1，bookDao接口，添加注解，nativeQuery=true，表示启动本地查询，查询三个并随机排列
| @Query(value="select * from t_book order by RAND() limit ?1",nativeQuery=true) public List randomList(Integer num); |
2,BookController ,
| @ResponseBody @RequestMapping("/randomList") public List randomList(){ List bookList = bookDao.randomList(3); return bookList; } |
3，测试
