JAXB元素映射

注意： 我是 Eclipselink
JAXB（MOXy）的
负责人，并且是
JAXB（JSR-222）
专家组的成员。

使用任何JAXB（JSR-222）实现

使用任何JAXB（JSR-222）实现，您都可以使用

XmlAdapter

ThetaValueAdapter

package forum9799081;import javax.xml.bind.annotation.adapters.XmlAdapter;public class ThetaValueAdapter extends XmlAdapter<ThetaValueAdapter.Beta, String> {    @Override    public Beta marshal(String string) throws Exception {        Beta beta = new Beta();        beta.theta = string;        return beta;    }    @Override    public String unmarshal(Beta beta) throws Exception {        return beta.theta;    }    public static class Beta {        public String theta;    }}

豆豆

package forum9799081;import javax.xml.bind.annotation.*;import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;@XmlRootElement(name = "alpha")public class MyBean {    private String thetaValue;    @XmlElement(name="beta")    @XmlJavaTypeAdapter(ThetaValueAdapter.class)    public String getThetaValue() {        return this.thetaValue;    }    public void setThetaValue(String thetaValue) {        this.thetaValue = thetaValue;    }}

演示版

package forum9799081;import java.io.File;import javax.xml.bind.*;public class Demo {    public static void main(String[] args) throws Exception {        JAXBContext jc = JAXBContext.newInstance(MyBean.class);        File xml = new File("src/forum9799081/input.xml");        Unmarshaller unmarshaller = jc.createUnmarshaller();        MyBean myBean = (MyBean) unmarshaller.unmarshal(xml);        Marshaller marshaller = jc.createMarshaller();        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);        marshaller.marshal(myBean, System.out);    }}

input.xml /输出

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><alpha>    <beta>        <theta>abcd</theta>    </beta></alpha>

使用Eclipselink JAXB（MOXy）

使用MOXy，您可以使用

@XmlPath

package forum9799081;import javax.xml.bind.annotation.*;import org.eclipse.persistence.oxm.annotations.XmlPath;@XmlRootElement(name = "alpha")public class MyBean {    private String thetaValue;    @XmlPath("beta/theta/text()")    public String getThetaValue() {        return this.thetaValue;    }    public void setThetaValue(String thetaValue) {        this.thetaValue = thetaValue;    }}

想要查询更多的信息

• http://blog.bdoughan.com/2010/07/xpath-based-mapping.html
• http://blog.bdoughan.com/2011/09/mapping-objects-to-multiple-xml-schemas.html
• http://blog.bdoughan.com/2011/05/specifying-eclipselink-moxy-as-your.html