JAXB-当包装器元素为root时，如何使用XmlAdapter解组列表？

Question

Exists a way to unmarshall a list to a map when the wrapper element of the list is the root itself?

I have following xml structure which I cannot change:

<?xml version="1.0"?>
   <root>
     <article id="1">...</article>
     <article id="2">...</article>
    ...
  </root>

And I like to have the following Map Structure:

Map<Integer,Article> map 

I tried to use the XmlAdapter but the problem is the unmarshal method of the adapter. Here it likes to have an own wrapper element eg "articles" which I don't have. I found only working examples where the list had its own dedicated wrapper element.

I tried with "unmarshall(List articles)" but then it gets never called. And with "unmarshall(Object articles)" it will call th method for every article element

Any hints?

@XmlRootElement(name = "root")
@XmlAccessorType(XmlAccessType.FIELD)
public class DataSet {
   @XmlJavaTypeAdapter(MyAdapter.class)
   @XmlElement(name="article")
   private Map<Integer,Article> map;
}

public class MyAdapter extends XmlAdapter< ??? , Map<Integer,Article>  {

    @Override
    public Map<Integer, Article> unmarshal( ???  ) throws Exception {
     Map<Integer, Article> map = new HashMap<Integer, Article>();
     ...
     return map;
    }
    ...
}

Answer 1

答案是，当前不支持它，您需要自己动手做，这意味着在解组后您需要遍历对象列表并将其自己放置在地图上