mybatis遍历Map

<insert id="insert" parameterType="com.modular.table.param.CustomDataParam">
        insert into ${param.tableName}
        <foreach collection="param.params.keys" item="key" open="(" close=")"
                 separator=",">
            ${key}
        </foreach>
        values
        <foreach collection="param.params.values" item="value" open="("
                 close=")" separator=",">
            #{value}
        </foreach>
</insert>

<update id="update" parameterType="com.modular.table.param.CustomDataParam">
        update ${param.tableName} set
        <foreach collection="param.params.entrySet()" item="value" index="key"         
                                                                       separator=",">
            ${key} = #{value}
        </foreach>
        where id
        <if test="param.id != null">
            = #{param.id}
        </if>
        <if test="param.id == null">
            in
            <foreach collection="param.ids" item="item" index="index" open="(" close=")" 
                                                                        separator=",">
                #{item}
            </foreach>
        </if>
</update>
<delete id="deleteBatchIds"  
            parameterType="com.modular.table.param.CustomDataParam">
        delete from ${param.tableName} where id in
        <foreach collection="param.ids" item="id" index="index" open="(" close=")" separator=",">
            #{id}
        </foreach>
</delete>
<select id="selectById" resultType="java.util.Map">
        select * from ${param.tableName} where id = #{param.id}
    </select>
    <select id="selectCount" resultType="java.lang.Integer" 
          parameterType="com.modular.table.param.CustomDataParam">
        select count(1) from ${param.tableName} ${param.where}
</select>
<select id="selectList" resultType="java.util.Map" 
         parameterType="com.modular.table.param.CustomDataParam">
        select * from ${param.tableName} ${param.where}
</select>
<select id="selectListBySql" resultType="java.util.Map" parameterType="string">
        select * from ${query}
</select>

param.params.entrySet(),此处entrySet必须有括号! item="value" index="key"  ,不能用item="entry",然后再entry.key,entry.value!!!!!!!!!

之前使用mybatis时候不用param.属性啊,这次不知道为什么必须使用param.属性,直接写属性就报Parameter '**' not found. Available parameters are [0, 1, param1, param2],请大神指点!!!!!!