无法在jaxb中解组阴影类变量

时间:2013-10-19 14:26:43

标签: java jaxb xml-serialization unmarshalling

@XmlSeeAlso(Employee.class)
public abstract class Person {
     protected String name;

     public String getName() {
        return name;
     }

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

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Employee extends Person {
     private String name;

     public String getName() {
        return name;
     }

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

并在我的public static main()中,我setName(“John”)并将其编组为xml。

这会生成一个XML: -

<Employee>
     <name>John</John>
</Employee>

但是,当我将其解组到Employee对象时,super和local类的名称变量都没有初始化为'John'。我怀疑它为继承类和父类共享同名变量。我知道这是不好的做法,但是怎么可以解雇员工类呢?还是两个?

谢谢你。

1 个答案:

答案 0 :(得分:0)

这个问题的答案从基本的java主体开始。由于派生类重写setName和getName。 (new Employee())。setName(“John”)填充Employee的名称而不是Person的名称。因此,如果要填充两个类的属性,则应将人员类更改为

@XmlSeeAlso(Employee.class)
public abstract class Person {
     protected String firstName;

     public String getFirstName() {
    return firstName;
     }

     public void setFirstName(String firstName) {
     this.firstName = firstName;
     }
}

并做这个元帅。

Employee e = new Employee();
e.setName("John");
e.setLastName("JohnLast");

然后你的xml看起来像

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<employee>
    <lastName>JohnLast</lastName>
    <name>John</name>
</employee>

和xsd

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema version="1.0" xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:element name="employee" type="employee"/>

  <xs:complexType name="employee">
    <xs:complexContent>
      <xs:extension base="person">
    <xs:sequence>
      <xs:element name="name" type="xs:string" minOccurs="0"/>
    </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>

  <xs:complexType name="person" abstract="true">
    <xs:sequence>
      <xs:element name="lastName" type="xs:string" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>
</xs:schema>

并且在解组后的工作和名称和lastName被填充,

JAXBContext context = JAXBContext.newInstance(Employee.class);
Unmarshaller unmarshaller = context.createUnmarshaller();
Employee e = (Employee) unmarshaller.unmarshal(xml);
Person p = (Person) unmarshaller.unmarshal(xml);