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Samebug tips

  1. ,
    Expert tip

    Try indicating constructor to use @JsonCreator annotation.

  2. ,

    You are trying to deserialize a type for which Jackson does not provide a default mapper. You should create your custom mapper for this type.

Solutions on the web

via Stack Overflow by Flaviu Cicio
, 1 year ago
Unexpected token (START_OBJECT), expected START_ARRAY: expected String, Number or JSON Array at [Source: {"id":null,"userId":1,"products":[],"date":{"dayOfMonth":13,"dayOfWeek":"WEDNESDAY","dayOfYear":195,"month":"JULY","monthValue":7,"year":2016
via GitHub by b-behan
, 7 months ago
No _valueDeserializer assigned at [Source: {"parent":{"name":"Alice","children":[{"name":"Bill"}]},"name":"Bill"}; line: 1, column: 47] (through reference chain: JsonTest$Child["parent"]->JsonTest$Parent["children"]->java.util.ArrayList[0]->JsonTest$Child["name"])
via GitHub by theturtle32
, 1 year ago
Can not deserialize instance of java.lang.String out of START_OBJECT token at [Source: org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$UnCloseableInputStream@4923d986; line: 1, column: 2] (through reference chain: io.confluent.kafka.schemaregistry.client.rest.entities.requests.RegisterSchemaRequest["schema"])
via GitHub by laurentgo
, 1 year ago
Could not find creator property with name 'stringField' (in class org.apache.drill.TestJackson$SimplePojo) at [Source: { "intField": 1, "stringField": "foo" }; line: 1, column: 1]
via GitHub by io7m
, 1 year ago
":[2017,1,12],"phones":[{"number":"555-55555"},{"number":"42-424242"}],"name":"John"}; line: 1, column: 43] (through reference chain: sample.immutables_javaslang_bug_20170112.PersonImpl$Json["phones"])
via GitHub by io7m
, 10 months ago
":[2017,1,12],"phones":[{"number":"555-55555"},{"number":"42-424242"}],"name":"John"}; line: 1, column: 43] (through reference chain: sample.immutables_javaslang_bug_20170112.PersonImpl$Json["phones"])
com.fasterxml.jackson.databind.JsonMappingException: Unexpected token (START_OBJECT), expected START_ARRAY: expected String, Number or JSON Array
 at [Source: {"id":null,"userId":1,"products":[],"date":{"dayOfMonth":13,"dayOfWeek":"WEDNESDAY","dayOfYear":195,"month":"JULY","monthValue":7,"year":2016,"hour":9,"minute":40,"nano":199000000,"second":27,"chronology":{"id":"ISO","calendarType":"iso8601"}}}; line: 1, column: 44] (through reference chain: com.shopcommon.model.Order["date"])	at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:261)	at com.fasterxml.jackson.databind.DeserializationContext.wrongTokenException(DeserializationContext.java:1340)	at com.fasterxml.jackson.datatype.joda.deser.LocalDateDeserializer.deserialize(LocalDateDeserializer.java:65)	at com.fasterxml.jackson.datatype.joda.deser.LocalDateDeserializer.deserialize(LocalDateDeserializer.java:15)	at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:490)	at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:95)	at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:276)	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:140)	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3789)	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2871)	at org.springframework.amqp.support.converter.Jackson2JsonMessageConverter.convertBytesToObject(Jackson2JsonMessageConverter.java:122)	at org.springframework.amqp.support.converter.Jackson2JsonMessageConverter.fromMessage(Jackson2JsonMessageConverter.java:92)	at org.springframework.amqp.rabbit.core.RabbitTemplate.receiveAndConvert(RabbitTemplate.java:819)	at com.orderservice.controller.OrderController.createOrder(OrderController.java:62)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:832)	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:743)	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:961)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:281)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:115)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:103)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:670)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)	at java.lang.Thread.run(Thread.java:745)