我试图使用休眠 ORM 从数据库中检索数据,并使用 Struts2 将输出作为 json 结果。一切都可以从数据库中检索数据,但对于 json 结果,我只得到{}
.
我认为我的编码做错了。但是需要一些帮助才能弄清楚。
这是我的动作课:
@ParentPackage("json-default")
public class SocialIconsAction extends ActionSupport {
private List<TiendayaCurrencies> _currency;
public List<TiendayaCurrencies> getCurrency() {
return _currency;
}
public void setCurrency(List<TiendayaCurrencies> _currency) {
this._currency = _currency;
}
@Action(value = "currencies", results = {
@Result(name = "success", type = "json", params = {"includeProperties",
"_currency\\[\\d+\\]\\..*"})})
@Override
public String execute() {
_currency = loadCurrencies();
/*Nothing wrong with the DB results.Just to test everything works fine.*/
//for (TiendayaCurrencies _currency1 : _currency) {
// System.out.println("Title - "+_currency1.getTitle());
// }
return SUCCESS;
}
private List<TiendayaCurrencies> loadCurrencies() {
Session session = com.tiendaya.connection.HibernateUtil.
getSessionFactory().openSession();
List<TiendayaCurrencies> cList = session.
createCriteria(TiendayaCurrencies.class).list();
return cList;
}
}
Pojo类:
public class TiendayaCurrencies{
private Integer id;
private String title;
private String code;
private String symbolLeft;
private String symbolRight;
private char decimalPlace;
...
includeProperties 有什么问题吗?(只有我能想到的地方..)任何人都可以提出一种方法.. 我已经尝试了一切......
编辑 :
public class SocialIconsAction extends ActionSupport {
private List<TiendayaCurrencies> _currency=new ArrayList<>();
private String sample="working";
public String getSample() {
return sample;
}
public void setSample(String sample) {
this.sample = sample;
}
...
@Action(value = "currencies", results = {
@Result(name = "success", type = "json", params = {"includeProperties", "sample"})})
...
作为 json 输出,它给了我:{"sample":"working"}这意味着它工作正常。那么为什么它不能与ArrayList一起使用?