浠ュ墠鍒嗛〉涔犳儻鐢ㄨ繖鏍風殑SQL璇彞:
select * from
(select t.*,rownum row_num from mytable t order by t.id) b
where b.row_num between 1 and 10
緇撴灉鍙戠幇鐢變簬璇ヨ鍙ヤ細鍏堢敓鎴恟ownum 鍚庢墽琛宱rder by 瀛愬彞,鍥犺屾帓搴忕粨鏋滄牴鏈笉瀵?鍚庢潵鍦℅OOGLE涓婃悳鍒?A target=blank>涓綃囨枃绔?/FONT>,鍘熸潵澶氬涓灞俿elect 灝辮兘寰堝ソ鐨勮В鍐寵闂,鐗規璁板綍,璇彞濡備笅:
select * from
(select a.*,rownum row_num from
(select * from mytable t order by t.id desc) a
) b where b.row_num between 1 and 10
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1錛屽湪榪滅▼Home鎺ュ彛涓姞涓嬮潰涓や釜鏂規硶:
public interface MyTableHome extends EJBHome
{
// public Collection findByPage(String strCond,int rownumbegin,int rownumend) throws RemoteException, FinderException; public int getCount(String strCond) throws RemoteException;
}2錛屽湪BMP涓篃鍔犵浉搴旂殑鏂規硶:
public class MyTableBeanBMP extends MyTableBean{ // public Collection ejbFindByPage(String strCond,int rownumbegin,int rownumend) 
{ Connection connection = null; PreparedStatement statement = null; try { connection = dataSource.getConnection(); statement = connection.prepareStatement("SELECT ID from (select t.*, rownum row_num from MYTABLE t "+strCond+") a where a.row_num between "+rownumbegin+" and "+rownumend+""); ResultSet resultSet = statement.executeQuery(); Vector keys = new Vector(); while (resultSet.next()) { String cCode = resultSet.getString(1); keys.addElement(cCode);
} return keys; } catch(SQLException e) { throw new EJBException("Error executing SQL SELECT ID from (select t.*, rownum row_num from MYTABLE t "+strCond+") a where a.row_num between "+rownumbegin+" and "+rownumend+" : " + e.toString()); } finally { closeConnection(connection, statement); } } public int ejbHomeGetCount(String strCond) { Connection connection = null; PreparedStatement statement = null; try { connection = dataSource.getConnection(); statement = connection.prepareStatement("SELECT count(*) from MYTABLE "+strCond); ResultSet resultSet = statement.executeQuery(); int count = 1; while (resultSet.next()) { count = resultSet.getInt(1); } return count; } catch(SQLException e) { throw new EJBException("Error executing SELECT count(*) from MYTABLE "+strCond+" : " + e.toString()); } finally { closeConnection(connection, statement); } }}3.璋冪敤:
int maxrowinpage = 15;//姣忛〉鏄劇ず15鏉¤褰?/SPAN>int Page = 1;int rowcount = 0; int maxpage = 0; int rownumbegin =1; int rownumend =maxrowinpage; String strCond =" "; //鏌ヨ鏉′歡Context context = new InitialContext(); Object ref = context.lookup("MyTable"); MyTableHome home = (MyTableHome) ref; rowcount = home.getCount(strCond); maxpage = (rowcount + maxrowinpage - 1) / maxrowinpage; rownumbegin = (Page-1)*maxrowinpage+1; rownumend = Page*maxrowinpage; Collection c = home.findByPage(strCond,rownumbegin,rownumend);
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