方案1 需要配置jar包:json-lib-2.3-jdk15.jar, struts.xml不需要配置json result. Action不支持return返回结果. 返回JSON方式:response.getWriter().write("xxxx"); struts.xml配置案列

使用案例 String queryStr = "select new Map(c.id as id,c.name as name,c.pycode as pycode,c.postcode as postcode," + "c.areacode as areacode,c.sProvince.name as pname) from City c where c.sProvince.nam

create or replace procedure province_test(pro_name in varchar,pro_count out int) is begin select count(id) into pro_count from s_city where pid=(select id from s_province where name=pro_name); end