Spring Data JPA方法名命名

Spring Data JPA方法名命名

Spring官网截图

代码如下：

关键字	方法命名	sql where字句
And	findByNameAndPwd	where name= ? and pwd =?
Or	findByNameOrSex	where name= ? or sex=?
Is,Equals	findById,findByIdEquals	where id= ?
Between	findByIdBetween	where id between ? and ?
LessThan	findByIdLessThan	where id < ?
LessThanEqual	findByIdLessThanEqual	where id <= ?
GreaterThan	findByIdGreaterThan	where id > ?
GreaterThanEqual	findByIdGreaterThanEqual	where id > = ?
After	findByIdAfter	where id > ?
Before	findByIdBefore	where id < ?
IsNull	findByNameIsNull	where name is null
isNotNull,NotNull	findByNameNotNull	where name is not null
Like	findByNameLike	where name like ?
NotLike	findByNameNotLike	where name not like ?
StartingWith	findByNameStartingWith	where name like '?%'
EndingWith	findByNameEndingWith	where name like '%?'
Containing	findByNameContaining	where name like '%?%'
OrderBy	findByIdOrderByXDesc	where id=? order by x desc
Not	findByNameNot	where name <> ?
In	findByIdIn(Collection c)	where id in (?)
NotIn	findByIdNotIn(Collection c)	where id not in (?)
True	findByAaaTue	where aaa = true
False	findByAaaFalse	where aaa = false
IgnoreCase	findByNameIgnoreCase	where UPPER(name)=UPPER(?)

举例（以like为例）

模糊查询：我这里是根据username进行模糊查询，关键字Like，方法命名时，findByUsernameLike(),仿照样品的形式，JPQL片段：where x.username like…

html代码

 

            根据name查询： 
        

controller代码

@PostMapping("/searchusers.html")
    public String searchUsers(Model model,String searchByUsername){
        List users = userService.findByUsernameLike("%"+searchByUsername+"%");
        model.addAttribute("users",users);
        return "userlist";
    }

service代码

//模糊查询
    List findByUsernameLike(String searchByUsername);

serviceImpl代码

    @Override
    public List findByUsernameLike(String searchByUsername) {
        return userDao.findByUsernameLike(searchByUsername);
    }

dao代码

    List findByUsernameLike(String searchByUsername);