I got a problem about hibernate query;

blow is the code:

Session session = this.getSession();
TBlogArticle article = (TBlogArticle)session.createQuery( "from TBlogArticle t where t.blogId=?").setLong(0, article.getBlogId()).uniqueResult();
I can get the "article"

If the code is :

TBlogArticle articleobj = (TBlogArticle)baseDao.get(TBlogArticle.class, article.getBlogId());
There will be a nullpointer. "articleobj" is null（table "TBlogArticle " has a primary key）;

why ?

thanks very much!

中文
使用createQuery方法能查出对象
Session session = this.getSession();
TBlogArticle articleobj = (TBlogArticle)session.createQuery( "from TBlogArticle t where t.blogId=?").setLong(0, article.getBlogId()).uniqueResult();


为什么使用hibernate的get()或者load()方法就不能查询出对象,且出现空指针异常
TBlogArticle articleobj = (TBlogArticle)baseDao.get(TBlogArticle.class, article.getBlogId());求教大师，谢谢！

How should any person help you, if you don't report here the code of your baseDao class
and if you don't report the NullPointerException with stacktrace.
Please also provide the line-numbers of your java-code so that from the stacktrace is visible which exactly is the line which throws NullPointerException

Thanks for your reply!

I have found why through checking code.
My mind is cluttered with thoughts in several days.

My english is not very well ,I hope you can understand what i said.

I am studying hard!