jsp + oracle翻页

今天写了个利用oracle sql在jsp页面进行分页。具体实现核心代码如下：

// 声明分页变量并初始化
// 当前页码值,最小索引值:1
int pageNo = 1 ;
// 每页面显示的资讯条数(行数)
int row = 10 ;
// 最大显示页数
int MAX_PAGE_NUM = 20 ;
// 最大每页显示条数
int MAX_ROWCOUNT = 20 ;

// 从请求中获取分页变量的值
StringreqNo = request.getParameter( " pageNo " );
StringreqRow = request.getParameter( " row " );
if ( ! StringUtils.isEmpty(reqNo) && NumberUtils.isNumber(reqNo) && Integer.parseInt(reqNo) > 1 ) ... {
//分页数不超过MAX_PAGE_NUM页，若需要超过MAX_PAGE_NUM页，则修改MAX_PAGE_NUM
if(Integer.parseInt(reqNo)<=MAX_PAGE_NUM)
pageNo=Integer.parseInt(reqNo);
else
pageNo=MAX_PAGE_NUM;
}
if ( ! StringUtils.isEmpty(reqRow) && NumberUtils.isNumber(reqRow) && Integer.parseInt(reqRow) > 1 ) ... {
//每页显示的条目在MAX_ROWCOUNT行以内,若需要超过MAX_ROWCOUNT行，则修改MAX_ROWCOUNT
if(Integer.parseInt(reqRow)<=MAX_ROWCOUNT)
row=Integer.parseInt(reqRow);
else
row=MAX_ROWCOUNT;
}

int startNum = (pageNo - 1 ) * row;

以上代码嵌入在jsp页面里，然后sql语句如下：

Listlist = service.executeQuery(" select kpj,spj,zd from ( select kpj,spj,zd,ROWNUMR from gazx.qhhq where pz like ' %"+param+"% ' and " +
"zhxgrq = ( select max (zhxgrq) from gazx.qhhq) and scbz = 0 and gkbz = 1 and rownum <= " + (startNum + row) + ") where R > " + startNum + "");

接下来进行分页联接：

// 处理分页链接
if (pageNo < MAX_PAGE_NUM)
out.println( " <ahref='qhList.jsp? " + paras + " &amp;pageNo= " + (pageNo + 1 ) + " &amp;row= " + row + " '>下页</a>&nbsp; " );
if (pageNo > 1 )
out.println( " <ahref='qhList.jsp? " + paras + " &amp;pageNo= " + (pageNo - 1 ) + " &amp;row= " + row + " '>上页</a>&nbsp; " );
out.println( " <ahref='qhList.jsp? " + paras + " &amp;pageNo=1&amp;row= " + row + " '>首页</a>&nbsp; " );
out.println( " <ahref='qhList.jsp? " + paras + " &amp;pageNo= " + MAX_PAGE_NUM + " &amp;row= " + row + " '>末页</a><br/> " );
out.println( " 第 " + pageNo + " / " + MAX_PAGE_NUM + " 页<br/> " );