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POEclipseLink Throwing Exception?
 

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    <p>i'm working on a project based on jersey implementation of REST,and i i'm using JPA for persistence,spring IoC for DI.Now i have some objects that must be marshalled with JAXB (MOXy).Following step by step <a href="https://stackoverflow.com/questions/3941479/jaxb-how-to-marshall-map-into-keyvalue-key">this tuto</a> i tried to get things working but unfortunately i haven't succeeded yet.The folling are my classes,if you can help please:</p> <p>Root classe :</p> <pre class="lang-java prettyprint-override"><code>package com.persistent.entity; import java.util.HashMap; import java.util.Map; import javax.xml.bind.annotation.XmlAccessType; import javax.xml.bind.annotation.XmlAccessorType; import javax.xml.bind.annotation.XmlRootElement; import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter; @XmlAccessorType(XmlAccessType.NONE) @XmlRootElement public class Bar { private Map&lt;String,String&gt; mapbar; public Bar() { } public Bar(Map&lt;String,String&gt; map ){ this.mapbar = map; } @XmlJavaTypeAdapter(MapAdapter.class) public Map&lt;String, String&gt; getMapbar() { return mapbar; } public void setMapbar(Map&lt;String, String&gt; map) { this.mapbar = map; } } </code></pre> <p>MapAdapter class :</p> <pre class="lang-java prettyprint-override"><code>package com.persistent.entity; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; //import javax.xml.bind.JAXBContext; import javax.xml.bind.annotation.adapters.XmlAdapter; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class MapAdapter extends XmlAdapter&lt;AdaptedMap, Map&lt;String, String&gt;&gt; { @Override public AdaptedMap marshal(Map&lt;String, String&gt; map) throws Exception { DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder db = dbf.newDocumentBuilder(); Document document = db.newDocument(); Element rootElement = document.createElement("bar"); document.appendChild(rootElement); for(Entry&lt;String,String&gt; entry : map.entrySet()) { Element mapElement = document.createElement(entry.getKey()); mapElement.setNodeValue(entry.getValue()); rootElement.appendChild(mapElement); } AdaptedMap adaptedMap = new AdaptedMap(); adaptedMap.setValue(document); return adaptedMap; } @Override public Map&lt;String, String&gt; unmarshal(AdaptedMap adaptedMap) throws Exception { Map&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); Element rootElement = (Element) adaptedMap.getValue(); NodeList childNodes = rootElement.getChildNodes(); for(int x=0,size=childNodes.getLength(); x&lt;size; x++) { Node childNode = childNodes.item(x); if(childNode.getNodeType() == Node.ELEMENT_NODE) { map.put(childNode.getLocalName(), childNode.getTextContent()); } } return map; } } </code></pre> <p>AdaptedMap class :</p> <pre class="lang-java prettyprint-override"><code>package com.persistent.entity; import javax.xml.bind.annotation.XmlAnyElement; //import org.w3c.dom.Document; public class AdaptedMap { private Object value; @XmlAnyElement public Object getValue() { return value; } public void setValue(Object value) { this.value = value; } } </code></pre> <p>and, finally, the resource class :</p> <pre class="lang-java prettyprint-override"><code>package com.persistent.rest; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.ws.rs.DefaultValue; import javax.ws.rs.GET; import javax.ws.rs.Path; import javax.ws.rs.Produces; import javax.ws.rs.QueryParam; import javax.ws.rs.core.MediaType; import javax.ws.rs.core.Response; import javax.xml.bind.JAXBContext; import javax.xml.bind.Marshaller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Scope; import org.springframework.stereotype.Component; import com.persistent.entity.Bar; import com.persistent.entity.BarList; import com.persistent.entity.Pie; import com.persistent.entity.Vente; import com.persistent.entity.VentesList; import com.persistent.entity.PieList; import com.persistent.service.VenteService; import com.sun.jersey.api.json.JSONWithPadding; // The Java class will be hosted at the URI path "/myresource" @Path("/myresource") @Component @Scope("request") public class MyResource { @Autowired VenteService venteService; @GET @Produces("application/x-javascript") public JSONWithPadding getBarService(@QueryParam("callback") String callback){ int i; VentesList ventes = venteService.getAll(); Map&lt;String,String&gt; hmBar = new HashMap&lt;String,String&gt;(); for (i=0;i&lt;ventes.getsimpleVentes().size();i++){ hmBar.put(ventes.getsimpleVentes().get(i).getProjet(),String.valueOf( ventes.getsimpleVentes().get(i).getNbrRsrv())); } Bar ba = new Bar(hmBar); return new JSONWithPadding(ba,callback); } } </code></pre> <p>After running this on Tomcat i get this Exception :</p> <pre><code>GRAVE: "Servlet.service()" pour la servlet Jersey Spring Web Application a généré une exception java.io.IOException: Error marshalling JAXB object of type "class com.persistent.entity.Bar". 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) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:308) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:314) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:239) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Thread.java:619) Caused by: javax.xml.bind.MarshalException - with linked exception: [Exception [EclipseLink-25003] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.XMLMarshalException Exception Description: An error occurred marshalling the object Internal Exception: Exception [EclipseLink-3001] (Eclipse Persistence Services - 2.3.1.v20111018-r10243): org.eclipse.persistence.exceptions.ConversionException Exception Description: The object [{Dyar Al Baydae=6, TEST=8, test=5, Dyar Al Bahja=20, Dyar Al Mansour=87}], of class [class java.util.HashMap], could not be converted to [class com.persistent.entity.AdaptedMap].] at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:326) at com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.writeTo(AbstractRootElementProvider.java:167) at com.sun.jersey.core.provider.jaxb.AbstractRootElementProvider.writeTo(AbstractRootElementProvider.java:143) ... 19 more </code></pre>
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