Exception on deserializing empty element with an xsi attribute.

[chikim79]

Jackson XML fails with following exception when trying to deserialize an empty element with xsi attribute.

<a xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
       <b/>  <!-- works fine -->
       <c xsi:nil="false">0920</c> <!-- works fine -->
       <d xsi:nil="true"/> <!-- throws exception -->
</a>

public class A {
    String b;
    String c;
    String d;
    ...
}

com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String out of START_OBJECT token
 at [Source: java.io.StringReader@7862f584; line: 4, column: 8] (through reference chain: A["d"])
    at com.fasterxml.jackson.databind.JsonMappingException.from(JsonMappingException.java:148)
    at com.fasterxml.jackson.databind.DeserializationContext.mappingException(DeserializationContext.java:854)
    at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:62)
    at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:11)
    at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:520)
    at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:95)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:256)
    at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:125)
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3731)
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2724)

I tried looking at the code, but couldn't see a straight forward way to fix the issue.

[Typografikon]

I have the same problem, any idea to deal with it?

[chikim79]

I regretably ended up using a different xml parser. Still I would love for Jackson to fix this.

[cowtowncoder]

Looking into this now. Can't fix in 2.6, but might be able to fix in 2.7.

[cowtowncoder]

And yes, figured out a way to get it fixed.