-批量更新入参Map
void updateByItemCode(@Param("hashMap") HashMap<String, String> hashMap);
<update id="updateByItemCode" parameterType="java.util.Map">
<foreach collection="hashMap.entrySet()" index="key" item="value" separator=";">
update j_fin_billitem set
<if test="value != null">
item_name = #{value}
</if>
where item_code = #{key}
</foreach>
</update>
