Java XStream不转换xml标记

我有一个xml。我想转换成object，xstream可以很好地转换所有标记，除了其中一个它给出的null

你知道这个问题吗

xml:

当我检查对象person时，所有变量都正常，但address总是空的

我试过这个：

_xstream.aliasType("person", PersonType.class);
_xstream.aliasType("address", AddressType.class);
_xstream.aliasField("city", AddressType.class, "city");
_xstream.aliasField("country", AddressType.class, "country");

---

但还是不行

在这种情况下，别名的使用是多余的。XStream将自动转换字段的名称

无论如何，你的地址似乎是一个嵌套类型。您对两个别名使用相同的类型：

_xstream.aliasType("person", PersonType.class);
_xstream.aliasType("address", PersonType.class);

应该是

_xstream.aliasType("address", AddressType.class);

用于地址别名。

Java代码：

 @XStreamAlias("person")
 public class Person {

 @XStreamAlias("name")
 private String Name;

 @XStreamAlias("age")
 private long Age;

 @XStreamImplicit(itemFieldName = "address")
 private List addresses = new ArrayList();
 }

 @XStreamAlias("adress")
 public class Address{

 @XStreamAlias("city")
 private String City;

 @XStreamAlias("country")
 private String Country;
 }

主要代码：

FileReader reader = new FileReader("file.xml"); // load file

XStream xstream = new XStream();
xstream.processAnnotations(Person.class);
xstream.processAnnotations(Address.class);

Person person = (Person) xstream.fromXML(reader);

我相信在你们班里，地址是指对象地址。如果是这样，您需要这样做：

Person.java

public class Person{
private String name;
    private int age;
    private Address address;
    public String getName(){
        return name;
    }
    public int getAge(){
        return age;}
    public String getcity(){
        return address.getCity();
    }
    public String getCountry(){
        return address.getCountry();
    }
}

Address.java

public class Address {
    private String city;
    private String country;
    public String getCity(){
        return city;
    }
    public String getCountry(){
        return country;
    }
}

JAVA CODE

FileReader xmlReader = new FileReader("file.xml"); // load file

XStream stream = new XStream(new StaxDriver());
stream.alias("person",Person.class);//Since in your xml file `person` is tag

Person person = (Person) stream.fromXML(xmlReader);

System.out.println("Name:"+person.getName()+"\nAge:"+person.getAge()+
           "\nCity:"+person.getCity()+"\nCountry:"+person.getCountry();

---

请编辑您的问题，并向我展示所涉及的课程地址类型和个人类型

FileReader reader = new FileReader("file.xml"); // load file

XStream xstream = new XStream();
xstream.processAnnotations(Person.class);
xstream.processAnnotations(Address.class);

Person person = (Person) xstream.fromXML(reader);

Person.java

public class Person{
private String name;
    private int age;
    private Address address;
    public String getName(){
        return name;
    }
    public int getAge(){
        return age;}
    public String getcity(){
        return address.getCity();
    }
    public String getCountry(){
        return address.getCountry();
    }
}

Address.java

public class Address {
    private String city;
    private String country;
    public String getCity(){
        return city;
    }
    public String getCountry(){
        return country;
    }
}

JAVA CODE

FileReader xmlReader = new FileReader("file.xml"); // load file

XStream stream = new XStream(new StaxDriver());
stream.alias("person",Person.class);//Since in your xml file `person` is tag

Person person = (Person) stream.fromXML(xmlReader);

System.out.println("Name:"+person.getName()+"\nAge:"+person.getAge()+
           "\nCity:"+person.getCity()+"\nCountry:"+person.getCountry();