mybatis与mysql插入数据返回主键

<insert id="insertAndGetId" useGeneratedKeys="true" keyProperty="userId" parameterType="com.chenzhou.mybatis.User">
    insert into user(userName,password,comment)
    values(#{userName},#{password},#{comment})
</insert>

 如上所示，我们在insert中指定了keyProperty="userId"，其中userId代表插入的User对象的主键属性。

 

User.java

public class User {
    private int userId;
    private String userName;
    private String password;
    private String comment;

    //setter and getter
}