Mybatis之foreach遍历Map

方式一：利用map的entrySet()方法

 <insert id="XXX" parameterType="java.util.Map">
    INSERT INTO table(a, b)
    VALUES
    <foreach collection="param.entrySet()" open="(" separator="," close=")" index="key" item="val">
        #{key}, #{val}
    </foreach>
  </insert>
</mapper>

方式二：

<insert id="XXX" parameterType="java.util.Map">
    INSERT INTO table
    <foreach collection="params.keys" item="key" open="(" separator="," close=")">
        获取值：#{param[key]}
        键：#{key}
    </foreach>
    VALUES
    <foreach collection="param.value" item="val" open="(" separator="," close=")">
       值：#{val}
    </foreach>
  </insert>

转载地址：https://blog.csdn.net/qq_37014990/article/details/79775906