标签：php javascript html 上传pdf 浏览pdf
在寒假简单制作PHP网站时，需要实现在线浏览PDF和上传PDF的简单功能，下面就简单介绍下该功能。实现效果如下图所示：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">
/* 这个链接改变颜色 */
a.one:link {color: #0000ff}
a.one:visited {color: #0000ff}
a.one:hover {color: #ffcc00}
</style>
</head>
<script language="JavaScript">
function change(el) {
whichEl = document.getElementById(el) //获得指定ID值的对象
if (whichEl.style.display == 'none') { //block是默认值为显示,none为隐藏
whichEl.style.display = 'block';
} else {
whichEl.style.display = 'none';
}
return;
}
</script>
<body>
<TABLE cellSpacing=0 cellPadding=2 width="95%" align=center border=0>
<TR>
<TD align=left width=120 style="COLOR: #880000;font-weight:bold;">
<a href="#" class="one" onclick=change("operate")> 上传课件 </a></TD></TR>
</TABLE>
<form action="upload.php" method="post" enctype="multipart/form-data">
<TABLE id="operate" cellSpacing=0 cellPadding=0 width="80%" align=right border=0 style="DISPLAY: none">
<tr>
<td colspan="3"><hr width="90%" size="1" color="#FF0000"></td>
</tr>
<TR>
<td width="80"><div align="right">课程编号: </div></td>
<td><?php echo $_SESSION['courseid']; ?></td>
<td></td>
</TR>
<TR>
<td width="120"><div align="right">课件名称: </div></td>
<td width="250"><input type="text" name="kjname" id="kjname" value="" style=width:165pt; maxlength="50"/></td>
<td></td>
</TR>
<TR>
<td ><div align="right">上传课件: </div></td>
<td><input type="file" name="myfile" value="" style='font-size:16px'/>（*小于2M）</td>
</TR>
<TR height=4>
<TD colspan="3"></TD>
</TR>
<tr>
<td colspan="3"><hr width="90%" size="1" color="#FF0000"></td>
</tr>
<tr>
<td colspan="3" align="middle"><div align="middle">
<input type="submit" style='font-size:22px' name="submit" value="确认上传"/>
</div></td>
</tr>
</TABLE>
</form>
</body>
</html> 其中核心代码是通过<script language="JavaScript">..</script>定义JavaScript函数，设置style.display属性none隐藏、block显示；同时在超链接中调用该函数实现如上图所示的效果。代码如下：
<TABLE cellSpacing=0 cellPadding=2 width="90%" align=right border=0>
<?php
//获取课件信息
$hgi=new HttpPostInf();
$result=$hgi->doquery('2',"select * from Courseware_PDF where CP_Cid='".$cid."';");
$dj=json_decode($result,true);
$jcount=count($dj);
for($i=0; $i<$jcount; $i++){
?>
<TR height=10>
<TD></TD></TR>
<TR>
<TD width=40><IMG src="../images/pdf-24.png"></TD>
<TD>
<A href="main_right3-3-content.php?id=<?php echo $dj[$i]['CP_PDFurl'] ?>"
class="one" target="rightFrame"><?php echo $dj[$i]['CP_Cwname'];?></A>
</TD>
<TD></TD>
</TR>
<?php
}
?>
<TR height=20><TD></TD></TR>
</TABLE> 其中里面嵌套的PHP代码是连接数据库里面的数据，其中数据库是通过新浪SAE搭建的，PDF存储的是URL，你既可以连接本地的地址也可连接云盘上的地址。如下图所示：
<?php
header("Content-Type: text/html; charset=utf-8");
class HttpPostInf{
function __construct(){ //无参构造函数
}
function doquery($type , $sql){ //网路通信函数
$data = array ('sqlType' => $type , 'sqlExe' => $sql);
$data = http_build_query($data);
$opts = array ('http' => array ('method' => 'POST','header'=> "Content-type: application/x-www-form-urlencoded\r\n" ."Content-Length: " . strlen($data) . "\r\n",'content' => $data));
$context = stream_context_create($opts);
$html = file_get_contents('http://courseweb.sinaapp.com/courseweb.php', false, $context);
return $html;
}
}
?> 通过下面代码即可实现跳转到main_right3-3-content.php显示相应php，而传递的id参数整数你点击的PDF超链接对应的数据库课件URL地址。<?php
header("Content-Type: text/html; charset=utf-8");
//include ("saestorage.class.php");
//echo $_GET['id'];
?>
<!DOCTYPE HTML>
<html>
<body>
<embed width=100% height=100% fullscreen=yes src="<?php echo $_GET['id'];?>" />
</body>
</html> 下图是显示我们的云盘中PDF的例子：<html> <body> <embed width=100% height=100% fullscreen=yes src="http://courseweb-coursewebpdf.stor.sinaapp.com/Expected%20Divergence%20based%20Feature%20Selection.pdf" /> </body> </html>你通过上面代码可以显示如下图所示的在线PDF效果。
<form action="upload.php" method="post" enctype="multipart/form-data">
<TABLE id="operate" cellSpacing=0 cellPadding=0 width="80%" align=right border=0 style="DISPLAY: none">
<tr>
<td colspan="3"><hr width="90%" size="1" color="#FF0000"></td>
</tr>
<TR>
<td width="80"><div align="right">课程编号: </div></td>
<td><?php echo $_SESSION['courseid']; ?></td>
<td></td>
</TR>
<TR>
<td width="120"><div align="right">课件名称: </div></td>
<td width="250"><input type="text" name="kjname" id="kjname" value="" style=width:165pt; maxlength="50"/></td>
<td></td>
</TR>
<TR>
<td ><div align="right">上传课件: </div></td>
<td><input type="file" name="myfile" value="" style='font-size:16px'/>（*小于2M）</td>
</TR>
<TR height=4>
<TD colspan="3">
</TD>
</TR>
<tr>
<td colspan="3"><hr width="90%" size="1" color="#FF0000"></td>
</tr>
<tr>
<td colspan="3" align="middle"><div align="middle">
<input type="submit" style='font-size:22px' name="submit" value="确认上传"/>
</div></td>
</tr>
</TABLE>
</form> 而上传文件upload.php代码如下，主要是通过<input type="file" name="myfile"中myfile对应上传的文件PDF属性，并判断是否是PDF文件。<?php
header("Content-Type: text/html; charset=utf-8");
include ("../database/human.php");
include ("../database/course.php");
session_start();
if($_POST)
{
$file_name= $_FILES['myfile']['name'] ;
$tmp_name = $_FILES['myfile']['tmp_name'];
if ($_FILES['myfile']['type'] != "application/pdf") {
echo "<p>请上传 PDF 格式的文件.</p>";
}
else {
if(is_uploaded_file($tmp_name)) {
//upload file
$dest_dir='pdf'; //上传文件的路径
$name=$dest_dir.'/'.time().".pdf";
$time = time();
$result=move_uploaded_file($tmp_name,$name);
if($result==1) {
echo "<p>成功上传</p>";
$path="http://localhost:8080/CourseStudy/teacher/".$name;
//echo $path;
//插入数据
$sql = "INSERT INTO Courseware_PDF (CP_Cno,CP_Cid,CP_Cwname,CP_PDFurl) ";
$sql .= "VALUES ('".$time."','".$_SESSION['courseid']."','".$_POST['kjname']."','".$path."');";
echo $sql;
$hgi=new HttpPostInf();
$result=$hgi->doquery('1',$sql);
header('Location:main_right3-3.php');
}
}
else {
echo "<p>上传文件失败</p>";
}
}
}
?> 如下图所示，选择PDF并上传的运行结果，同时文件上传至文件夹为安装的Apache路径“F:\\xampp\htdocs\CourseStudy\pdf”路径下。
PHP+JavaScript+HTML实现上传PDF和浏览PDF课件
标签：php javascript html 上传pdf 浏览pdf
原文地址：http://blog.csdn.net/eastmount/article/details/44090167
