Mybatis 插入一条或批量插入 返回带有自增长主键记录

 首先讲一下，  插入一条记录返回主键的 Mybatis 版本要求低点，而批量插入返回带主键的 需要升级到3.3.1版本，3.3.0之前的都不行,

<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>3.3.1</version>
</dependency>

1.MySQL

 <insert id="insertByBatch" useGeneratedKeys="true" keyProperty="id" parameterType="java.util.List">
    insert into test ( gmt_create, 
      gmt_modify, create_user)
    values
    	<foreach collection="list" item="item" index="index" separator=",">
          ( 
      		SYSDATE(), 
      		SYSDATE(),
      		#{item.createUser,jdbcType=VARCHAR})
       </foreach>
  </insert>

　　单条和多条  使用都是一样的， 加入useGeneratedKeys="true" keyProperty="主键字段" 

2.Oracle

 <insert id="insertBatch">  
    <selectKey keyProperty="id" resultType="Long" order="BEFORE">  
        select test.nextval as id from dual  
    </selectKey>  
    insert into test  
    (id,value,gmt_create,gmt_modified)  
    select test.nextval, A.* FROM (  
    <foreach collection="list" item="item" index="index"  
        separator="union all">  
        select  
        #{item.value,jdbcType=VARCHAR},  
        #{item.gmtCreate,jdbcType=DATE},  
        #{item.gmtModified,jdbcType=DATE}  
        from  
        dual  
    </foreach>  
    ) A  
 </insert>