将对象序列化为json

Question

我将java对象序列化为json，我想做类似下面的事情，但我不知道该怎么做。

我有这个课程

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class Lookups implements IRsData {

    private List<LookupTO> lookups;

    public List<LookupTO> getLookups() {
        return lookups;
    }

    public void setLookups(List<LookupTO> lookups) {
        this.lookups = lookups;
    }
}

生成此输出

lookups: {
lookups: [2]
0:  {
code: "Hangout"
name: "Hangout"
}
1:  {
code: "Football"
name: "Football"
}
}

但我希望它像那样

lookups: [2]
0:  {
code: "Hangout"
name: "Hangout"
}
1:  {
code: "Football"
name: "Football"
}

我必须做些什么来实现我的目标？