service层方法

 public <E> E outer(Function<Session, E> function) {

 return dao.outer(function);

 }

 dao层方法

 public <E> E outer(Function<Session, E> function) {

 return function.apply(this.sessionFactory.getCurrentSession());

 }

 controller层查询方法

 @RequestMapping(value = "/findEntityJson/{pageNum}")

 public @ResponseBody Object findEntityJson(

 　　   @PathVariable(value = "pageNum") Integer pageNum){

 final int pageSize = 5;

 return baseService.outer((session) -> {

 JSONObject json = new JSONObject();

 StringBuffer hql = new StringBuffer();//hql语句

 hql.append("from Entity where 1=1 ");

 Query dataQuery = session.createQuery(hql.toString());

 // 分页

 dataQuery.setFirstResult((pageNum - 1) * pageSize).setMaxResults(pageSize);

 json.put("data", Arrays.stream(dataQuery.list().toArray()).map(Entity.class::cast).collect(Collectors.toList()));

 // 列表数量查询

 String hql_1 = "select count(*) " + hql.toString();

 Query sizeQuery = session.createQuery(hql_1);

 json.put("size", sizeQuery.uniqueResult());

 return json;

 });

 }