Created
April 7, 2015 16:28
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Jackson JSON mapper fails on "has no property name annotation". Followed the example from here https://coderwall.com/p/o--apg/easy-json-un-marshalling-in-scala-with-jackson. Having Scala 2.10.4, Jackson libs 2.2.2
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| import com.fasterxml.jackson.databind.{DeserializationFeature, ObjectMapper} | |
| import com.fasterxml.jackson.module.scala.DefaultScalaModule | |
| import com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper | |
| val mapper = new ObjectMapper() with ScalaObjectMapper | |
| mapper.registerModule(DefaultScalaModule) | |
| mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false) | |
| case class Person(name: String, age: Int) | |
| case class Group(name: String, persons: Seq[Person], leader: Person) | |
| val jeroen = Person("Jeroen", 26) | |
| val martin = Person("Martin", 54) | |
| val originalGroup = Group("Scala ppl", Seq(jeroen,martin), martin) | |
| originalGroup | |
| val group = mapper.readValue[Group]("""{"name":"Scala ppl","persons":[{"name":"Jeroen","age":26},{"name":"Martin","age":54}],"leader":{"name":"Martin","age":54}}""") | |
| //com.fasterxml.jackson.databind.JsonMappingException: Argument #0 of constructor [constructor for A$A17$A$A17$Group, annotations: [null]] has no property name annotation; must have name when multiple-paramater constructor annotated as Creator | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:268) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:243) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:142) | |
| //at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:318) | |
| //at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:2986) | |
| //at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:2880) | |
| //at com.fasterxml.jackson.databind.ObjectMapper.readValue([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:2044) | |
| //at com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper$class.readValue([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:176) | |
| //at #worksheet#.$anon$1.readValue([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:7) | |
| //at #worksheet#.group$lzycompute([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:20) | |
| //at #worksheet#.group([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:20) | |
| //at #worksheet#.#worksheet#([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:20) | |
| //Caused by: java.lang.IllegalArgumentException: Argument #0 of constructor [constructor for A$A17$A$A17$Group, annotations: [null]] has no property name annotation; must have name when multiple-paramater constructor annotated as Creator | |
| //at com.fasterxml.jackson.databind.deser.BasicDeserializerFactory.findValueInstantiator(BasicDeserializerFactory.java:283) | |
| //at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:263) | |
| //at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:168) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:401) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:354) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:267) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:247) | |
| //at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:146) | |
| //at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:322) | |
| //at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:2990) | |
| //at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2884) | |
| //at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2048) | |
| //at com.fasterxml.jackson.module.scala.experimental.ScalaObjectMapper$class.readValue(ScalaObjectMapper.scala:180) | |
| //at A$A17$A$A17$$anon$1.readValue([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:11) | |
| //at A$A17$A$A17.group$lzycompute([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:24) | |
| //at A$A17$A$A17.group([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:24) | |
| //at A$A17$A$A17.get$$instance$$group([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:24) | |
| //at A$A17$.main([nw] segments-json-umnarshall-example.sc274342055815886954.tmp:63) | |
| //at A$A17.main([nw] segments-json-umnarshall-example.sc274342055815886954.tmp) | |
| //at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | |
| //at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) |
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