java – 使用EclipseLink MOXy解组时忽略DTD

当尝试使用EclipseLink MOXy将一些XML解组为POJO时,我得到一个FileNotFoundException,它正在寻找文档的DTD作为相对路径.

Exception in thread "main" org.springframework.oxm.UnmarshallingFailureException: JAXB unmarshalling exception; nested exception is javax.xml.bind.UnmarshalException
 - with linked exception:
[java.io.FileNotFoundException: C:\Users\deejay\Documents\workspace-sts-3.0.0.RELEASE\moxy-test\ieee_idams_exchange.dtd (The system cannot find the file specified)]
    at org.springframework.oxm.jaxb.Jaxb2Marshaller.convertJaxbException(Jaxb2Marshaller.java:761)
    at org.springframework.oxm.jaxb.Jaxb2Marshaller.unmarshal(Jaxb2Marshaller.java:682)
    at org.springframework.oxm.jaxb.Jaxb2Marshaller.unmarshal(Jaxb2Marshaller.java:665)
    at com.mendeley.services.utility.EclipseLinkMarshaller.load(EclipseLinkMarshaller.java:29)
    at com.mendeley.MoxyTest.main(MoxyTest.java:31)

我按照this example提供“外部元数据”,所以我不知道为什么它甚至需要DTD.如果我能让它忽略DTD,或者不尝试解决它,那就太好了.

最佳答案
您可以从已禁用DTD支持的XMLStreamReader中解组:

import javax.xml.bind.*;
import javax.xml.stream.*;
import javax.xml.transform.stream.StreamSource;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Customer.class);

        XMLInputFactory xif = XMLInputFactory.newFactory();
        xif.setProperty(XMLInputFactory.SUPPORT_DTD, false);
        XMLStreamReader xsr = xif.createXMLStreamReader(new StreamSource("input.xml"));

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Customer customer = (Customer) unmarshaller.unmarshal(xsr);
    }

}

额外

如果要编写DTD声明,可以执行以下操作:

    XMLOutputFactory xof = XMLOutputFactory.newFactory();
    XMLStreamWriter xsw = xof.createXMLStreamWriter(System.out);
    xsw.writeDTD("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");

    Marshaller marshaller = jc.createMarshaller();
    marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
    marshaller.marshal(html, xsw);
    xsw.close();

转载注明原文:java – 使用EclipseLink MOXy解组时忽略DTD - 代码日志