本帖最后由 pringzl 于 2024-03-09 08:51 编辑
视频文件分片上传，整体思路是利用JavaScript将文件切片，然后循环调用上传接口 upload.php 将切片上传到服务器。
这样将由原来的一个大文件上传变为多个小文件同时上传，节省了上传时间，这就是文件分片上传的其中一个好处。 
测试了一个100多M的视频，也能很快完成上传。 
关键代码
index.html <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>视频文件分片上传</title>
<style>
*{
padding: 0;
margin: 0;
}
body {
background: #eee;
}
.title {
text-align: center;
font-size: 25px;
margin-top: 50px;
}
.video_upload {
width: 500px;
height: 210px;
line-height: 60px;
background-color: #fff;
margin: 30px auto 0;
border: 2px dashed #ccc;
border-radius: 10px;
position: relative;
cursor: pointer;
text-align: center;
line-height: 200px;
font-size: 17px;
}
.upload_icon {
width: 30px;
height: 30px;
margin: 90px auto 0;
display: block;
opacity: 0.5;
}
#fileInput {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
opacity: 0;
cursor: pointer;
}
#uploadButton {
width: 500px;
height: 40px;
border: none;
outline: none;
border-radius: 5px;
font-size: 17px;
margin: 15px auto;
background: #39f;
color: #fff;
cursor: pointer;
}
.progress {
width: 500px;
margin: 15px auto;
}
.progress progress {
width: 500px;
height: 30px;
}
#ret {
text-align: center;
font-size: 16px;
margin-top: 20px;
}
#ret video {
width: 300px;
}
#retUrl {
text-align: center;
font-size: 16px;
margin-top: 20px;
}
</style>
</head>
<body>
<p class="title">JavaScript+PHP实现视频文件分片上传</p>
<div class="video_upload">
<img src="upload.png" class="upload_icon" />
<input type="file" id="fileInput" accept="video/*">
</div>
<button id="uploadButton" style="display:none;">开始上传</button>
<div class="progress"></div>
<p id="ret"></p>
<p id="retUrl"></p>
<script>
// 定义全局变量
let videoFile = null;
let chunkSize = 1024 * 1024; // 1MB 分片大小
// 当文件选择框的值改变时触发该函数
function handleFileSelect(event) {
const fileList = event.target.files;
if (fileList.length > 0) {
videoFile = fileList[0];
console.log("选择了文件: ", videoFile.name);
document.querySelector('.video_upload').innerHTML = videoFile.name;
document.querySelector('#uploadButton').style.display = 'block';
}
}
// 分片并上传文件
async function uploadFile() {
if (!videoFile) {
console.error("请选择一个视频文件");
return;
}
const fileSize = videoFile.size;
let start = 0;
let end = Math.min(chunkSize, fileSize);
let chunkIndex = 0;
let totalChunks = Math.ceil(fileSize / chunkSize); // 总分片数
// 获取文件名
const fileName = videoFile.name;
while (start < fileSize) {
const chunk = videoFile.slice(start, end); // 从文件中截取一个分片
// 使用FormData来构建multipart/form-data格式的请求体
const formData = new FormData();
formData.append('file', chunk);
formData.append('chunkIndex', chunkIndex);
formData.append('fileName', fileName); // 将文件名作为 formData 的一部分
try {
const response = await fetch('upload.php', {
method: 'POST',
body: formData
});
if (!response.ok) {
throw new Error('上传失败');
}
console.log('上传分片 ', chunkIndex, ' 成功');
// 计算并显示上传进度
let progress = Math.round(((chunkIndex + 1) / totalChunks) * 100);
document.querySelector('.video_upload').textContent = '上传进度 ' + progress + '%';
document.querySelector('#uploadButton').textContent = '正在上传...';
document.querySelector('.progress').innerHTML = '<progress value="' + progress + '" max="100"><span>' + progress + '</span>%</progress>';
console.log('上传进度:', progress + '%');
} catch (error) {
console.error('上传分片 ', chunkIndex, ' 失败: ', error.message);
return;
}
start = end;
end = Math.min(start + chunkSize, fileSize);
chunkIndex++;
}
console.log('文件上传完成');
// 上传完成后发送通知给服务器进行合并
notifyServerForMerge(fileName);
}
// 发送通知给服务器进行合并
async function notifyServerForMerge(fileName) {
try {
const response = await fetch('merge_chunks.php', {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({ fileName: fileName })
});
if (!response.ok) {
throw new Error('无法通知服务器进行合并');
}
const res_data = await response.json();
console.log('已通知服务器进行合并');
document.querySelector('.video_upload').textContent = '上传完成！';
document.querySelector('#ret').innerHTML = '<video autoplay controls src="'+res_data.filePath+'"></video>';
document.querySelector('#retUrl').textContent = 'MP4视频直链：' + res_data.filePath;
document.querySelector('#uploadButton').style.display = 'none';
} catch (error) {
console.error('通知服务器进行合并时发生错误: ', error.message);
}
}
// 注册文件选择框的change事件
document.getElementById('fileInput').addEventListener('change', handleFileSelect);
// 注册上传按钮的click事件
document.getElementById('uploadButton').addEventListener('click', uploadFile);
</script>
</body>
</html>
upload.php <?php
// 设置允许跨域访问
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: POST");
// 检查是否接收到文件和分片索引
if (isset($_FILES['file']['error']) && isset($_POST['chunkIndex']) && isset($_POST['fileName'])) {
$error = $_FILES['file']['error'];
$chunkIndex = $_POST['chunkIndex'];
$fileName = $_POST['fileName']; // 获取文件名
// 检查是否有错误
if ($error !== UPLOAD_ERR_OK) {
http_response_code(500);
echo json_encode(array(
'error' => '文件上传失败'
));
exit();
}
// 检查分片是不是MP4
if(pathinfo($fileName)['extension'] !== 'mp4') {
http_response_code(400);
echo json_encode(array(
'error' => '文件类型不符合'
));
exit();
}
// 设置存储目录和文件名
$uploadDir = './uploads/';
$filePath = $uploadDir . $fileName . '.' . $chunkIndex;
// 将分片移动到指定的目录
if (move_uploaded_file($_FILES['file']['tmp_name'], $filePath)) {
echo json_encode(array(
'success' => '分片上传成功'
));
} else {
http_response_code(500);
echo json_encode(array(
'error' => '分片上传失败'
));
}
} else {
http_response_code(400);
echo json_encode(array(
'error' => '缺少文件、分片索引或文件名'
));
}
?>
merge_chunks.php <?php
// 设置允许跨域访问
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: POST");
header("Content-Type: application/json");
// 获取请求体中的文件名
$data = json_decode(file_get_contents("php://input") , true);
$fileName = isset($data['fileName']) ? $data['fileName'] : null;
if ($fileName) {
$uploadDir = './uploads/';
$finalFilePath = $uploadDir . $fileName;
$totalChunks = count(glob($uploadDir . $fileName . '.*'));
// HTTP协议
$protoCol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https' : 'http';
$videoUrl = $protoCol.'://'.$_SERVER['SERVER_NAME'].dirname($_SERVER["REQUEST_URI"]).'/uploads/'.$fileName;
// 检查是否所有分片都已上传
if ($totalChunks > 0) {
// 所有分片都已上传，开始合并
$finalFile = fopen($finalFilePath, 'wb');
// 逐个读取分片并写入最终文件
for ($i = 0; $i < $totalChunks; $i++) {
$chunkFilePath = $uploadDir . $fileName . '.' . $i;
$chunkFile = fopen($chunkFilePath, 'rb');
stream_copy_to_stream($chunkFile, $finalFile);
fclose($chunkFile);
unlink($chunkFilePath); // 删除已合并的分片
}
fclose($finalFile);
http_response_code(200);
echo json_encode(array(
'success' => '文件合并成功',
'filePath' => $videoUrl
));
} else {
http_response_code(400);
echo json_encode(array(
'error' => '没有上传的分片'
));
}
} else {
http_response_code(400);
echo json_encode(array(
'error' => '缺少文件名'
));
}
?>
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发表于 2024-03-09 08:51
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