如何让 JAXB 选择枚举？

Question

我正在尝试将 XML 文本转换为 Java 对象，但 prQueryStatus XML 属性中有一个数字。 Java 字段的类型是 enum。有没有办法让 JAXB 选择我的 enum?

Strxml:

 <custom prQueryStatus="1" ></custom>

错误行：

  CustAttrPrQuery custom = (CustAttrPrQuery)XmlOperations.deserializeFromXML(CustAttrPrQuery.class, strXmlCustom);

XmlOperations.deserializeFromXML():

public static Object deserializeFromXML(Class obj, String strXml) {

    Object result = null;
    JAXBContext jaxbContext;
    try {
        jaxbContext = JAXBContext.newInstance(obj);

        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

        StringReader reader = new StringReader(strXml);

        result = unmarshaller.unmarshal(reader);
        return result;

    } catch (JAXBException e) {
       return new String("-3 JAXB deSerialize Error");
    }

}

CustAttrPrQuery:

@XmlAccessorType(javax.xml.bind.annotation.XmlAccessType.FIELD)
@XmlRootElement(name = CustAttrPrQuery.RootElement)
public class CustAttrPrQuery {

    public final static String RootElement = "custom";

    @javax.xml.bind.annotation.XmlAttribute
    private PrQueryStatus prQueryStatus = PrQueryStatus.NONE;

    public PrQueryStatus getPrQueryStatus() {
        return prQueryStatus;
    }

    public void setPrQueryStatus(PrQueryStatus prQueryStatus) {
        this.prQueryStatus = prQueryStatus;
    }

}

枚举：

public enum PrQueryStatus {
  NONE,
  ACIK,
  TUMU
}

Answer 1

您需要用 @XmlEnum 注释您的枚举类型及其常量@XmlEnumValue，这样 JAXB 就会知道如何从 XML 属性（"0"、"1"、"2"）映射到枚举常量（NONE、ACIK , TUMU):

@XmlEnum
public enum PrQueryStatus {
    @XmlEnumValue("0") NONE,
    @XmlEnumValue("1") ACIK,
    @XmlEnumValue("2") TUMU
}

如何让 JAXB 选择枚举？

How do I get JAXB to choose enum?

java

xml

enums

jaxb