MybatisPlus QueryWrapper and or 连用

Posted 2023-02-22 cnsu-cmh

QueryWrapper<User> userWrapper = new QueryWrapper<>();
String type = (String) map.get("type");
if(StringUtils.isNotBlank(type)) 
    userWrapper.eq("is_admin", "admin".equals(type) ? true : false);

String keys = (String) map.get("key");
if(StringUtils.isNotBlank(keys)) 
    userWrapper.and(wrapper -> wrapper.like("login_name", keys).or().like("tel", keys).or().like("email", keys));

控制台sql打印为：

SELECT
        id,
        login_name AS loginName,
        nick_name AS nickName,
        password,
        salt,
        tel,
        email,
        locked,
        is_admin AS adminUser,
        icon,
        create_by AS createId,
        create_date AS createDate,
        update_by AS updateId,
        update_date AS updateDate,
        del_flag AS delFlag,
        remarks 
    FROM
        sys_user 
    WHERE
        is_admin = 0 
        AND (
            login_name LIKE '%j%' 
            OR tel LIKE '%j%' 
            OR email LIKE '%j%' 
        )

切记不能丢了and 

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