java - JAXB - 如何在没有 header 的情况下编码(marshal) Java 对象

Question

我正在尝试编码(marshal) java 对象，但我想删除 Jaxb 引入的 header 。

对象:

@XmlRootElement
public class FormElement implements Serializable {
    private String id;
    private String name;
    private Integer order;
}

预期输出:

<element>
    <id>asd</id>
    <name>asd</name>
    <order>1</order>
</element>

我的输出:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<formElement>
  <id>asd</id>
  <name>asd</name>
  <order>1</order>
</formElement>

我的编码方法:

public String marshal() {
        JAXBContext context;
        try {
            context = JAXBContext.newInstance(FormElement.class);
            Marshaller marshaller = context.createMarshaller();
            StringWriter stringWriter = new StringWriter();
            marshaller.marshal(this, stringWriter);
            return stringWriter.toString();
        } catch (JAXBException e) {
        }
        return null;
    }

如何删除它？

提前致谢。

Answer 1

我已经使用它解决了

marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);

并将 (name = "element") 添加到 @XmlRootElement 注释中。

正确的方法:

public String marshal() {
    JAXBContext context;
    try {
        context = JAXBContext.newInstance(FormElement.class);
        Marshaller marshaller = context.createMarshaller();
        StringWriter stringWriter = new StringWriter();
        marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
        marshaller.marshal(this, stringWriter);
        return stringWriter.toString();
    } catch (JAXBException e) {
        String mess = "Error marshalling FormElement " + e.getMessage()
                + (e.getCause() != null ? ". " + e.getCause() : " ");
        System.out.println(mess);
    }
    return null;
}

正确的注释:

@XmlRootElement(name = "element")