https://blog.csdn.net/u011229848/article/details/81902398

 

MybatisPlus QueryWrapper and or 连用

cnsu-cmh 2018-08-21 10:08:03  96287  收藏 26

分类专栏： MybatisPlus 文章标签： MybatisPlus and or 连用 QueryWrapper and

版权

1. QueryWrapper<User> userWrapper = new QueryWrapper<>();

2. String type = (String) map.get("type");

3. if(StringUtils.isNotBlank(type)) {

4. userWrapper.eq("is_admin", "admin".equals(type) ? true : false);

5. }

6. String keys = (String) map.get("key");

7. if(StringUtils.isNotBlank(keys)) {

8. userWrapper.and(wrapper -> wrapper.like("login_name", keys).or().like("tel", keys).or().like("email", keys));

9. }

控制台sql打印为：

1. SELECT

2.         id,

3.         login_name AS loginName,

4.         nick_name AS nickName,

5.         password,

6.         salt,

7.         tel,

8.         email,

9.         locked,

10.         is_admin AS adminUser,

11.         icon,

12.         create_by AS createId,

13.         create_date AS createDate,

14.         update_by AS updateId,

15.         update_date AS updateDate,

16.         del_flag AS delFlag,

17.         remarks 

18.     FROM

19.         sys_user 

20.     WHERE

21.         is_admin = 0 

22.         AND (

23.             login_name LIKE '%j%' 

24.             OR tel LIKE '%j%' 

25.             OR email LIKE '%j%' 

26.         )

切记不能丢了and 

1. userWrapper.like("login_name", keys).or().like("tel", keys).or().like("email", keys)

2. userWrapper.eq("is_admin", "admin".equals(type) ? true : false);

这个条件是不带括号的

WHERE
        is_admin = 0 
        AND login_name LIKE '%j%' 
        OR tel LIKE '%j%' 
        OR email LIKE '%j%' 

 

or(Function<This, This> func), and(Function<This, This> func) 会为func返回的条件添加括号 or(sql...) and(...)