The adapter converts between String[] and List<String> but the element to
which the adapter is attached to is a Map<?,?>.
You could attach an adapter to MyBean, to convert between its field
valueMapList and whatever. You'll have to design a class that's capable of
storing the same information as MyBean but can be handled by JAXB and is
structured according to the XML structure you want.
-W
On Thu, Aug 6, 2009 at 9:16 PM, swtking <rajkal23_at_yahoo.com> wrote:
>
> Could anyone tell me what I am doing wrong.
>
> Trying to marshall a complex map (Map<String,List<String>>)
>
> MyBean.java
>
> private Map<String,List<String>> valueMapList=null;
>
> @XmlJavaTypeAdapter(MyHashMapAdapter.class)
> @XmlElement
> public Map<String, List<String>> getValueMapList() {
> return valueMapList;
> }
>
> public void setValueMapList(Map<String, List<String>> valueMapList)
> {
> this.valueMapList = valueMapList;
> }
>
>
> MyHashMapAdapter.java
>
> public class MyHashMapAdapter extends XmlAdapter<String[], List<String>> {
>
> public List<String> unmarshal( String[] value ) {
> List<String> r = new ArrayList<String>();
> for( String s : value )
> r.add(s);
> return r;
> }
>
> public String[] unmarshal( List<String> value ) {
> return value.toArray(new String[value.size()]);
> }
>
> @Override
> public String[] marshal(List<String> arg0) throws Exception {
> String[] s = (String[]) arg0.toArray();
> return s;
> }
>
> }
>
>
> This is my error
>
> java.io.IOException: Error marshalling JAXB object of type "class
> com.MyBean".
> at
>
> com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.writeTo(AbstractRootElementProvider.java:145)
> at
>
> com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:254)
> at
>
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:578)
> at
>
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:502)
> at
>
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:493)
> Truncated. see log file for complete stacktrace
> com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 3 counts of
> IllegalAnnotationExceptions
> Adapter com.MyHashMapAdapter is not applicable to the field type
> java.util.Map<java.lang.String, java.util.List<java.lang.String>>.
> this problem is related to the following location:
> at
> @javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter(type=class
> javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter$DEFAULT, value=class
> com.MyHashMapAdapter)
> at public java.util.Map com.MyBean.getValueMapList()
> at com.MyBean
> java.util.Map is an interface, and JAXB can't handle interfaces.
> this problem is related to the following location:
> at java.util.Map
> at public java.util.Map com.MyBean.getValueMapList()
> at com.MyBean
> java.util.Map does not have a no-arg default constructor.
> this problem is related to the following location:
> at java.util.Map
> at public java.util.Map com.MyBean.getValueMapList()
> at com.MyBean
>
> at
>
> com.sun.xml.bind.v2.runtime.IllegalAnnotationsException$Builder.check(IllegalAnnotationsException.java:102)
> at
>
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:447)
> at
>
> com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:288)
> at
>
> com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1111)
> at
> com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:154)
> Truncated. see log file for complete stacktrace
>
>
> --
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