Java HTML/XML - 如何使用xml表达式和数据的xml模式和键值对生成xml

import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;

public class Main {

  public static void main(String[] args) throws Exception {
    Map map = new HashMap<String, String>();
    map.put("cluster", "10.200.111.111");
    map.put("cluster1", "10.200.121.111");

    Product xml = new Product();
    List<Top> top1 = new ArrayList<Top>();
    Set<String> keys = map.keySet();
    for (String key : keys) {
      Top top = new Top();
      top.setMode(key);
      top.setAddress((String) map.get(key));
      top1.add(top);
    }
    xml.setTop(top1);
    File file = new File("C:\\kar\\file.xml");
    JAXBContext jaxbContext = JAXBContext.newInstance(Product.class);
    Marshaller jaxbMarshaller = jaxbContext.createMarshaller();

    // output pretty printed
    jaxbMarshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

    jaxbMarshaller.marshal(xml, file);
    jaxbMarshaller.marshal(xml, System.out);
  }
}


@XmlRootElement(name="top")
@XmlType(name="top")
@XmlAccessorType(XmlAccessType.FIELD)
public class Top {

    @XmlElement(name="mode", required=true)
    private String mode;

    @XmlElement(name="mode", required=true)
    private String address;

    public String getMode() {
        return mode;
    }

    public void setMode(String mode) {
        this.mode = mode;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}
@XmlRootElement(name="root")
@XmlType(name="root")
@XmlAccessorType(XmlAccessType.FIELD)
public class Product {


    @XmlElement(name="Top")
    private List<Top> top;

    public List<Top> getTop() {
        return top;
    }

    public void setTop(List<Top> top) {
        this.top = top;
    }

}