传入mybatis的xml为Long型时报There is no getter for property named 'XXX' in 'class java.lang.

<select id="getGroupId" parameterType="java.lang.Long" resultType="com.capinfo.weibo.system.entity.ColumnGroup">
    SELECT * from common_columngroup c
    <where>
        <if test="accountId!=null">
            c.accountId=#{parameter} and c.type=2
       </if>
    </where>   
</select>

<select id="getGroupId" parameterType="java.lang.Long" resultType="com.capinfo.weibo.system.entity.ColumnGroup">
    SELECT * from common_columngroup c
    <where>
        <if test="accountId!=null">
            c.accountId=#{_parameter} and c.type=2
       </if>
    </where>   
</select>