Jackson空XML数组反序列化

我从Recurly服务收到一个带有事务列表的xml。有时它是空的，看起来像这样：

I have an incoming xml from Recurly service with list of transactions. Sometimes it's empty and looks like this:

<transactions type="array">
</transactions>

我需要使用Jackson进行反序列化。我尝试了下一个映射

I need to deserialize this using Jackson. I've tried next mapping

@XmlRootElement(name = "transactions")
public class TransactionObjectListResponse extends ArrayList<TransactionObjectResponse> { 
}

其中每个事务的TransactionObjectResponse类。它适用于非空集合，但在没有交易发生时会失败。出现下一条消息：

where TransactionObjectResponse class for each transaction. It works fine for non-empty collections, but fails when no transactions came. Next message appears:

java.lang.IllegalStateException: Missing name, in state: END_ARRAY
at com.fasterxml.jackson.dataformat.xml.deser.FromXmlParser.getCurrentName(FromXmlParser.java:310)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:289)
at com.fasterxml.jackson.databind.deser.BeanDeserializer._deserializeOther(BeanDeserializer.java:157)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:123)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:230)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:207)
at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:23)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2888)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2034)

我直接使用了XmlMapper，

I used XmlMapper directly,

xmlMapper.readValue(responseXml, TransactionObjectListResponse.class);

响应实体的结构并不严格，可以提供任何帮助。谢谢。

Response entity structure isn't strict, any help would be appricated. Thanks.