我一直在尝试使用 Fine Uploader。我对分块和恢复功能非常感兴趣，但是我在将文件重新组合到服务器端时遇到了困难；
我发现我必须在服务器端允许一个空白文件扩展名以允许上传块，否则上传将因未知文件类型而失败。它使用“blob”和“blob63”（无文件扩展名）等文件名上传块，但是在上传完成时不会将它们合并回来。
任何帮助或指示将不胜感激。
$('#edit-file-uploader').fineUploader({
request: {
endpoint: 'upload.php'
},
multiple: false,
validation:{
allowedExtentions: ['stl', 'obj', '3ds', 'zpr', 'zip'],
sizeLimit: 104857600 // 100mb * 1024 (kb) * 1024 (bytes)
},
text: {
uploadButton: 'Select File'
},
autoUpload: false,
chunking: {
enabled: true
},
callbacks: {
onComplete: function(id, fileName, responseJSON) {
if (responseJSON.success) {
/** some code here **??
}
}
});
这是服务器端脚本（PHP）：
// list of valid extensions, ex. array("stl", "xml", "bmp")
$allowedExtensions = array("stl", "");
// max file size in bytes
$sizeLimit = null;
$uploader = new qqFileUploader($allowedExtensions, $sizeLimit);
// Call handleUpload() with the name of the folder, relative to PHP's getcwd()
$result = $uploader->handleUpload('uploads/');
// to pass data through iframe you will need to encode all html tags
echo htmlspecialchars(json_encode($result), ENT_NOQUOTES);
/******************************************/
/**
* Handle file uploads via XMLHttpRequest
*/
class qqUploadedFileXhr {
/**
* Save the file to the specified path
* @return boolean TRUE on success
*/
public function save($path) {
$input = fopen("php://input", "r");
$temp = tmpfile();
$realSize = stream_copy_to_stream($input, $temp);
fclose($input);
if ($realSize != $this->getSize()){
return false;
}
$target = fopen($path, "w");
fseek($temp, 0, SEEK_SET);
stream_copy_to_stream($temp, $target);
fclose($target);
return true;
}
/**
* Get the original filename
* @return string filename
*/
public function getName() {
return $_GET['qqfile'];
}
/**
* Get the file size
* @return integer file-size in byte
*/
public function getSize() {
if (isset($_SERVER["CONTENT_LENGTH"])){
return (int)$_SERVER["CONTENT_LENGTH"];
} else {
throw new Exception('Getting content length is not supported.');
}
}
}
/**
* Handle file uploads via regular form post (uses the $_FILES array)
*/
class qqUploadedFileForm {
/**
* Save the file to the specified path
* @return boolean TRUE on success
*/
public function save($path) {
return move_uploaded_file($_FILES['qqfile']['tmp_name'], $path);
}
/**
* Get the original filename
* @return string filename
*/
public function getName() {
return $_FILES['qqfile']['name'];
}
/**
* Get the file size
* @return integer file-size in byte
*/
public function getSize() {
return $_FILES['qqfile']['size'];
}
}
/**
* Class that encapsulates the file-upload internals
*/
class qqFileUploader {
private $allowedExtensions;
private $sizeLimit;
private $file;
private $uploadName;
/**
* @param array $allowedExtensions; defaults to an empty array
* @param int $sizeLimit; defaults to the server's upload_max_filesize setting
*/
function __construct(array $allowedExtensions = null, $sizeLimit = null){
if($allowedExtensions===null) {
$allowedExtensions = array();
}
if($sizeLimit===null) {
$sizeLimit = $this->toBytes(ini_get('upload_max_filesize'));
}
$allowedExtensions = array_map("strtolower", $allowedExtensions);
$this->allowedExtensions = $allowedExtensions;
$this->sizeLimit = $sizeLimit;
$this->checkServerSettings();
if(!isset($_SERVER['CONTENT_TYPE'])) {
$this->file = false;
} else if (strpos(strtolower($_SERVER['CONTENT_TYPE']), 'multipart/') === 0) {
$this->file = new qqUploadedFileForm();
} else {
$this->file = new qqUploadedFileXhr();
}
}
/**
* Get the name of the uploaded file
* @return string
*/
public function getUploadName(){
if( isset( $this->uploadName ) )
return $this->uploadName;
}
/**
* Get the original filename
* @return string filename
*/
public function getName(){
if ($this->file)
return $this->file->getName();
}
/**
* Internal function that checks if server's may sizes match the
* object's maximum size for uploads
*/
private function checkServerSettings(){
$postSize = $this->toBytes(ini_get('post_max_size'));
$uploadSize = $this->toBytes(ini_get('upload_max_filesize'));
if ($postSize < $this->sizeLimit || $uploadSize < $this->sizeLimit){
$size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';
die(json_encode(array('error'=>'increase post_max_size and upload_max_filesize to ' . $size)));
}
}
/**
* Convert a given size with units to bytes
* @param string $str
*/
private function toBytes($str){
$val = trim($str);
$last = strtolower($str[strlen($str)-1]);
switch($last) {
case 'g': $val *= 1024;
case 'm': $val *= 1024;
case 'k': $val *= 1024;
}
return $val;
}
/**
* Handle the uploaded file
* @param string $uploadDirectory
* @param string $replaceOldFile=true
* @returns array('success'=>true) or array('error'=>'error message')
*/
function handleUpload($uploadDirectory, $replaceOldFile = FALSE){
if (!is_writable($uploadDirectory)){
return array('error' => "Server error. Upload directory isn't writable.");
}
if (!$this->file){
return array('error' => 'No files were uploaded.');
}
$size = $this->file->getSize();
if ($size == 0) {
return array('error' => 'File is empty');
}
if ($size > $this->sizeLimit) {
return array('error' => 'File is too large');
}
$pathinfo = pathinfo($this->file->getName());
$filename = $pathinfo['filename'];
//$filename = md5(uniqid());
$ext = @$pathinfo['extension']; // hide notices if extension is empty
if($this->allowedExtensions && !in_array(strtolower($ext), $this->allowedExtensions)){
$these = implode(', ', $this->allowedExtensions);
return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
}
$ext = ($ext == '') ? $ext : '.' . $ext;
if(!$replaceOldFile){
/// don't overwrite previous files that were uploaded
while (file_exists($uploadDirectory . DIRECTORY_SEPARATOR . $filename . $ext)) {
$filename .= rand(10, 99);
}
}
$this->uploadName = $filename . $ext;
if ($this->file->save($uploadDirectory . DIRECTORY_SEPARATOR . $filename . $ext)){
return array('success'=>true);
} else {
return array('error'=> 'Could not save uploaded file.' .
'The upload was cancelled, or server error encountered');
}
}
}