where-if中if不能识别大写AND，OR

mybatis报错:Caused by: org.apache.ibatis.ognl.ParseException: Encountered " <IDENT> "AND "" at line 1

报错代码：

`<select id="countByMapRt" resultType="java.lang.Long">
    SELECT COUNT(1) FROM epc_letter_notice t1
    <where>
        t1.is_delete = 0
        <if test="countryArea != null AND countryArea != ''">
            AND t1.share_place LIKE concat('%',#{countryArea},'%')
        </if>
    </where>
</select>`

产生错误的原因是if条件中AND为大写，应改为小写。大写不能识别

`<select id="countByMapRt" resultType="java.lang.Long">
    SELECT COUNT(1) FROM epc_letter_notice t1
    <where>
        t1.is_delete = 0
        <if test="countryArea != null and countryArea != ''">
            AND t1.share_place LIKE concat('%',#{countryArea},'%')
        </if>
    </where>
</select>`