1、hql参数化查询，不明确值类型的用setParameter方法；明确查询结果为一条记录的用uniqueResult方法查询
注意，参数化查询中方法setString 或 setParameter如果使用索引方式赋值，索引值从0开始，区别JDBC
public void func1(){
Session session=HibernateUtils.getSession();
session.beginTransaction();
String hql="from Customer where name=:name";
Query query=session.createQuery(hql);
//传参数
//query.setString("name", "Tom");或者下面
query.setParameter("name", "Tom");
//List<Customer>cusList=query.list();
//如果明确知道查询结果就一条记录，则用下面方法
Customer customer=(Customer) query.uniqueResult();
session.getTransaction().commit();
session.close();
//System.out.println(cusList.get(0).getName());
System.out.println(customer.getName());
}2、hql分页查询
public void func2(){
Session session=HibernateUtils.getSession();
session.beginTransaction();
Query query=session.createQuery("from Customer");
//设置起始行索引
query.setFirstResult(1);
//设置最多返回记录数量
query.setMaxResults(2);
List<Customer>cusList=query.list();
session.getTransaction().commit();
session.close();
System.out.println(cusList.get(0).getName()+","+cusList.get(0).getId());
System.out.println(cusList.get(1).getName()+","+cusList.get(1).getId());
}3、qbc分页查询
public void func1(){
Session session=HibernateUtils.getSession();
session.beginTransaction();
Criteria criteria=session.createCriteria(Customer.class);
//设置起始行索引
criteria.setFirstResult(1);
//设置最多返回记录数量
criteria.setMaxResults(2);
List<Customer>cusList=criteria.list();
System.out.println(cusList.get(0).getName()+","+cusList.get(0).getId());
System.out.println(cusList.get(1).getName()+","+cusList.get(1).getId());
session.getTransaction().commit();
session.close();
}4、qbc条件查询
public void func2(){
Session session=HibernateUtils.getSession();
session.beginTransaction();
Criteria criteria=session.createCriteria(Customer.class);
//设置查询条件，name等于Tom的
criteria.add(Restrictions.eq("name", "Tom"));
//已明确查询结果为一条记录
Customer customer=(Customer) criteria.uniqueResult();
session.getTransaction().commit();
session.close();
System.out.println(customer.getName());
}5、qbc复杂条件查询
public void func3(){
Session session=HibernateUtils.getSession();
session.beginTransaction();
Criteria criteria=session.createCriteria(Customer.class);
//设置查询条件，name等于Tom的
criteria.add(Restrictions.eq("name", "Jack")).add(Restrictions.or(Restrictions.gt("id", 3), Restrictions.eq("city", "上海")));
List<Customer> cusList=criteria.list();
session.getTransaction().commit();
session.close();
for (int i = 0; i < cusList.size(); i++) {
System.out.println(cusList.get(i).getId());
}
}