初学jsp心得(2)

分类: Jsp   出处:iocblog整理  更新时间:2008-08-31   添加到收藏  

7。在jsp中实现分页。
page是关键字,不能当变量。
conn.jsp
<%
  string sdbdriver = "com.ibm.db2.jdbc.app.db2driver";
  string sconnstr = "jdbc:db2:faq";
  connection conn = null;
  statement stmt = null;
  resultset rs=null;  
    try {
        class.forname(sdbdriver);   
  }
    catch(java.lang.classnotfoundexception e)   {
    out.print("faq(): " + e.getmessage());
  }
   
  try{
    conn = drivermanager.getconnection(sconnstr,"wsdemo","wsdemo1");     
    stmt = conn.createstatement();
  }catch(sqlexception e){
    out.print(e.tostring());
  }
%>

query.jsp

<%@ page language="java" import="java.sql.*" %> [来源www.iocblog.net]
<%@ page contenttype="text/html; charset=gb2312" %>
<%@ include file="conn.jsp" %>
<%
.......
int pages=0;
int pagesize=10;
resultset result = null;
resultset rcount = null;

pages = new integer(request.getparameter("pages")).intvalue();

if (pages>0)
{

string sql=" state='我不傻'";
int count=0;
try {
rcount = stmt.executequery("select count(id) as id from user where "+sql);
catch(sqlexception ex) {
out.print("aq.executequery: " + ex.getmessage());
}
if(rcount.next())
count = rcount.getint("id");
rcount.close();

if (count>0)
{  
sql="select * from user where "+sql;
try {
result = stmt.executequery(sql);
  }  
catch(sqlexception ex) {
out.print("aq.executequery: " + ex.getmessage());
}

int i;
string name;
// result.first();
// result.absolute((pages-1)*pagesize);
// 此方法jdbc2.0支持。编译通过,但执行不过,不知是不是跟驱动有关,只好用下面的笨办法。
for(i=1;i<=(pages-1)*pagesize;i++)
result.next();
for(i=1;i<=pagesize;i++) {
if (result.next()) {
name=result.getstring("name");
out.print(name);
}
result.close();
int n= (int)(count/pagesize);
if (n*pagesize<count) n++;
if (n>1)
{
for(i=1;i<=n;i++)
  out.print("<a href=query.jsp?pages="+i+">"+i+"&nbsp;</a>");
}
}
}
%>
        

[来源www.iocblog.net]

上一页 [1] [2]



文章整理:iocblog
版权申明:本站文章均来自网络,如有侵权,请联系我们,我们收到后立即删除,谢谢!
特别注意:本站所有转载文章言论不代表本站观点,本站所提供的摄影照片,插画,设计作品,如需使用,请与原作者联系,版权归原作者所有。