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JaxbRepresentation给出错误“不包含ObjectFactory.class或jaxb.in​​dex”

方德宇
2023-03-14
问题内容：

我正在尝试创建一个将对象转换为JaxbRepresentation的示例测试应用程序。但是当我尝试运行此命令时，它给了我一个错误。

Main.java文件

package test_jaxb;

import org.restlet.Server;
import org.restlet.data.Protocol;

public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
      Server helloServer = new Server(Protocol.HTTP, 8111,
      TestResource.class);
      helloServer.start();
    }

}

TestResource.java文件

package test_jaxb;

import org.restlet.ext.jaxb.JaxbRepresentation;
import org.restlet.representation.Representation;
import org.restlet.resource.ResourceException;
import org.restlet.resource.ServerResource;

public class TestResource extends ServerResource{

   @Override
   protected Representation get() throws ResourceException {
      SampleResponse res = new SampleResponse();
      res.setMsg("Success");
      res.setStatusCode(0);
      JaxbRepresentation<SampleResponse> representation = new JaxbRepresentation<SampleResponse>(res);
      return representation;
   }
}

SampleResponse.java文件

package test_jaxb;

import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="Response")
public class SampleResponse {
   private int statusCode;
   private String msg;

   @XmlElement(name="Msg")
   public String getMsg() {
      return msg;
   }

   public void setMsg(String msg) {
      this.msg = msg;
   }

   @XmlElement(name="StatusCode")
   public int getStatusCode() {
      return statusCode;
   }

   public void setStatusCode(int statusCode) {
      this.statusCode = statusCode;
   }
}

当我在服务器上运行它时，它引发以下错误：

WARNING: Problem creating Marshaller
javax.xml.bind.JAXBException: "test_jaxb" doesnt contain ObjectFactory.class or jaxb.index
    at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:119)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:132)
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:299)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at org.restlet.ext.jaxb.JaxbRepresentation.getContext(JaxbRepresentation.java:83)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:68)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:64)
    at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:141)
    at java.lang.ThreadLocal.get(ThreadLocal.java:131)
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:163)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:527)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller getMarshaller
WARNING: Unable to locate marshaller.
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.JaxbRepresentation write
WARNING: JAXB marshalling error caught.
javax.xml.bind.JAXBException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:166)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:527)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller$1 initialValue
WARNING: Problem creating Marshaller
javax.xml.bind.JAXBException: "failure" doesnt contain ObjectFactory.class or jaxb.index
    at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:119)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:132)
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:299)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:372)
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:337)
    at org.restlet.ext.jaxb.JaxbRepresentation.getContext(JaxbRepresentation.java:83)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:68)
    at org.restlet.ext.jaxb.internal.Marshaller$1.initialValue(Marshaller.java:64)
    at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:141)
    at java.lang.ThreadLocal.get(ThreadLocal.java:131)
    at org.restlet.ext.jaxb.internal.Marshaller.getMarshaller(Marshaller.java:163)
    at org.restlet.ext.jaxb.internal.Marshaller.marshal(Marshaller.java:216)
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:535)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.ext.jaxb.internal.Marshaller getMarshaller
WARNING: Unable to locate marshaller.
May 16, 2011 7:05:12 AM org.restlet.engine.http.connector.Connection writeMessage
WARNING: Exception while writing the message body.
java.io.IOException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:539)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)
May 16, 2011 7:05:12 AM org.restlet.engine.http.connector.ServerConnection writeMessage
INFO: An exception occured while writing the response
java.io.IOException: Unable to locate marshaller.
    at org.restlet.ext.jaxb.JaxbRepresentation.write(JaxbRepresentation.java:539)
    at org.restlet.representation.WriterRepresentation.write(WriterRepresentation.java:104)
    at org.restlet.engine.http.connector.Connection.writeMessageBody(Connection.java:873)
    at org.restlet.engine.http.connector.Connection.writeMessage(Connection.java:818)
    at org.restlet.engine.http.connector.ServerConnection.writeMessage(ServerConnection.java:334)
    at org.restlet.engine.http.connector.Connection.writeMessages(Connection.java:954)
    at org.restlet.engine.http.connector.BaseServerHelper.handleOutbound(BaseServerHelper.java:201)
    at org.restlet.engine.http.connector.BaseHelper.handleNextOutbound(BaseHelper.java:425)
    at org.restlet.engine.http.connector.BaseServerHelper.handleInbound(BaseServerHelper.java:174)
    at org.restlet.engine.http.connector.BaseHelper.handleNextInbound(BaseHelper.java:418)
    at org.restlet.engine.http.connector.Connection.readMessages(Connection.java:695)
    at org.restlet.engine.http.connector.Controller$2.run(Controller.java:95)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
    at java.lang.Thread.run(Thread.java:619)

请有人帮助！！！


问题答案：

为了摆脱其他jaxb.in​​dex文件，您可以使用Java类实例化上下文：

http://docs.oracle.com/javase/6/docs/api/javax/xml/bind/JAXBContext.html#newInstance（java.lang.Class
…）

通常，您只需要传递单个Java类，因为其他类“可以从这些类静态访问”，因此JAXB能够识别它们。



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