hibernate 懒加载

hibernate

启用和关闭懒加载

down vote
The reason is that when you use lazy load, the session is closed.
There are two solutions.
Don't use lazy load.

Set lazy=false in XML or Set @OneToMany(fetch = FetchType.EAGER) In annotation.

Use lazy load.

Set lazy=true in XML or Set @OneToMany(fetch = FetchType.LAZY) In annotation.

and add OpenSessionInViewFilter filter in your web.xml
Detail See my post.
http://stackoverflow.com/a/27286187/1808417