我正在尝试使用 Codeigniter 作为平台，基于文件夹结构和其中的各种文件创建目录树。我的 View 工作正常(除了下载指定文件的文件链接。)我对 Jquery 和 java 很陌生我的代码基于 Interwebs 上提到能够添加下载链接但没有解释如何添加的内容。
<html>
<?PHP if ($_SESSION['profilepath'] != NULL) { ?>
<div id="files">
<?php //print_r($folders);?>
</div>
<script type="text/javascript">
$(document).ready(function() {
var files = <?php print_r(json_encode($folders)); ?>;
var file_tree = build_file_tree(files);
file_tree.appendTo('#files');
function build_file_tree(files) {
var tree = $('<ul>');
for (x in files) {
if (typeof files[x] == "object") {
var span = $('<span>').html(x).appendTo(
$('<li>').appendTo(tree).addClass('folder')
);
var subtree = build_file_tree(files[x]).hide();
span.after(subtree);
span.click(function() {
$(this).parent().find('ul:first').toggle();
});
} else {
$('<li>').html(files[x]).appendTo(tree).addClass('file').click(function(){
window.location=$(this).find("a").attr("href");return false;})
//The click() function in the line above is where my links for download should be but I am unsure of what to do from here.
}
}
return tree;
}
});
</script>
</head>
<body>
<?PHP
} else {
$error = "Your user path is not set.";
print_r($error);
}
?>
</body>
</html>
最佳答案
嗯，我认为它更像是一个 PHP 的东西？您设置指向您的 php 脚本的链接，将文件名作为变量传递
href="download.php?file=folder\folder\folder\filename.ext"(可能需要对其进行哈希处理/url 编码)
$file = (isset($_GET['file']))?$_GET['file']:"";
检查它是否一切正常等..然后强制它显示下载对话框
if (!is_readable($file)) die('File not found or inaccessible!');
$size = filesize($file);
$name = rawurldecode($filename);
$known_mime_types = array(
"pdf" => "application/pdf",
"txt" => "text/plain",
"html" => "text/html",
"htm" => "text/html",
"exe" => "application/octet-stream",
"zip" => "application/zip",
"doc" => "application/msword",
"docx" => "application/msword",
"xls" => "application/vnd.ms-excel",
"xlsx" => "application/vnd.ms-excel",
"ppt" => "application/vnd.ms-powerpoint",
"gif" => "image/gif",
"png" => "image/png",
"jpeg" => "image/jpg",
"jpg" => "image/jpg",
"php" => "text/plain"
);
$file_extension = strtolower(substr(strrchr($file, "."), 1));
if (array_key_exists($file_extension, $known_mime_types)) {
$mime_type = $known_mime_types[$file_extension];
} else {
$mime_type = "application/force-download";
}
@ob_end_clean(); //turn off output buffering to decrease cpu usage
// required for IE, otherwise Content-Disposition may be ignored
if (ini_get('zlib.output_compression')) ini_set('zlib.output_compression', 'Off');
header('Content-Type: ' . $mime_type);
header("Content-Transfer-Encoding: binary");
header('Accept-Ranges: bytes');
/* The three lines below basically make the
download non-cacheable */
header("Cache-control: private");
header('Pragma: private');
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Content-Length: " . $size);
$new_length = $size;
$chunksize = 1 * (1024 * 1024); //you may want to change this
$bytes_send = 0;
/* output the file itself */
$chunksize = 1 * (1024 * 1024); //you may want to change this
$bytes_send = 0;
if ($file = fopen($file, 'r')) {
if (isset($_SERVER['HTTP_RANGE'])) fseek($file, $range);
while (!feof($file) && (!connection_aborted()) && ($bytes_send < $new_length)) {
$buffer = fread($file, $chunksize);
print($buffer); //echo($buffer); // is also possible
flush();
$bytes_send += strlen($buffer);
}
fclose($file);
} else die('Error - can not open file.');
关于php - 为目录树动态创建下载链接，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6311488/