自增表新插一条数据后，获取插入数据的id：

mapper.xml

<select id="selectIdentity" resultType="java.lang.Long">
        SELECT @@identity
    </select>

mapper.java

Long selectIdentity();

代码中insert后直接调用即可获取刚才插入数据的id

Long id = jobHistoryMapper.selectIdentity();