JAXB和带有元素列表的属性排序(JAXB and property ordering with list of elements)

 我正在使用JAXB来解组xml文件。 这是我的元素功能的代码，但我想在元素功能中有一个特殊的元素顺序，就像这样 
 
<feature>
  <name>2D Polynomial Approximation of Log of ConstantQ</name>
  <active>false</active>
  <attribute>50</attribute>
  <attribute>20</attribute>
  <attribute>10</attribute>
  <attribute>10</attribute>
</feature>
 
 我检查了@XmlType（propOrder = {}）的一些教程，但我找不到像这里的属性元素这样的元素列表进行排序的方法。 
 
 这是我的代码 
 
@XmlRootElement(name = "feature")
@XmlType(propOrder = {"name", "active","attribute"})
public class Feature{

    String name;

    boolean active;

    List<String> attributes = new LinkedList<String>();

    /**
     * name element of feature element
     * @return
     */
    @XmlElement(name = "name")
    public final String getName(){
        return this.name;
    }

    public final void setName(String name){
        this.name = name;
    }

    /**
     * active element
     * @return
     */
    @XmlElement(name = "active")
    public final boolean getActive(){
        return this.active;
    }

    public final void setActive(boolean active){
        this.active = active;
    }

    /**
     * attribute elements
     * @return
     */
    @XmlElement(name = "attribute")
    public final List<String> getAttributes(){
        return this.attributes;
    }

    public final void setAttributes(List<String> attributes){
        this.attributes = attributes;
    }
}
 
 它总是抛出异常，因为我只在propOrder中定义了一个属性。 但由于属性是多个，可能是一个或多个，我不知道实现它。 或者你知道其他一些订购元素的方法 
 
 感谢您的帮助 

I am using JAXB to unmarshall xml file. here is my code for the element feature, but I wanna have a special order of the elements in the element feature, like this
 
<feature>
  <name>2D Polynomial Approximation of Log of ConstantQ</name>
  <active>false</active>
  <attribute>50</attribute>
  <attribute>20</attribute>
  <attribute>10</attribute>
  <attribute>10</attribute>
</feature>
 
I checked some tutorial of @XmlType(propOrder = {}), but I cannot find a way to order with list of elements like the attribute elements here.
 
here is my codes
 
@XmlRootElement(name = "feature")
@XmlType(propOrder = {"name", "active","attribute"})
public class Feature{

    String name;

    boolean active;

    List<String> attributes = new LinkedList<String>();

    /**
     * name element of feature element
     * @return
     */
    @XmlElement(name = "name")
    public final String getName(){
        return this.name;
    }

    public final void setName(String name){
        this.name = name;
    }

    /**
     * active element
     * @return
     */
    @XmlElement(name = "active")
    public final boolean getActive(){
        return this.active;
    }

    public final void setActive(boolean active){
        this.active = active;
    }

    /**
     * attribute elements
     * @return
     */
    @XmlElement(name = "attribute")
    public final List<String> getAttributes(){
        return this.attributes;
    }

    public final void setAttributes(List<String> attributes){
        this.attributes = attributes;
    }
}
 
It always throw out exception, since I only define one attribute in propOrder. But since the attribute is multiple, could be one or more, I do not have any idea to implement it. Or do you know some other way to order the elements
 
Thanks for your help in advance

原文：https://stackoverflow.com/questions/20708049