ibatis各种返回数据集

转自：http://lianghyan.bokee.com/viewdiary.25478129.html

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);