一、使用Oracle 序列器作为自增主键
1.mapper配置
<insert id="create" parameterType="MyBean"> <selectKey resultType="int" order="BEFORE" keyProperty="id"> <![CDATA[ SELECT SEQUENCE_ID.NEXTVAL AS id FROM DUAL ]]> </selectKey> <![CDATA[ INSERT INTO MYTABLE (ID, NAME) VALUES (#{id}, #{name}) ]]> </insert>
注意:mybatis先执行selectKey将序列值注入到目标属性keyProperty中后再执行insert操作。
2.bean定义
public class MyBean { private int id=0; private String name=null; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } }
3.handler接口定义
public interface MyBeanHandler { public int create(MyBean bean); }
注意:参数不要使用@Param()