如何在MyBatis中获取数组

Question

this is array:

String[] user_login_array={user_email,user_password};

this is mybatis.xml :

<select id="getUser" parameterType="String"resultType="post.User">
     select * from users where user_email=#{user_email} and user_password=#{user_password}
</select>

How to add array's parameters to this SQL?

Answer 1

This is something which I got first into mind. Please see the below logic, where you are actually looping over the array and using multiple AND and OR to tackle the query. This may not be the perfect query for you but hope this will give you some insights to the actual solution.

<select id="getUser" parameterType="String"resultType="post.User"> 
select * from users where    
          <foreach item="item" collection="user_login_map.entrySet()" separator="OR">
        (user_email=#{item.key} AND user_password=#{item.value})
        </foreach>
</select>