FasterXML / FasterXML/jackson-module-scala

XML collection duplicated element names

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#242 コメント 7 件 リアクション 1 件 担当者 0 名 GitHub で見る
主要言語
Scala
スター
506
フォーク
138
平均マージ
3時間 6分
マージ済み PR(30日)
48

説明

I'm having trouble getting a case class with a collection field to serialize the way I want.
I have a data model that looks like this:

``` scala
@JsonRootName("document")
case class Document(header: Header)
case class Header(authors: Seq[Author])
case class Author(name: String)
```

And I'm using Jackson to produce an XML:

``` scala
val doc = Document(Header(Seq(Author("Dick Jones"), Author("Bob Morton"))))
val mapper = new XmlMapper()
mapper.registerModule(DefaultScalaModule)
val xml = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(doc)
```

The document that looks like this:

``` xml




Dick Jones


Bob Morton




```

But `` is duplicated with its nested elements. I want the `` tag to contain a list of `` elements.
I can get this output by adding the following annotations to the Header case class:

``` scala
case class Header(@JacksonXmlElementWrapper(localName = "authors") @JacksonXmlProperty(localName = "author") authors: Seq[Author])
```

This serializes the way I want, but when deserializing I get the following exception:

```
Exception in thread "main" com.fasterxml.jackson.databind.JsonMappingException: Could not find creator property with name 'authors' (in class sample.Header)
at [Source: java.io.StringReader@3d778e7; line: 1, column: 1]
at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:216)
at com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:894)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.addBeanProps(BeanDeserializerFactory.java:541)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.buildBeanDeserializer(BeanDeserializerFactory.java:228)
at com.fasterxml.jackson.databind.deser.BeanDeserializerFactory.createBeanDeserializer(BeanDeserializerFactory.java:143)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer2(DeserializerCache.java:406)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createDeserializer(DeserializerCache.java:352)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:264)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
at com.fasterxml.jackson.databind.DeserializationContext.findContextualValueDeserializer(DeserializationContext.java:444)
at com.fasterxml.jackson.databind.deser.std.StdDeserializer.findDeserializer(StdDeserializer.java:946)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.resolve(BeanDeserializerBase.java:446)
at com.fasterxml.jackson.databind.deser.std.DelegatingDeserializer.resolve(DelegatingDeserializer.java:61)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCache2(DeserializerCache.java:296)
at com.fasterxml.jackson.databind.deser.DeserializerCache._createAndCacheValueDeserializer(DeserializerCache.java:244)
at com.fasterxml.jackson.databind.deser.DeserializerCache.findValueDeserializer(DeserializerCache.java:142)
at com.fasterxml.jackson.databind.DeserializationContext.findRootValueDeserializer(DeserializationContext.java:477)
at com.fasterxml.jackson.databind.ObjectMapper._findRootDeserializer(ObjectMapper.java:3890)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3785)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2779)
at sample.Main$.main(Message.scala:26)
at sample.Main.main(Message.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
```

Is there something I can do to get this to deserialize properly?
Thanks for your help!

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