com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of org.hello.tweetconsumer.Greeting out of START_ARRAY token at [Source: buffer(com.android.okhttp.internal.http.HttpConnection$ChunkedSource@a143f53).inputStream(); line: 1, column: 1]

Stack Overflow | Didem | 4 months ago
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    Consuming restful services on Android application

    Stack Overflow | 4 months ago | Didem
    com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of org.hello.tweetconsumer.Greeting out of START_ARRAY token at [Source: buffer(com.android.okhttp.internal.http.HttpConnection$ChunkedSource@a143f53).inputStream(); line: 1, column: 1]
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    Can not deserialize instance of my package out of START_ARRAY token

    Stack Overflow | 6 months ago | lakshman kumar
    com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of stpi.com.rest.Products out of START_ARRAY token at [Source: com.android.okhttp.internal.http.HttpTransport$ChunkedInputStream@41da0398; line: 1, column: 1]
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    Could not read JSON: Can not deserialize instance of org.springframework.xd.rest.domain.JobExecutionInfoResource[] out of START_OBJECT token

    Stack Overflow | 5 months ago | black jack
    com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of org.springframework.xd.rest.domain.JobExecutionInfoResource[] out of START_OBJECT token at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@4478de9f; line: 1, column: 1]
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    Reading an object of inner class throws MarkLogicIOException

    GitHub | 2 years ago | sravanr
    com.marklogic.client.MarkLogicIOException: com.fasterxml.jackson.databind.JsonMappingException: No suitable constructor found for type [simple type, class com.marklogic.javaclient.TestPOJOsample1$Student]: can not instantiate from JSON object (need to add/enable type information?) at [Source: java.io.InputStreamReader@37e4320e; line: 1, column: 54]
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    How to read subtype?

    GitHub | 2 years ago | gaydenko
    com.fasterxml.jackson.databind.JsonMappingException: Can not instantiate abstract type [simple type, class scala.runtime.Nothing$] (need to add/enable type information?) at [Source: {"i":42}; line: 1, column: 2]

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Root Cause Analysis

  1. com.fasterxml.jackson.databind.JsonMappingException

    Can not deserialize instance of org.hello.tweetconsumer.Greeting out of START_ARRAY token at [Source: buffer(com.android.okhttp.internal.http.HttpConnection$ChunkedSource@a143f53).inputStream(); line: 1, column: 1]

    at com.fasterxml.jackson.databind.DeserializationContext.mappingException()
  2. Jackson
    ObjectMapper.readValue
    1. com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:691)
    2. com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:685)
    3. com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromArray(BeanDeserializerBase.java:1215)
    4. com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:151)
    5. com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:126)
    6. com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2993)
    7. com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2158)
    7 frames
  3. Spring
    RestTemplate.getForObject
    1. org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.readInternal(MappingJackson2HttpMessageConverter.java:123)
    2. org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:147)
    3. org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:76)
    4. org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:484)
    5. org.springframework.web.client.RestTemplate.execute(RestTemplate.java:439)
    6. org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:237)
    6 frames
  4. org.hello.tweetconsumer
    MainActivity$HttpRequestTask.doInBackground
    1. org.hello.tweetconsumer.MainActivity$HttpRequestTask.doInBackground(MainActivity.java:90)
    2. org.hello.tweetconsumer.MainActivity$HttpRequestTask.doInBackground(MainActivity.java:82)
    2 frames
  5. Android Platform
    AsyncTask$2.call
    1. android.os.AsyncTask$2.call(AsyncTask.java:295)
    1 frame
  6. Java RT
    FutureTask.run
    1. java.util.concurrent.FutureTask.run(FutureTask.java:237)
    1 frame
  7. Android Platform
    AsyncTask$SerialExecutor$1.run
    1. android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
    1 frame
  8. Java RT
    Thread.run
    1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    3. java.lang.Thread.run(Thread.java:818)
    3 frames