ibatis 返回结果集总结

object

别名映射->实体类：resultClass

<select id=" selectAll" resultClass="AppLog">     select       ID as id,       TYPE as type,       DESCR as descr     from APP_LOG     where ID = #id# </select>

List list = sqlMapper.queryForList("selectAll"); for (int i = 0; i < list.size(); i ) {     AppLog log = (AppLog) list.get(i);    //add your code here; }

别名映射->Map类：resultClass

<select id=" selectAll" resultClass="java.util.HashMap">     select       ID as id,       TYPE as type,       DESCR as descr     from APP_LOG     where ID = #id# </select>

List list = sqlMapper.queryForList("selectAll"); for (int i = 0; i < list.size(); i ) {     Map map = (Map) list.get(i);     String id = (String) map.get("id");     String type = (String) map.get("type");     String descr = (String) map.get("descr");    //add your code here; }

显式映射->实体类：resultMap

<resultMap id="AppLogResult" class="AppLog">     <result property="id" column="ID"/>     <result property="type" column="Type"/>     <result property="descr" column="DESCR"/>    </resultMap> <select id="selectAll" resultMap="AppLogResult">     select * from APP_LOG </select>

List list = sqlMapper.queryForList("selectAll"); for (int i = 0; i < list.size(); i ) {     AppLog log = (AppLog) list.get(i);    //add your code here; }

显式映射->Map类：resultMap

<resultMap id="map-result" class="java.util.HashMap">        <result property="id" column="ID"/>     <result property="type" column="Type"/>     <result property="descr" column="DESCR"/>     </resultMap> <select id="selectAll2" resultMap="map-result">     select * from APP_LOG </select>

List list = sqlMapper.queryForList("selectAll2");        for (int i = 0; i < list.size(); i ) {            Map map = (Map) list.get(i);            String id = (String) map.get("id");            String type = (String) map.get("type");            String descr = (String) map.get("descr");               }

无映射

<select id="selectAll3" resultClass="java.util.HashMap">     select * from APP_LOG </select>

List list = sqlMapper.queryForList("selectAll3"); for (int i = 0; i < list.size(); i ) {     Map map = (Map) list.get(i);     String id = (String) map.get("ID");     String type = (String) map.get("TYPE");     String descr = (String) map.get("DESCR"); }

xml

xml

<select id="selectxml" parameterClass="java.lang.String" resultClass="xml" xmlResultName="log">     select       ID as id,       TYPE as type,       DESCR as descr     from APP_LOG     where ID = #id# </select>

String o=(String) sqlMapper.queryForObject("selectxml", id); System.out.println(o);