailSometimesDeserializer implements Deserializer<byte[]> {
#Override
public void configure(Map<String, ?> configs, boolean isKey) {
}
#Override
public byte[] deserialize(String topic, byte[] data) {
return data;
}
#Override
public void close() {
}
#Override
public byte[] deserialize(String topic, Headers headers, byte[] data) {
String string = new String(data);
if ("fail".equals(string)) {
throw new RuntimeException("fail");
}
return data;
}
}
}
spring.kafka.consumer.auto-offset-reset=earliest
foo:bar
DLT:fail:keyFailed
DLT:valueFailed:fail
I have some ASP.NET Core MVC middleware to catch unhandled exceptions that I would like to return a response from.
While it is easy to just httpContext.Response.WriteAsync to write a string and e.g. use JsonSerializer to serialise an object to a string, I would like to use the standard serialisation settings and content negotiation so that if I change my default output formatting to XML or a text/xml accept header is sent when I have multiple output formatters configured then XML is returned, as it does if I return an ObjectResult from a controller.
Does anyone know how this can be achieved in middleware?
Here is my code so far which only writes JSON:
public class UnhandledExceptionMiddleware
{
private readonly RequestDelegate _next;
private readonly IOutputFormatter _outputFormatter;
private readonly IHttpResponseStreamWriterFactory _streamWriterFactory;
public UnhandledExceptionMiddleware(RequestDelegate next, JsonOutputFormatter outputFormatter, IHttpResponseStreamWriterFactory streamWriterFactory)
{
_next = next;
_outputFormatter = outputFormatter;
_streamWriterFactory = streamWriterFactory;
}
public async Task Invoke(HttpContext context)
{
try
{
await _next(context);
}
catch (Exception ex)
{
await HandleExceptionAsync(context, ex);
}
}
private async Task HandleExceptionAsync(HttpContext context, Exception exception)
{
var error = new ErrorResultModel("Internal Server Error", exception.Message, exception.StackTrace);
context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;
await _outputFormatter.WriteAsync(new OutputFormatterWriteContext(context, _streamWriterFactory.CreateWriter, typeof(ErrorResultModel), error));
}
}
where ErrorResultModel is defined as:
public class ErrorResultModel
{
public string ResultMessage { get; };
public string ExceptionMessage { get; };
public string ExceptionStackTrace { get; };
public ErrorResultModel(string resultMessage, string exceptionMessage, string exceptionStackTrace)
{
ResultMessage = resultMessage;
ExceptionMessage = exceptionMessage;
ExceptionStackTrace = exceptionStackTrace;
}
}
This is not possible in ASP.NET Core 2.0 MVC.
This will be possible in 2.1:
public static class HttpContextExtensions
{
private static readonly RouteData EmptyRouteData = new RouteData();
private static readonly ActionDescriptor EmptyActionDescriptor = new ActionDescriptor();
public static Task WriteResultAsync<TResult>(this HttpContext context, TResult result)
where TResult : IActionResult
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var executor = context.RequestServices.GetService<IActionResultExecutor<TResult>>();
if (executor == null)
{
throw new InvalidOperationException($"No result executor for '{typeof(TResult).FullName}' has been registered.");
}
var routeData = context.GetRouteData() ?? EmptyRouteData;
var actionContext = new ActionContext(context, routeData, EmptyActionDescriptor);
return executor.ExecuteAsync(actionContext, result);
}
}
public class Program : StartupBase
{
public static Task Main(string[] args)
{
return BuildWebHost(args).RunAsync();
}
public static IWebHost BuildWebHost(string[] args)
{
return new WebHostBuilder().UseStartup<Program>().UseKestrel().Build();
}
public override void ConfigureServices(IServiceCollection services)
{
services.AddMvcCore().AddJsonFormatters();
}
public override void Configure(IApplicationBuilder app)
{
app.Use((ctx, next) =>
{
var model = new Person("Krisian", "Hellang");
var result = new ObjectResult(model);
return ctx.WriteResultAsync(result);
});
}
}
public class Person
{
public Person(string firstName, string lastName)
{
FirstName = firstName;
LastName = lastName;
}
public string FirstName { get; }
public string LastName { get; }
}
In my spring mvc web-application i use a generic converter that converts String (id) to Company by fetch using (service and dao) components
first of all in my MVC-config i add the converter like follow :
#Override
public void addFormatters(FormatterRegistry registry) {
registry.addConverter(new GenericIdToCompanyConverter(new CompanyServiceImp()));
}
companyService
#Service
#Transactional
#Qualifier("companyService")
public class CompanyServiceImp implements ICompanyService {
#Resource
#Qualifier("companyDAO")
private ICompanyDao dao;
public void setDao(ICompanyDao dao) {
this.dao = dao;
}
#Override
public Company find(Long id) throws BusinessException {
Company current = dao.find(id);
if(current == null) {
throw new BusinessException("notFound");
}
return current;
}
....
}
Generic converter :
public class GenericIdToCompanyConverter implements GenericConverter {
private ICompanyService companyService;
public GenericIdToCompanyConverter(ICompanyService companyService) {
super();
this.companyService = companyService;
}
#Override
public Set<ConvertiblePair> getConvertibleTypes() {
ConvertiblePair[] pairs = new ConvertiblePair[] { new ConvertiblePair(Number.class, Company.class), new ConvertiblePair(String.class, Company.class) };
return ImmutableSet.copyOf(pairs);
}
#Override
public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
long id = 0;
if( sourceType.getType() == String.class) {
try {
id = Long.valueOf((String) source);
}catch(NumberFormatException e) {
return null;
}
}else if( sourceType.getType() == Number.class) {
id = (Long) source;
}else {
return null;
}
try {
return companyService.find(Long.valueOf(id));
} catch (BusinessException e) {
return null;
}
}
}
and here the controller that receives data form (via ajax request)
public #ResponseBody JsonResponseBean applay(#Valid VoucherForm form, BindingResult result, Locale locale) throws BusinessException {
....
}
where VoucherForm has these attributes
public class VoucherForm{
protected Long id;
protected Company company;
...
}
when i run the application and call controller method it returns type mismatch error for company attribute
and when i execute this on debug mode i see that it fails on serviceCompany - dao.find(id) statment where my dao is == null
Please help
finally i have to autowire the converter
Mvc-config
....
#Autowired
private GenericIdToCompanyConverter genericIdToCompanyConverter;
#Override
public void addFormatters(FormatterRegistry registry) {
registry.addConverter(genericIdToCompanyConverter);
}
and update the converter like follow :
public class GenericIdToCompanyConverter implements GenericConverter {
#Resource
#Qualifier("companyService")
private ICompanyService companyService;
#Override
public Set<ConvertiblePair> getConvertibleTypes() {
....
}
#Override
public Object convert(Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
....
}
}
UPDATE:
I have learned what I am looking to do is to use the Async within Retrofit with multiple queries too. I have updated my code, but I cannot get the async with the queries.
I am using Retrofit to make my data calls to a movie database and need to change the sort order depending on user settings. I am not clear how I could add this functionality to my interface.
sort_by=highest_rating.desc
or
sort_by=popularity.desc
Interface:
public interface MovieDatabaseApiCient {
#GET("/3/discover/movie")
void getData(#Query("api_key") String apiKey, #Query("sort_by") String sortByValue, Callback<MovieDbModel> response);
}
UPDATED API INTERFACE:
public interface MovieDatabaseApiCient {
#GET("/3/discover/movie?sort_by=popularity.desc&api_key=xxxxxxx")
void getMoviesByPopularityDesc(Callback<MovieDbModel> response);
#GET("/3/discover/movie?sort_by=vote_average_desc&api_key=xxxxxxxx")
void getMoviesByVotingDesc(Callback<MovieDbModel> response);
}
UPDATED DATA CALL THAT WORKS:
private void makeDataCall(String sortPreference) {
final RestAdapter restadapter = new RestAdapter.Builder().setEndpoint(ENDPOINT_URL).build();
MovieDatabaseApiCient apiLocation = restadapter.create(MovieDatabaseApiCient.class);
if (sortPreference.equals(this.getString(R.string.sort_order_popularity)) ){
apiLocation.getMoviesByPopularityDesc (new Callback<MovieDbModel>() {
#Override
public void success(MovieDbModel movieModels, Response response) {
movieDbResultsList = movieModels.getResults();
MoviesGridViewAdapter adapter = new MoviesGridViewAdapter(getApplicationContext(), R.layout.movie_gridview_item, movieDbResultsList);
gridView.setAdapter(adapter);
}
#Override
public void failure(RetrofitError error) {
Log.d("ERROR", error.toString());
Toast.makeText(getApplicationContext(), "Error: " + error.toString(), Toast.LENGTH_SHORT).show();
}
});
} else {
apiLocation.getMoviesByVotingDesc( new Callback<MovieDbModel>() {
#Override
public void success(MovieDbModel movieModels, Response response) {
movieDbResultsList = movieModels.getResults();
MoviesGridViewAdapter adapter = new MoviesGridViewAdapter(getApplicationContext(), R.layout.movie_gridview_item, movieDbResultsList);
gridView.setAdapter(adapter);
}
#Override
public void failure(RetrofitError error) {
Log.d("ERROR", error.toString());
Toast.makeText(getApplicationContext(), "Error: " + error.toString(), Toast.LENGTH_SHORT).show();
}
});
}
}
My call for the data:
private void makeDataCall (String apiKey, String sortPreference) {
final RestAdapter restadapter = new RestAdapter.Builder().setEndpoint(ENDPOINT_URL).build();
MovieDatabaseApiCient apiLocation = restadapter.create(MovieDatabaseApiCient.class);
apiLocation.getData(apiKey, sortPreference, new Callback<MovieDbModel>){
#Override
public void success(MovieDbModel movieModels, Response response) {
movieDbResultsList = movieModels.getResults();
MoviesGridViewAdapter adapter = new MoviesGridViewAdapter(getApplicationContext(), R.layout.movie_gridview_item, movieDbResultsList);
gridView.setAdapter(adapter);
}
#Override
public void failure(RetrofitError error) {
Log.d("ERROR", error.toString());
Toast.makeText(getApplicationContext(), "Error: " + error.toString(), Toast.LENGTH_SHORT).show();
}
});
}
I found a way to do Synchronously, but not asynchronously.
From your question and comment, IHMO, you should import retrofit.Callback; instead of import com.squareup.okhttp.Callback;
My code as the following has no compile error:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// creating a RestAdapter using the custom client
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint(API_URL_BASE)
.setLogLevel(RestAdapter.LogLevel.FULL)
.setClient(new OkClient(mOkHttpClient))
.build();
WebService webService = restAdapter.create(WebService.class);
retrofit.Callback<GetRoleData> callback = new Callback<GetRoleData>() {
#Override
public void success(GetRoleData getRoleData, retrofit.client.Response response) {
}
#Override
public void failure(RetrofitError error) {
}
};
webService.getData("api_key", "sort_by", callback);
}
Interface:
public interface WebService {
#GET("/3/discover/movie")
void getData(#Query("api_key") String apiKey, #Query("sort_by") String sortByValue, Callback<GetRoleData> response);
}
So, please check your code again