MyBatis中 ofType和javaType區別
轉自:https://blog.csdn.net/u013216156/article/details/78642920/
JavaType和ofType都是用來指定物件型別的,但是JavaType是用來指定pojo中屬性的型別,而ofType指定的是對映到list集合屬性中pojo的型別。
pojo類:
publicclass User {
privateint id;
privateString username;
privateString mobile;
privateList<Post>posts;
}
user.xml:
<resultMap type="User" id="resultUserMap">
<result property="id" javaType="int" column="user_id" />
<result property="username"
<result property="mobile" column="mobile" />
<!--javatype指定的是user物件的屬性的型別(例如id,posts),而oftype指定的是對映到list集合屬性中pojo的型別(本例指的是post型別)-->
<collection property="posts" ofType="com.spenglu.Post" javaType="java.util.ArrayList" column="userid">
<id property="id" column="post_id" javaType="int" jdbcType="INTEGER"/>
<result property="title" column="title" javaType="string" jdbcType="VARCHAR"/>
<result property="content" column="content" javaType="string" jdbcType="VARCHAR"/>
</collection>
</resultMap>