我试图将对象列表编组为xml.
以下是方法:
import com.sun.xml.bind.marshaller.NamespacePrefixMapper;
import javax.xml.bind.Marshaller;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
public class ItemMarshaller
{
public String marshallItems(final List<Items> items)
{
try
{
final JAXBContext context = JAXBContext.newInstance("com.project.jaxb.items");
final Marshaller m = context.createMarshaller();
m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
m.setProperty("com.sun.xml.bind.namespacePrefixMapper", new NamespacePrefixMapper()
{
@Override
public String getPreferredPrefix(String uri, String suggestion, boolean requirePrefix)
{
return "";
}
});
final StringWriter writer = new StringWriter();
m.marshal(items, writer);
return writer.toString();
}
catch (final JAXBException e)
{
ErrorLogger.LOGGER.error("Marshalling failed.", e); //$NON-NLS-1$
}
return null;
}
}
当我调用m.setProperty(“com.sun.xml.bind.namespacePrefixMapper”,新的NamespacePrefixMapper()时,我收到以下错误:
javax.xml.bind.PropertyException: name: com.sun.xml.bind.namespacePrefixMapper value: com.project.ItemMarshaller$1@eb6e072
at javax.xml.bind.helpers.AbstractMarshallerImpl.setProperty(AbstractMarshallerImpl.java:358)
at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.setProperty(MarshallerImpl.java:527)
现在如果我使用Internal类:
com.sun.xml.internal.bind.marshaller.NamespacePrefixMapper;
相反,它的工作原理.但是,这个项目是使用maven构建的,当你依赖内部类时会抱怨它.使用内部类也是一个坏主意,或者我被告知.
我怎样才能解决这个问题?
最佳答案 选项1:
使用package-info.java文件中的注释而不是NamespacePrefixMapper类:
@javax.xml.bind.annotation.XmlSchema(
namespace = "http://www.example.com/schema/impl",
elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED,
xmlns={@XmlNs(prefix="ns0", namespaceURI="http://www.example.com/schema/impl")}
)
package com.abc.schema.impl;
选项2:
在maven中我添加了以下构建依赖项:
<!-- https://mvnrepository.com/artifact/com.sun.xml.bind/jaxb-impl -->
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.4-1</version>
</dependency>
这使您可以在您使用的任何Java版本上使用com.sun.xml.bind.marshaller.NamespacePrefixMapper.