java类中获得spring中的bean

public class SpringTest {

public ApplicationContext getContext(){
String conf = "applicationContext.xml";
ApplicationContext ac =
new ClassPathXmlApplicationContext(conf);
return ac;
}

}

public class TestBookDao extends SpringTest{

@Test
public void test1(){
BookDao bookDao = getContext().getBean(
"bookDao",BookDao.class);//获得bean
List<NoteBook> list =
bookDao.findByUserId(
"48595f52-b22c-4485-9244-f4004255b972");
for(NoteBook book : list){
System.out.println(book.getCn_notebook_name());
}
}

}