spring的Jpa自定义查询操作和themleaf的动态传参

@Query(nativeQuery=false是默认的不用写,可以用jpql语言,value="from standard where name=?")
@Query(nativeQuery=true必须写,代表用sql语言,value="select * from standard where c_name=?")

1.SpringBoot Jpa 自定义查询

持久层Domain

public interface BaomingDao extends JpaRepository<BaomingBean,Integer> {
    
    @Query(value = "select distinct t.actid from BaomingBean t where t.belongs=?1")
    List<String> findDistinctActid(String belongs);
    //自定义SQL 语句根据belongs查询所有的actid 且去重 from + 实体类名称（非表名） actid 和 belongs 都是Bean中的属性，而非数据库字段名
}

控制器写法

@RequestMapping(value = "*")
public List<String> findDistinctSwiperName(@RequestParam("belongs") String belongs){
     return baomingDao.findDistinctActid(belongs);
}

 

2.themleaf中th:href传入动态参数
原创键盘源 最后发布于2019-05-13 09:31:08 阅读数 262 收藏
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html中:

<a th:href="@{'/toShowCar/'+${pagelist.car_number}}">ddd</a>
后台(采用restful风格):

@RequestMapping(value = "/toShowCar/{car_number}")
public String toShowCar(@PathVariable(required = true,value = "car_number")String car_number,Model model) {
CarInfo carInfo = carInfoService.selectCarByCar_number(car_number);
model.addAttribute("carInfo", carInfo);
return "single-CarInfoNew";
}