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JAXB - Java/ XMLValue & XMLElement conflict

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南方客
南方客 2020-12-17 02:45

I have the next html, which I want to parse:

My input: 


     bla bla
2条回答
  • 暖寄归人
    暖寄归人 (楼主)
    2020-12-17 03:35

    UPDATE

    Any element that can have both child notes that are text and elements is said to have mixed content. In JAXB this corresponds to the @XmlMixed annotation. @XmlMixed can be used on its own on a collection property (see ORIGINAL ANSWER) or in combination with @XmlAnyElement, @XmlElementRef, or @XmlElementRefs. If the element can be anything you would use @XmlAnyElement, if it is one known element you would use @XmlElementRef and it is more than one known element you use @XmlElementRefs.

    Span

    If there will be both text and div elements within the same span element you could do the following by annotating a property with both @XmlElementRef and @XmlMixed. The element name specified on the @XmlElementRef annotation must correspond directly to the root element specified for the target class.

    @XmlRootElement
public class Span {

    List items = new ArrayList();

    @XmlMixed
    @XmlElementRef(type=Div.class, name="div")
    public List getItems() {
        return items;
    }

    public void setItems(List mixed) {
        this.items = items;
    }


}



    Div
    


    The metadata for Div is almost identical to the metadata specified for Span.
    


    @XmlRootElement
public class Div {

    List items = new ArrayList();

    @XmlElementRef(name="span", type=Span.class)
    @XmlMixed
    public List getItems() {
        return items;
    }

    public void setItems(List items) {
        this.items = items;
    }

}



    Demo
    


    public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Span.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Span span = (Span) unmarshaller.unmarshal(new StringReader("Text
    Text2
    Text3    "));
        System.out.println(span.getItems());

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(span, System.out);
    }

}

    


    Output
    


    [Text, forum15495156.Div@289f6ae, Text3]

Text
    Text2
    Text3    

    


    


    ORIGINAL ANSWER
    


    You could add a List property annotated with @XmlMixed to your Span class:
    


    Span
    


    import java.util.List;
import javax.xml.bind.annotation.*;

@XmlRootElement
public class Span {
    List
     div;
    List mixed;

    @XmlMixed
    public List getMixed() {
        return mixed;
    }

    public void setMixed(List mixed) {
        this.mixed = mixed;
    }

    public List
     getDiv() {
        return div;
    }

    @XmlElement
    public void setDiv(List
     div) {
        for (int i = 0; i < div.size(); i++) {
            System.out.print("element");
        }
        this.div = div;
    }
}

    


    Demo
    


    import java.io.StringReader;
import javax.xml.bind.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Span.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        Span span1 = (Span) unmarshaller.unmarshal(new StringReader("bla bla bla"));
        System.out.println(span1.getMixed());

        Span span2 = (Span) unmarshaller.unmarshal(new StringReader("
    "));
        System.out.println(span2.getDiv());
    }

}

    


    Output
    


    [bla bla bla]
elementelement[forum15495156.Div@1f80ce47, forum15495156.Div@4166a779]

    
    
    
             
    
                                                        
    
            
            
    
              
                
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