【转】mybatis 获取自增id

转自：http://www.cnblogs.com/rhythmK/p/4047142.html

1、环境：

mybatis : 3.2.3

spring-mybatis:  1.2.1

mysql:5.5.29

实体：

public class sys_user {
    private int userid;

    private String username;

    public int getUserid() {
        return userid;
    }

    public void setUserid(Integer userid) {
        this.userid = userid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username == null ? null : username.trim();
    }

insert 节点配置：

  <insert id="insert" parameterType="com.mamaguwen.entity.sys_user"   useGeneratedKeys="true" keyProperty="userid">

<!--    <selectKey keyProperty="userid" resultType="int" order="BEFORE">
         SELECT LAST_INSERT_ID()  as  userid
     </selectKey> -->
    insert into sys_user ( UserName)
    values (#{username})

  </insert>

keyProperty:对应为实体字段值

调用代码：

sys_UserDao.insert(model);
System.out.println("getUserid:"+ model.getUserid());