spring mvc - Using Jaxb2Marshaller with multiple classes having same @XmlRootElement name -

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i working on web service using spring-mvc , jaxb2marshaller.

i have 2 classes, both annotated same @xmlrootelement name 

@xmlrootelement(name="request") class foo extends astractrequest {  }  @xmlrootelement(name="request") class bar extends abstractrequest {  }

all 3 classes (abstractrequest, foo, bar) included in classestobebound list in same order

now request uses bar works fine. 1 uses foo throws classcastexception exception during unmarshalling message bar cannot cast foo

the controller code this, 

source source = new streamsource(new stringreader(body)); foo request = (foo) this.jaxb2marshaller.unmarshal(source);

i guess happening because bar kind of overriding foo since it's written after foo in list of classes bound in spring-servlet.xml file

however having multiple classes annotated @xmlrootelement(name="response") , marshalling response doesn't give problem.

is there way specify class used jaxb2marshaller unmarshalling ?

you can pass class jaxb2marshaller before unmarshal:

source source = new streamsource(new stringreader(body)); jaxb2marshaller.setmappedclass(foo.class);  foo request = (foo) jaxb2marshaller.unmarshal(source);

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