前后台数据交互没有问题,但是前台页面上显示不出正确的表格,数据库表是我自己建的表 10
这是前台页面上显示出来的,光有表不显示数据这是数据库中的表我可以确定前后台数据交互没有问题,因为在前台进行添加操作数据库中确实增加了数据以上是大致的jsp代码...
这是前台页面上显示出来的,光有表不显示数据
这是数据库中的表
我可以确定前后台数据交互没有问题,因为在前台进行添加操作数据库中确实增加了数据
以上是大致的jsp代码 展开
这是数据库中的表
我可以确定前后台数据交互没有问题,因为在前台进行添加操作数据库中确实增加了数据
以上是大致的jsp代码 展开
1个回答
2015-03-25
展开全部
代码如下:
index.php
<?php
ob_start();
session_start();
require_once("config.php");
?>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<link href="style.css" rel="stylesheet" type="text/css" />
<title>简单投票系统</title>
<style type="text/css">
/*全局样式*/
body { font-family: "宋体"; font-size: 12pt; color: #333333; margin-top: 0px; margin-right:
0px; margin-bottom: 0px; margin-left: 0px;background-image: url(images/Zlppy_Bg.jpg);}
table { font-family: "宋体"; font-size: 9pt; line-height: 20px; color: #333333}
a:link { font-size: 9pt; color: #333333; text-decoration: none}
a:visited { font-size: 9pt; color: #333333; text-decoration: none}
a:hover { font-size: 9pt; color: #E7005C; text-decoration: underline}
a:active { font-size: 9pt; color: #333333; text-decoration: none}
/*全局样式结束*/
</style>
<script language="javascript">
function check()
{
node=frm.itm;
flag=false;
for(i=0;i<node.length;i++)
{
if(node[i].checked)
{
flag=true;
}
}
if(!flag)
{
alert("您没有选择")
return false;
}
return true;
}
</script>
<?php
if($_POST["submit"]){
if($_SESSION["vote"]==session_id())
{
?>
<script language="javascript">
alert("您已经投票了");
location.href="index.php";
</script>
<?php
exit();
}
$id=$_POST["itm"];
$sql="update vote set count=count+1 where id=$id";
if(mysql_query($sql))
{
$_SESSION["vote"]=session_id();
?>
<script language="javascript">alert("投票成功,点确定查看结
果");location.href="index.php?id=ck";</script>
<?php
}
else
{
?>
<script language="javascript">alert("投票失败");location.href="index.php";</script>
<?php
}
}
?>
</head>
<body>
<form name="frm" action="" method="post" onsubmit=return(check()) style="margin-
bottom:5px;">
<table width="365" border="0" align="center" cellpadding="12" cellspacing="1"
bgcolor="pink">
<tr>
<th bgcolor="#FFFFCC">
<?php
$sql="select * from votetitle";
$rs=mysql_query($sql);
$row=mysql_fetch_assoc($rs);
echo $row["votetitle"];
?> </th>
</tr>
<?php
$sql="select * from vote";
$rs=mysql_query($sql);
while($rows=mysql_fetch_assoc($rs))
{
?>
<tr>
<td bgcolor="#FFFFFF"><input type="radio" name="itm" value="<?php echo $rows
["id"]?>" /> <?php echo $rows["item"]?></td>
</tr>
<?php
}
?>
<tr>
<td align="center" bgcolor="#FFFFFF"><input type="submit" name="submit" value="投票
"/>
<input type="button" value="查看结果" onClick="location.href='index.php?id=ck'"
/></td>
</tr>
</table>
</form>
<?php if($_GET["id"]=="ck"){?>
<?php
$sql="select sum(count) as 'total' from vote";
$rs=mysql_query($sql);
$rows=mysql_fetch_assoc($rs);
$sum=$rows["total"]; //得出总票数
$sql="select * from vote";
$rs=mysql_query($sql);
?>
<table width="365" border="0" align="center" cellpadding="5" cellspacing="1"
bgcolor="#C2C2C2">
<tr>
<th bgcolor="#FFFFFF">项目</th>
<th bgcolor="#FFFFFF">票数</th>
<th bgcolor="#FFFFFF">百分比</th>
</tr>
<?php
while($rows=mysql_fetch_assoc($rs))
{
?>
<tr>
<td bgcolor="#FFFFFF"><?php echo $rows["item"]?></td>
<td bgcolor="#FFFFFF"><?php echo $rows["count"]?></td>
<td bgcolor="#FFFFFF">
<?php
$per=$rows["count"]/$sum;
$per=number_format($per,4);
?>
<img src="100.jpg" height="4" width="<?php echo $per*100?>" />
<?php echo $per*100?>% </td>
</tr>
<?php
}
?>
</table>
<div align="center">
<a href="index.php">隐藏结果</a>
</div>
<?php } ?>
</body>
</html>
admin.php
<?php
require_once("config.php");
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<link href="../style.css" rel="stylesheet" type="text/css" />
<title>简单投票系统</title>
<style type="text/css">
/*全局样式*/
body { font-family: "宋体"; font-size: 12pt; color: #333333; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px;background-image: url(images/Zlppy_Bg.jpg);}
table { font-family: "宋体"; font-size: 9pt; line-height: 20px; color: #333333}
/*全局样式结束*/
</style>
<script language="javascript">
function selectAll()
{
node=window.document.frm.itm;
for(i=0;i<node.length;i++)
{
node[i].checked=true;
}
}
function cancelAll()
{
node=frm.itm;
for(i=0;i<node.length;i++)
{
node[i].checked=false;
}
}
function del()
{
node=frm.itm;
id="";
for(i=0;i<node.length;i++)
{
if(node[i].checked)
{
if(id=="")
{
id=node[i].value
}
else
{
id=id+","+node[i].value
}
}
}
if(id=="")
{
alert("您没有选择删除项");
}
else
{
location.href="?type=del&id="+id
}
}
</script>
</head>
<body>
<?php
if($_POST["Submit"])
{
$title=$_POST["title"];
$sql="update votetitle set votetitle='$title'";
mysql_query($sql);
?>
<script language="javascript">
alert("修改成功");
</script>
<?php
}
if($_POST["Submit2"])
{
$newitem=$_POST["newitem"];
$sql="insert into vote (titleid,item,count) values (1,'$newitem',1)";
mysql_query($sql);
}
?>
<form id="frm" name="frm" method="post" action="" style="margin-bottom:3px;">
<table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">
<tr>
<td colspan="4" bgcolor="#FFFFFF"><label>
<?php
$sql="select * from votetitle";
$rs=mysql_query($sql);
$rows=mysql_fetch_assoc($rs);
?>
<input name="title" type="text" id="title" size="35" value="<?php echo $rows["votetitle"]?>" />
</label></td>
<td width="68" align="center" bgcolor="#FFFFFF"><label>
<input type="submit" name="Submit" value="修改标题" />
</label></td>
</tr>
<tr>
<th width="30" bgcolor="#FFFFFF">编号</th>
<th width="45" bgcolor="#FFFFFF">项目</th>
<th width="52" bgcolor="#FFFFFF">票数</th>
<th width="50" align="center" bgcolor="#FFFFFF">修改</th>
<th align="center" bgcolor="#FFFFFF">删除</th>
</tr>
<?php
$sql="select * from vote order by count desc";
$rs=mysql_query($sql);
while($rows=mysql_fetch_assoc($rs))
{
?>
<tr>
<td align="center" bgcolor="#FFFFFF"><input type="checkbox" name="itm" value="<?php echo $rows["id"]?>" /><?php echo $rows["id"]?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["item"]?></td>
<td align="center" bgcolor="#FFFFFF"><?php echo $rows["count"]?></td>
<td align="center" bgcolor="#FFFFFF"><input type="button" value="修改" onclick="location.href='?type=modify&id=<?php echo $rows["id"]?>'" /></td>
<td align="center" bgcolor="#FFFFFF"><input type="button" value="删除" onclick="location.href='?type=del&id=<?php echo $rows["id"]?>'" /></td>
</tr>
<?php
}
?>
<tr>
<td colspan="5" align="center" bgcolor="#FFFFFF">
<input type="button" value="选择全部" onclick="selectAll()" />
<input type="button" value="取消全部" onclick="cancelAll()" />
<input type="button" value="删除所选" onclick="del()" /> </td>
</tr>
<tr>
<td colspan="3" bgcolor="#FFFFFF"><label>
<input name="newitem" type="text" id="newitem" />
</label></td>
<td colspan="2" bgcolor="#FFFFFF"><label>
<input type="submit" name="Submit2" value="添加新项" />
</label></td>
</tr>
</table>
</form>
<?php
if($_GET["type"]=="modify"){
$id=$_GET["id"];
if($_POST["Submit3"])
{
$item=$_POST["itm"];
$count=$_POST["count"];
$sql="update vote set item='$item',count=$count where id=$id";
mysql_query($sql);
echo "<script language=javascript>alert('修改成功!');window.location='admin.php'</script>";
}
$sql="select * from vote where id=$id";
$rs=mysql_query($sql);
$rows=mysql_fetch_assoc($rs);
?>
<form id="form1" name="form1" method="post" action="" style="margin-top:2px;">
<table width="365" border="0" align="center" cellpadding="5" cellspacing="1" bgcolor="#C2C2C2">
<tr>
<th colspan="2" bgcolor="#FFFFFF">修改投票项目</th>
</tr>
<tr>
<td align="center" bgcolor="#FFFFFF">名称:</td>
<td bgcolor="#FFFFFF"><label>
<input name="itm" type="text" id="itm" value="<?php echo $rows["item"]?>" />
</label></td>
</tr>
<tr>
<td align="center" bgcolor="#FFFFFF">票数:</td>
<td bgcolor="#FFFFFF"><label>
<input name="count" type="text" id="count" value="<?php echo $rows["count"]?>" />
</label></td>
</tr>
<tr>
<td colspan="2" align="center" bgcolor="#FFFFFF"><label>
<input type="submit" name="Submit3" value="修改" />
<input type="reset" name="Submit" value="重置" />
</label></td>
</tr>
</table>
</form>
<?php
}
?>
<?php
if($_GET["type"]=="del"){
$id=$_GET["id"];
$sql="delete from vote where id in ($id)";
mysql_query($sql);
echo "<script language=javascript>alert('删除成功!');window.location='admin.php'</script>";
}
?>
</body>
</html>
config.php
<?php
$conn=@mysql_connect("localhost","root","");
if($conn==null)
die("数据库连接失败");
mysql_query("set names 'gb2312'");
if(!mysql_select_db("vote"))
{
die("数据库连接失败");
}
?>
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