岗位详细地址查询为null时设置为空字符串

src/main/java/com/jeeplus/modules/hpposition/mapper/xml/HpPositionAddressMapper.xml

@@ -22,7 +22,7 @@
 		a.city_id AS "cityId",
 		a.country_id AS "countryId",
 		a.adname as "adname",
-		a.address AS "address",
+		ifnull(a.address,"") AS "address",
 		a.is_this_area_publish AS "isThisAreaPublish"
 	</sql>