java类的泛型DAO

@Transactional

public abstract class DAOSupport<T> implements DAO<T> {

    protected Class<T> clazz = GenericUtil.getGenericSuperClass(this.getClass());

    @Resource

    protected SessionFactory sessionFactory;



    public T find( Integer id) {

        

        

        return (T)sessionFactory.getCurrentSession().get(clazz, id);

    }

}

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public class GenericUtil {



    public static Class getGenericSuperClass(

            Class clazz) {

    

        Type type = clazz.getGenericSuperclass();

        if(!(type instanceof ParameterizedType)){

            throw new RuntimeException();

        }

        ParameterizedType parameterizedType=(ParameterizedType)type;

        Type [] types = parameterizedType.getActualTypeArguments();

        

        return (Class)types[0];

    }



}

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java里貌似不能如.net typeof(T)来获取，hibernate居然也没有session.get<T>(object id)这样的方法。。。,而必须时session.get(clazz,object)这样，貌似就要像上面这样转个圈才能获取。