Cannot unmarshal an XML document to a JavaBean without its XML Schema?

Hi,
2 questions:
1. I have an XML document and have the corresponding JavaBean (the 2 already exist). I tried to unmarshall the XML document using JAXB but I get a strange error of duplicate attributes/elements no matter if I use the annotations @XmlElement, @XmlAttribute etc. The code I use is simply:
JAXBContext jc = JAXBContext.newInstance("MyClass.class");
Unmarshaller u = jc.createUnmarshaller();
MyClass myClass = (MyClass) u.unmarshal(new File("myxml.xml"));Do I always have to create the .xsd file of my xml, create the JavaBean using xjc and then run the above?
2. Can I use JAXB to parse an XML file to a JavaBean but, because the xml file is a complicated one, to use xpaths to get the attributes?
E.g. to use something like this?
@XmlAttribute ("xpath/to/attribute")Thank you in advance for your replies.
Best regards,
John.

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http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/statviews_4491.htm#REFRN26307

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I am using jboss for deploying the webservice. when i am deploying the webservice i am getting following error.
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<?xml version="1.0" encoding="UTF-8"?>
<java-wsdl-mapping version="1.1" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://www.ibm.com/webservices/xsd/j2ee_jaxrpc_mapping_1_1.xsd">
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<package-type>com.ca.ac.webservice.wrapper</package-type>
<namespaceURI>http://com.ca.warpper</namespaceURI>
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<package-mapping>
<package-type>com.ca.ac.webservice.wrapper</package-type>
<namespaceURI>http://com.ca.warpper</namespaceURI>
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<java-xml-type-mapping>
<java-type>com.ca.ac.webservice.wrapper.AddressWrapperIntf_test_RequestStruct</java-type>
<root-type-qname xmlns:typeNS="http://com.ca.warpper">typeNS:test</root-type-qname>
<qname-scope>complexType</qname-scope>
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<java-xml-type-mapping>
<java-type>com.ca.ac.webservice.wrapper.AddressWrapperIntf_test_ResponseStruct</java-type>
<root-type-qname xmlns:typeNS="http://com.ca.warpper">typeNS:testResponse</root-type-qname>
<qname-scope>complexType</qname-scope>
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<service-interface-mapping>
<service-interface>com.ca.ac.webservice.wrapper.AddressWrapper</service-interface>
<wsdl-service-name xmlns:serviceNS="http://com.ca.warpper">serviceNS:AddressWrapper</wsdl-service-name>
<port-mapping>
<port-name>AddressWrapperIntfPort</port-name>
<java-port-name>AddressWrapperIntfPort</java-port-name>
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</service-interface-mapping>
<service-endpoint-interface-mapping>
<service-endpoint-interface>com.ca.ac.webservice.wrapper.AddressWrapperIntf</service-endpoint-interface>
<wsdl-port-type xmlns:portTypeNS="http://com.ca.warpper">portTypeNS:AddressWrapperIntf</wsdl-port-type>
<wsdl-binding xmlns:bindingNS="http://com.ca.warpper">bindingNS:AddressWrapperIntfBinding</wsdl-binding>
<service-endpoint-method-mapping>
<java-method-name>test</java-method-name>
<wsdl-operation>test</wsdl-operation>
<wrapped-element/>
</service-endpoint-method-mapping>
</service-endpoint-interface-mapping>
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<?xml version="1.0" encoding="UTF-8"?>
<definitions name="AddressWrapper" targetNamespace="http://com.ca.warpper" xmlns:tns="http://com.ca.warpper" xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/">
<types>
<schema targetNamespace="http://com.ca.warpper" xmlns:tns="http://com.ca.warpper" xmlns:soap11-enc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns="http://www.w3.org/2001/XMLSchema">
<complexType name="test">
<sequence/></complexType>
<complexType name="testResponse">
<sequence/></complexType>
<element name="test" type="tns:test"/>
<element name="testResponse" type="tns:testResponse"/></schema></types>
<message name="AddressWrapperIntf_test">
<part name="parameters" element="tns:test"/></message>
<message name="AddressWrapperIntf_testResponse">
<part name="result" element="tns:testResponse"/></message>
<portType name="AddressWrapperIntf">
<operation name="test">
<input message="tns:AddressWrapperIntf_test"/>
<output message="tns:AddressWrapperIntf_testResponse"/></operation></portType>
<binding name="AddressWrapperIntfBinding" type="tns:AddressWrapperIntf">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document"/>
<operation name="test">
<soap:operation soapAction=""/>
<input>
<soap:body use="literal"/></input>
<output>
<soap:body use="literal"/></output></operation></binding>
<service name="AddressWrapper">
<port name="AddressWrapperIntfPort" binding="tns:AddressWrapperIntfBinding">
<soap:address location="REPLACE_WITH_ACTUAL_URL"/></port></service></definitions>
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<webservices
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:impl="http://com.myapp/ws4ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://www.ibm.com/webservices/xsd/j2ee_web_services_1_1.xsd"
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<webservice-description>
<webservice-description-name>AddressWrapper</webservice-description-name>
<wsdl-file>WEB-INF/wsdl/AddressWrapper.wsdl</wsdl-file>
<jaxrpc-mapping-file>WEB-INF/AddressWrapper-mapping.xml</jaxrpc-mapping-file>
<port-component>
<port-component-name>AddressWrapper</port-component-name>
<wsdl-port>AddressWrapperIntfPort</wsdl-port>
<service-endpoint-interface>com.ca.ac.webservice.wrapper.AddressWrapper</service-endpoint-interface>
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<servlet-link>AddressWrapperServlet</servlet-link>
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