Caused by: java.sql.SQLException: Field 'id' doesn't have a default value

Because:

In hdm xml:

<generator class="native"></generator>

 

In department table:

+-----------+-------------+------+-----+---------+-------+
| Field     | Type        | Null | Key | Default | Extra |
+-----------+-------------+------+-----+---------+-------+
| id        | int(11)     | NO   | PRI | NULL    |       |
| name      | varchar(20) | NO   |     | NULL    |       |
| depart_id | int(11)     | NO   | MUL | NULL    |       |
+-----------+-------------+------+-----+---------+-------+

id is not auto-increment

Action:

 alter table department modify column id int NOT NULL AUTO_INCREMENT;

insert successfully.

 

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