java mysql 模糊查询like脚本格式问题，求大神搭救！

 1 public List<Student> querySomeStudent(String serachText){
 2         Transaction tx = null;
 3         String hql="";
 4         try{
 5             Session session = MyHibernateSessionFactory.getSessionFactory().getCurrentSession();
 6             tx = session.beginTransaction();
 7             hql="from Student where";
 8             StringBuffer hqlsb = new StringBuffer();
 9             hqlsb.append("studentName like ? or ");
10             hqlsb.append("studentNum like ? or ");
11             hqlsb.append("cellNum like ? or ");
12             hqlsb.append("className like ?");
13             hql+=hqlsb;
14             Query query = session.createQuery(hql).setString(1, "'%serachText%'").setString(2, "'%serachText%'")
15                     .setString(3, "'%serachText%'").setString(4, "'%serachText%'");//生成一个Query对象
16             List list= query.list();
17             tx.commit();
18             return list;
19         }
20         catch(Exception ex)
21         {
22             ex.printStackTrace();
23             tx.commit();
24             return null;
25         }
26         finally
27         {
28             if(tx!=null)
29             {
30                 tx=null;
31             }
32         }
33     }