Mybatis报错

1.

org.apache.ibatis.exceptions.PersistenceException: 
### Error updating database.  Cause: java.sql.SQLException: Column count doesn't match value count at row 1
### The error may involve com.itheima.dao.IUserDao.saveUser-Inline
### The error occurred while setting parameters
### SQL: insert into user {username,address,sex,birthday}values (?, ?, ?,         ?);
### Cause: java.sql.SQLException: Column count doesn't match value count at row 1

原因：映射文件括号写成大括号了，改成(username,address,sex,birthday)

    
        
        
            select last_insert_id();
        
        insert into user {username,address,sex,birthday}values (#{userName}, #{userAddress}, #{userSex},
        #{userBirthday});