[mybatis]Mapper XML Files_获取自增主键的值

• useGeneratedKeys = “true”；使用自增主键获取主键值策略
• keyProperty；指定对应的主键属性，也就是mybatis获取主键值后，将这个值封装给javaBean的对应属性

  <insert id="addEmp" useGeneratedKeys="true" keyProperty="id" >

        insert into tb1_employee(last_name,email,gender)
        values(#{lastName},#{email},#{gender})
    insert>

public class Employee {

    private Integer id;//自增主键
    private String lastName;
    private String email;
    private String gender;
   }