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1. 使用forward-only的resultset，rs.next()移動記錄集就能夠了
選從50-100行
int CurrentRow = 1;
int MinRow = 50;
int MaxRow = 100;
while(rs.next())
{
if (CurrentRow<MinRow)
{
CurrentRow++;
continue;
}
}
2.使用可滾動記錄集的遊標進行分頁，用abslout(int row)定位
Connection cn = 。。。;
stmt = cn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
這樣就能夠使用rs.absolute(pos)進行定位了
3.使用SQL語句－通用
select top 50 *
from (select top 100 * from tablex order by id desc) as a
order by id
Oracle的語句:
select * from (select rownum r ,* from test) tt
where tt.r > 50 and tt.r <= 100;
DB2中：
select * from payment fetch first 5 row only --查前5條記錄
4.使用ibatis,hibernate等，分頁已內部實現了，配置一下就能夠了
1）hibernate
Query q = session.createQuery("from Cat as c");
q.setFirstResult(50);
q.setMaxResults(100);
List l = q.list();
那麼Hibernate底層如何實現分頁的呢？實際上Hibernate的查詢定義在net.sf.hibernate.loader.Loader這個類裏面，仔細閱讀該類代碼，就能夠把問題完全搞清楚。
Hibernate2.0.3的Loader源代碼第480行以下：
if (useLimit) sql = dialect.getLimitString(sql);
PreparedStatement st = session.getBatcher().prepareQueryStatement(sql, scrollable);
假如相應的數據庫定義了限定查詢記錄的sql語句，那麼直接使用特定數據庫的sql語句。
然後來看net.sf.hibernate.dialect.MySQLDialect:
public boolean supportsLimit() {
return true;
}
public String getLimitString(String sql) {
StringBuffer pagingSelect = new StringBuffer(100);
pagingSelect.append(sql);
pagingSelect.append(" limit ?, ?");
return pagingSelect.toString();
}
這是MySQL的專用分頁語句，再來看net.sf.hibernate.dialect.Oracle9Dialect:
public boolean supportsLimit() {
return true;
}
public String getLimitString(String sql) {
StringBuffer pagingSelect = new StringBuffer(100);
pagingSelect.append("select * from ( select row_.*, rownum rownum_ from ( ");
pagingSelect.append(sql);
pagingSelect.append(" ) row_ where rownum <= ?) where rownum_ > ?");
return pagingSelect.toString();
}
Oracle採用嵌套3層的查詢語句結合rownum來實現分頁，這在Oracle上是最快的方式，假如只是一層或兩層的查詢語句的rownum不能支持order by。
2）ibatis
PaginatedList list =sqlMap.queryForPaginatedList ("getProductList”, null, 10);
list.nextPage();
list.previousPage();
5.使用The Pager Tag Library
到http://jsptags.com/tags/navigation/pager/下載pager-taglib-2.0.war包，解壓後可獲得pager-taglib.jar，將其放到web-inf/lib/包下
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