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https://issues.apache.org/jira/browse/CXF-4502?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456740#comment-13456740
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Freeman Fang commented on CXF-4502:
-----------------------------------
Hi,
Jaxb only support List as collections, so use List instead.
Or you can use XmlAdapter to adapter the data type during marshal/unmarshal,
take a look at java_first_jaxws example shipped with kit, where we demonstrate
how to use XmlAdapter.
Freeman
> An Exception cannot be marshalled if contains a field of type java.util.Set
> ----------------------------------------------------------------------------
>
> Key: CXF-4502
> URL: https://issues.apache.org/jira/browse/CXF-4502
> Project: CXF
> Issue Type: Bug
> Components: JAX-WS Runtime, JAXB Databinding
> Affects Versions: 2.6.1
> Reporter: Peter Szanto
> Priority: Critical
>
> If I have an Exception that has a java.util.Set field like this :
> {code}
> public class MissingReferenceException extends Exception {
>
> private Set<Integer> references;
>
> private static final long serialVersionUID = -5294298476513084387L;
> public MissingReferenceException() {
> }
>
> public MissingReferenceException(Set<Integer> references) {
> this.setReferences(references);
> }
> public Set<Integer> getReferences() {
> return references;
> }
> public void setReferences(Set<Integer> references) {
> this.references = references;
> }
> }
> {code}
> then when I throw it I get the below exception :
> Caused by: java.lang.IllegalArgumentException: Argument is not an array
> at java.lang.reflect.Array.getLength(Native Method)
> at
> org.apache.cxf.jaxb.JAXBEncoderDecoder.writeArrayObject(JAXBEncoderDecoder.java:423)
> at
> org.apache.cxf.jaxb.JAXBEncoderDecoder.marshallException(JAXBEncoderDecoder.java:389)
> Looking at the source of JAXBEncoderDecoder.writeArrayObject() it is quite
> obvious that List is explicitly handled, but instead it should be Collection
> handled to cover all other suclasses like Set, Vector etc...
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