@XStreamAlias("Pojo")
@Entity
public class Pojo {
    private String name;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long key;

    @XStreamOmitField
    private String hidden;

    public Pojo(String name,String hidden) {
        this.name = name;
        this.hidden = hidden;
    }
}

并在ServerResource中

@Get
public Pojo test() {
    Pojo pj= new Pojo("hansi","hinter");
    return pj;
}

得到我

<com.myComp.ORMTest.Pojo>
  <name>hansi</name>
  <hidden>hinter</hidden>
</com.myComp.ORMTest.Pojo>

任何想法为什么注释被忽略？