import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "User")
@XmlAccessorType(XmlAccessType.FIELD)
public class User {
private String id;
private String username;
private String password;
private Expense e;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
@XmlAttribute(name = "ID")
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
This is a JAXB configuration issue, the JAXB runtime thinks there are
two properties to be serialized with the same name, one that is the
protected and field and one which is the JavaBean property method.
"If JAXB binds a class to XML, then, by default, all public members
will be bound, i.e., public getter and setter
pairs, or public fields. Any protected, package-visible or private
member is bound if it is annotated with a suitable
annotation such as XmlElement or XmlAttribute."
If you annotate your Artifact class with the annotation:
@XmlAccessorType(XmlAccessType.FIELD)
then you do not need to annotate the fields with @XmlElement and the
setter/getter methods will be ignored.
意思是jaxb的配置问题,成员变量的修饰符为public的可以不设置
@XmlAccessorType(XmlAccessType.FIELD)
如果不是public的字段需要设置此属性。