Wyjątek roztrzasłowy podczas korzystania z JaxB

Mam kod Java, a ja próbuję go zdemontować i zapisać plik XML na moim komputerze za pomocą JaxB, ale mam wyjątek od marszałkowania:

Exception in thread "main" javax.xml.bind.MarshalException

 - with linked exception:

[com.sun.istack.internal.SAXException2: unable to marshal type "java.lang.String" as an element because it is missing an @XmlRootElement annotation]

 at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:311)

 at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236)

 at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:103)

 at xml.ConfList.addToList(ConfList.java:29)

 at xml.Tester.work(Tester.java:34)

 at xml.Tester.main(Tester.java:16)

Caused by: com.sun.istack.internal.SAXException2: unable to marshal type "java.lang.String" as an element because it is missing an @XmlRootElement annotation

 at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.reportError(XMLSerializer.java:237)

 at com.sun.xml.internal.bind.v2.runtime.LeafBeanInfoImpl.serializeRoot(LeafBeanInfoImpl.java:126)

 at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:483)

 at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:308)

 ... 5 more

Java Result: 1

BUILD SUCCESSFUL (total time: 9 seconds)

Kod JaxB, którego używam:

import java.io.File;

import java.io.IOException;

import java.util.List;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

import javax.xml.bind.Marshaller;

import javax.xml.bind.Unmarshaller;

 public class ConfList { private static final String fileName = "Source.xml";

 List<String> xmlConfList;

 private Object object; public ConfList(Object object){

 this.object = object;

 } public void addToList() throws IOException, JAXBException { File file = new File(fileName);

 JAXBContext jaxbContext = JAXBContext.newInstance(XmlConf.class);

 Marshaller jaxbMarshaller = jaxbContext.createMarshaller(); jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); jaxbMarshaller.marshal(object, file);// i got the exception here

 jaxbMarshaller.marshal(object, System.out); }

 }

Klasa główna, której używam:

import java.io.IOException;

import java.util.ArrayList;

import javax.xml.bind.JAXBException;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.transform.TransformerException;

import javax.xml.xpath.XPathExpressionException;import org.xml.sax.SAXException;public class Tester{ public static void main (String [] args) throws XPathExpressionException, IOException, ParserConfigurationException, SAXException, TransformerException, JAXBException{ work(); } public static void work () throws IOException, ParserConfigurationException, SAXException, XPathExpressionException, TransformerException, JAXBException{

 String surl = "[url=http://api.worldweatheronline.com/free/v1/weather.ashx?q=Cairo&format=xml&num_of_days=1&key=wd63kxr294rcgvbynhaf2z4r";]http://api.worldweatheronline. ... 3B%3B[/url]

 XmlSource xml = new XmlSource(surl);

 xml.validate();

 xml.load();

 ArrayList<String> paths = xml.getAllPaths(); for(String path : paths){

 System.out.println(path);

 } ConfList v = new ConfList(xml.getXml());

 v.addToList(); }

}

XmlConf, klasa:

import java.net.URL;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import javax.xml.bind.annotation.XmlAttribute;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;@XmlRootElement(name = "XmlSource")

public class XmlConf { private URL url;

 private List<String> path = new ArrayList<String>();

 private String urlp;

 private Map<String, String> parameters;

 private String host;

 public URL getUrl() {

 return url;

 }

 @XmlAttribute(name = "URL")

 public void setUrl(URL url) {

 this.url = url;

 }

 @XmlElement

 public List<String> getPath() {

 return path;

 }

 public void setPath(String path) {

 this.path.add(path);

 }

 @XmlElement

 public void setUrlPath(String urlp){

 this.urlp = urlp;

 }

 public String getUrlPath(){

 return urlp;

 }

 public void setParameters(Map<String, String> parameters){

 this.parameters = parameters;

 }

 public Map<String, String> getParameters(){

 return parameters;

 }

 public void setHostName(String host){

 this.host = host;

 }

 public String getHostName(){

 return host;

 }

}

Należy pamiętać, że wszystkie metody (klasy XMLSource) są wykonywane prawidłowo.