如何使用JAXB为XML中的空元素生成结束标记 [英] How to generate end tag for empty element in XML using JAXB

问题描述

我正在使用JAXB生成XML。但是JAXB正在生成一个空标签。但我的客户想要单独的空标签。我知道两者都是平等但他不同意我的看法。请任何人建议解决方案。谢谢。

I'm generating XML using JAXB. But JAXB is generating an empty Tag closing it self. But my client want separate empty tag. I know both are equals but he is not agree with me. please any one suggest the solution. Thanks.

示例代码：

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "currencyCode",
    "discountValue",
    "setPrice",
    "spendLowerThreshold",
    "spendUpperThreshold",
    "discountApportionmentPercent",
    "discountApportionmentValue"
})
@XmlRootElement(name = "countryData")
public class CountryData {
    protected String currencyCode;
    protected String discountValue = "";
    protected String setPrice = "";
    protected String spendLowerThreshold = "";
    protected String spendUpperThreshold = "";
    protected String discountApportionmentPercent = "";
    protected String discountApportionmentValue = "";

    // Setters and Gettres
}

实际输出：

<currencyCode>GBP</currencyCode>
<discountValue/>
<setPrice/>
<spendLowerThreshold/>
<spendUpperThreshold/>
<discountApportionmentPercent>0.0</discountApportionmentPercent>
<discountApportionmentValue/>

预期产出：

<currencyCode>GBP</currencyCode>
<discountValue></discountValue>
<setPrice></setPrice>
<spendLowerThreshold></spendLowerThreshold>
<spendUpperThreshold></spendUpperThreshold>
<discountApportionmentPercent>0.0</discountApportionmentPercent>
<discountApportionmentValue></discountApportionmentValue>

编组编码：

try {
    Marshaller marshaller = JAXBContext.newInstance(CountryData.class).createMarshaller();
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    marshaller.marshal(countryData , os);
    log.debug("The PPV request raw XML -> " + os.toString());
} catch (JAXBException e) {
    // nothing to do
}

我正在使用JDK 6.0

I'm Using JDK 6.0

推荐答案

如果您从 XSD 然后你也会生成ObjectFactory类。如果没有，请参考此处，了解如何生成ObjectFactory类。

If you have generated Classes from XSD then you would also generated ObjectFactory class. If don't please refer here about how to generate ObjectFactory class.

之后，你的代码就像 -

After that, your code would be like--

JAXBContext context;
            context = JAXBContext.newInstance(*yourClass*.class);

final ObjectFactory objFactory = new ObjectFactory();

            final JAXBElement<YourClass> element = objFactory
                    .*autoGeneratedmethodfromObjectFactorytogetelement*;

Marshaller marshaller;
            marshaller = context.createMarshaller();

            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
                    Boolean.TRUE);
            final StringWriter stringWriter = new StringWriter();


            marshaller.marshal(element, stringWriter);
          String message = stringWriter.toString();

这将为您提供所需的输出。

This will give you desired output.

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