4

我正在使用 jaxb moxy 从活页夹中解组 xml，但它给出了异常：在项目中找不到具有默认根元素 bean 的描述符。我还使用 package-info.java 来指定命名空间。

要解组的 XML 文件-

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.example.org/package">
</beans>

Beans.java-

@XmlRootElement(namespace="http://www.example.org/package")
public class Beans {

String name = "ss";

@XmlElement
public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

}

包信息.java

@XmlSchema(
    namespace="http://www.example.org/package",
    elementFormDefault=XmlNsForm.QUALIFIED)
package com.jaxb.test;


import javax.xml.bind.annotation.*;

主班——

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        File xml = new File(
                "D:\\eclipse-jee-indigo-SR2\beans.xml");
        Document document = db.parse(xml);

        JAXBContext jc = JAXBContext.newInstance(Beans.class);



        Binder<Node> binder = jc.createBinder();

        Beans customer = (Beans)   jc.createBinder().unmarshal(document);//throws exception

     //Beans customer = (Beans) jc.createUnmarshaller().unmarshal(xml);This works
    //Beans customer = (Beans) jc.createUnmarshaller().unmarshal(document);Throws same exception

例外-

javax.xml.bind.UnmarshalException
- with linked exception:
[Exception [EclipseLink-25008] (Eclipse Persistence Services - 2.4.1.v20121003-   ad44345): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor with default root element beans was not found in the project]
at  org.eclipse.persistence.jaxb.JAXBUnmarshaller.handleXMLMarshalException(JAXBUnmarshaller.java:1014)
at  org.eclipse.persistence.jaxb.JAXBUnmarshaller.unmarshal(JAXBUnmarshaller.java:199)
at com.jaxb.test.JaxbTest.main(JaxbTest.java:43)
4

2 回答 2

1

默认情况下 aDocumentBuilderFactory不支持命名空间。这意味着您传递给 MOXy 的文档不会像预期的那样被命名空间限定。您可以通过在代码中添加以下内容来解决此问题：

dbf.setNamespaceAware(true);
于 2013-03-20T12:07:26.913 回答
1

解决了。​​我没有使用 package-info.java，而是使用了 bindins.xml 。

bean-bindings.xml-

<?xml version="1.0" encoding="UTF-8"?>
<xml-schema element-form-default="QUALIFIED" namespace="http://www.example.org/package">
    <xml-ns prefix="" namespace-uri="http://www.example.org/package" />
</xml-schema>

<java-types>
    <java-type name="Beans">
    <xml-root-element name="beans"/>
        <java-attributes>

        </java-attributes>
    </java-type>
</java-types>

于 2013-03-20T12:09:06.917 回答