在ORACLE 大数据量下的分页解决方法。一般用截取ID 方法,还有是三层 嵌套方法
时间:2019-01-05 21:23 来源:未知 作者:IT
答:一种分页方法
<%
int i=1;
int numPages=14;
String pages = request.getParameter(“page”) ;
int currentPage = 1;
currentPage = (pages==null)?(1):{Integer.parseInt(pages)}
sql = “select count(*) from tables”;
ResultSet rs = DBLink.executeQuery(sql) ;
第36 页共59 页
while(rs.next()) i = rs.getInt(1) ;
int intPageCount=1;
intPageCount=(i%numPages==0)?(i/numPages):(i/numPages+1);
int nextPage ;
int upPage;
nextPage = currentPage+1;
if (nextPage>=intPageCount) nextPage=intPageCount;
upPage = currentPage-1;
if (upPage<=1) upPage=1;
rs.close();
sql=”select * from tables”;
rs=DBLink.executeQuery(sql);
i=0;
while((i<numPages*(currentPage-1))&&rs.next()){i++;}
%>
//输出内容
//输出翻页连接
合计:<%=currentPage%>/<%=intPageCount%>页
<a href=”List.jsp?page=1″>第一页</a>
<a href=”List.jsp?page=<%=upPage%>”>上一页</a>
<%
for(int j=1;j<=intPageCount;j++){
if(currentPage!=j){
%>
<a href=”list.jsp?page=<%=j%>”>[<%=j%>]</a>
<%
}else{
out.println(j);
}
}
%>
<a href=”List.jsp?page=<%=nextPage%>”>下一页</a>
<a href=”List.jsp?page=<%=intPageCount%>”>最后页</a> (责任编辑:IT)
答:一种分页方法 <% int i=1; int numPages=14; String pages = request.getParameter(“page”) ; int currentPage = 1; currentPage = (pages==null)?(1):{Integer.parseInt(pages)} sql = “select count(*) from tables”; ResultSet rs = DBLink.executeQuery(sql) ; 第36 页共59 页 while(rs.next()) i = rs.getInt(1) ; int intPageCount=1; intPageCount=(i%numPages==0)?(i/numPages):(i/numPages+1); int nextPage ; int upPage; nextPage = currentPage+1; if (nextPage>=intPageCount) nextPage=intPageCount; upPage = currentPage-1; if (upPage<=1) upPage=1; rs.close(); sql=”select * from tables”; rs=DBLink.executeQuery(sql); i=0; while((i<numPages*(currentPage-1))&&rs.next()){i++;} %> //输出内容 //输出翻页连接 合计:<%=currentPage%>/<%=intPageCount%>页 <a href=”List.jsp?page=1″>第一页</a> <a href=”List.jsp?page=<%=upPage%>”>上一页</a> <% for(int j=1;j<=intPageCount;j++){ if(currentPage!=j){ %> <a href=”list.jsp?page=<%=j%>”>[<%=j%>]</a> <% }else{ out.println(j); } } %> <a href=”List.jsp?page=<%=nextPage%>”>下一页</a> <a href=”List.jsp?page=<%=intPageCount%>”>最后页</a> (责任编辑:IT) |