java - 扩展类的 JMapper XML 配置

Question

我想配置 xml 文件以映射到扩展类，但得到一个 UndefinedMappingException。我能找到的唯一相关主题是 this

这是我的实现:

JMapper<RequestD, RequestS> mapper =
            new JMapper<>(RequestD.class, RequestS.class, "jmapper.xml");
    RequestD requestD = mapper.getDestination(someRequestS);

目标类:

public class RequestD extends RequestBase {
    private static final long serialVersionUID = 1L;
}

扩展类:

public abstract class RequestBase implements Serializable {
private static final long serialVersionUID = 1L;

private Language language;
private DateTime requestDateTime;
private String currency;
private Order order;

/**
 * Getters and Setters 
 */

源类:

@XmlRootElement(name = "RequestS")
public class RequestS {

    @Valid
    protected Language language;
    @XmlElement(type = String.class)
    @XmlJavaTypeAdapter(Adapter1 .class)
    @XmlSchemaType(name = "dateTime")
    protected DateTime requestDateTime;
    @XmlElement(required = true)
    @NotNull
    @Valid
    protected Order order;

/**
 * Getters and Setters  
 */

jmapper.xml:

<jmapper>
    <class name="package.RequestD">
        <attribute name="language">
            <value name="language"/>
        </attribute>
    </class>
</jmapper>

Answer 1

UndefinedMappingException 被抛出是因为属性 language 在目标类 RequestD 中不存在，你不应该尝试映射它。

而是将目标类配置为使用全局映射工具:

<jmapper>
    <class name="package.RequestD">
        <global/>
    </class>
</jmapper>

这将允许找到用于映射的扩展类。

注意:您应该为每个要映射属性的目标类提供配置。下面的示例包括上面未显示的属性，但构成了一个更完整的示例:

<jmapper>
    <class name="package.RequestD">
        <global/>
    </class>

    <class name="package.Language">
        <attribute name="name">
            <value name="name"/>
        </attribute>
    </class>

    <class name="package.Order">
        <attribute name="number">
            <value name="number"/>
        </attribute>
        <attribute name="reference">
            <value name="reference"/>
        </attribute>
    </class>
</jmapper>