Question

我使用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。感谢。

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
}

我使用JDK 6.0

Answer 1

如果您已从XSD生成了类，那么您还将生成ObjectFactory类。如果不这样做，请参考here有关如何生成ObjectFactory类的信息。

之后，您的代码就像 -

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。

Answer 2

此行为取决于实现。我偶然发现了相反的问题（我需要自动关闭标记）并且我以this方式解决了。
您可以尝试使用this version of marshal()或修改链接答案中的代码。

Answer 3

I know both are equals but he is not agree with me.

他错了。作为一名软件专业人士，您必须学习如何告诉客户他的错误。如果您是电工并且您的客户要求您以不正确的方式连接开关，您会告诉他作为专业人员您必须遵守行业标准。

Answer 4

问题解决了，要强制关闭标签，只需添加一个空字符串作为此标签的值即可！您可以使用@XmlValue进行操作：

public class closedTag {

    @XmlValue
    private String content;


    public closedTag() {
        this.content = "";
    }

}

如何使用JAXB为XML中的空元素生成结束标记

4 个答案: