标签:array list pen https param 推荐 ref collect type
MyBatis 推荐的传参方式如果要详细的学习 MyBatis,推荐看这个教程:https://www.w3cschool.cn/mybatis/
//接口方法
int getAgeById(Integer id);
//xml映射文件
<select id="getAgeById" resultType="Integer">
select age from user where user_id = #{id}
</select>
//接口方法
User login(@Param("username") String username, @Param("password") String password);
//xml映射文件
<select id="login" resultMap="BaseResultMap">
select
*
from user
where username = #{username} and password = #{password}
</select>
//接口方法
ArrayList<User> selectByIds(Integer [] ids);
//xml映射文件
<select id="selectByIds" resultMap="BaseResultMap">
select
*
from user where id in
<foreach item="item" index="index" collection="array" open="(" separator="," close=")">
#{item}
</foreach>
</select>
//接口方法
ArrayList<User> selectByIds(List<Integer> ids);
//xml映射文件
<select id="selectByIds" resultMap="BaseResultMap">
Select
<include refid="Base_Column_List" />
from jria where ID in
<foreach item="item" index="index" collection="list" open="(" separator="," close=")">
#{item}
</foreach>
</select>
标签:array list pen https param 推荐 ref collect type
原文地址:http://blog.51cto.com/13523664/2060417