Question

帮忙看下mybatis查出的数据为什么是一条

Answer 1

<resultMap id="articleResultMap" type="Article">
<id property="id" column="id" />
<result property="title" column="title" />
<result property="content" column="content" />
</resultMap>

<resultMap id="articleResultMap" type="Article">
<id property="id" column="id" />
<result property="username" column="userName" />
<result property="useraddress" column="userAddress" />
<collection property="articles" column="ID" javaType="ArrayList" ofType="java.lang.Object" select="select-articles-user" />
</resultMap>