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  1. import javax.xml.bind.*;
  2. import javax.xml.bind.annotation.*;
  3. import javax.xml.bind.annotation.adapters.*;
  4. import java.io.*;
  5. import java.util.*;
  6.  
  7. @XmlRootElement(name="myroot")
  8. @XmlAccessorType(XmlAccessType.NONE)
  9. class SO19509130a {
  10.  
  11.     private String id;
  12.     private Properties props = new Properties();
  13.  
  14.     @XmlAttribute public String getId() { return id; }
  15.     public void setId(String id) { this.id = id; }
  16.  
  17.     @XmlElement
  18.     @XmlJavaTypeAdapter(SO19509130a.PropertiesAdapter.class)
  19.     public Properties getProperties() { return props; }
  20.     public void setProperties(Properties props) { this.props.putAll(props); }
  21.  
  22.     @XmlType(name="property") static class XmlProperty {
  23.         @XmlAttribute public String key;
  24.         @XmlValue public String value;
  25.     }
  26.  
  27.     @XmlType(name="properties") static class XmlProperties {
  28.         @XmlElement(name="entry") public Collection<XmlProperty> entries
  29.             = new ArrayList<XmlProperty>();
  30.     }
  31.  
  32.     static class PropertiesAdapter
  33.         extends XmlAdapter<XmlProperties, Properties>
  34.     {
  35.         public XmlProperties marshal(Properties props) {
  36.             XmlProperties xml = new XmlProperties();
  37.             for (Map.Entry<Object, Object> entry: props.entrySet()) {
  38.                 XmlProperty xmlEntry = new XmlProperty();
  39.                 xmlEntry.key = entry.getKey().toString();
  40.                 xmlEntry.value = entry.getValue().toString();
  41.                 xml.entries.add(xmlEntry);
  42.             }
  43.             return xml;
  44.         }
  45.         public Properties unmarshal(XmlProperties xml) {
  46.             Properties props = new Properties();
  47.             for (XmlProperty entry: xml.entries)
  48.                 props.setProperty(entry.key, entry.value);
  49.             return props;
  50.         }
  51.     }
  52.  
  53.     public static void main(String[] args) throws Exception {
  54.         SO19509130a obj = new SO19509130a();
  55.         obj.id = "theID";
  56.         obj.props.setProperty("key1", "val1");
  57.         obj.props.setProperty("key2", "val2");
  58.         JAXBContext ctx = JAXBContext.newInstance(SO19509130a.class);
  59.         Marshaller m = ctx.createMarshaller();
  60.         Unmarshaller u = ctx.createUnmarshaller();
  61.         ByteArrayOutputStream baos = new ByteArrayOutputStream();
  62.         m.marshal(obj, baos);
  63.         InputStream bais = new ByteArrayInputStream(baos.toByteArray());
  64.         obj = (SO19509130a)u.unmarshal(bais);
  65.         m.marshal(obj, System.out);
  66.         System.out.println();
  67.     }
  68. }
  69.  
Success #stdin #stdout 0.24s 381824KB
comments (?)
stdin 
Standard input is empty
stdout 
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><myroot id="theID"><properties><entry key="key2">val2</entry><entry key="key1">val1</entry></properties></myroot>
https://ideone.com/miZSYM
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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