上图就是大致的流程
一、标题图片
上传课程的标题图片
Ajax发送请求到后端
后端接收到图片使用IO流去保存图片，返回图片的信息对象
JS回调函数接收对象通过$("元素id").val(值)，方式给页面form表达img标签src属性值，达到上传图片并回显
二、大文件上传（流媒体、音频、.zip文件等）
页面div点击事件，选中一个视频文件
JS判断文件大小，判断文件类型是否合法
3.JS循环切片，计算总片数，计算每一片的起始位置，循环上传
4.发送Ajax转给后端切片
5.后端接收并创建临时目录存放
/**
* 分片上传，前端调用此方法
* @param request
* @param guid
* @param chunk
* @param file
* @return
*/
@PostMapping("/uploadSlice")
@ResponseBody
public ResponseResult<?> uploadSlice2(HttpServletRequest request, @RequestParam("guid") String guid,
@RequestParam("chunk") Integer chunk,
@RequestParam("file") MultipartFile file) {
if (this.uploadSlice(request, guid, chunk, file)){
return ResponseResultUtils.genResult("上传成功","");
}else{
return ResponseResultUtils.genErrorResult("上传失败");
}
}
/**
* 分片上传的具体方法
* @param request
* @param guid
* @param chunk
* @param file
* @return
*/
private boolean uploadSlice(HttpServletRequest request, String guid, Integer chunk, MultipartFile file) {
try {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
logger.info("isMultipart = {}",isMultipart);
if (isMultipart) {
if (chunk == null){
chunk = 0;
}
// 临时目录用来存放所有分片文件
String tempFileDir = rootFilePath + bigPath + guid;
File parentFileDir = new File(tempFileDir);
if (!parentFileDir.exists()) {
parentFileDir.mkdirs();
}
logger.info("接到上传的分片文件,{},{},{}",guid,chunk,tempFileDir);
// 分片处理时，前台会多次调用上传接口，每次都会上传文件的一部分到后台
File tempPartFile = new File(parentFileDir, guid + "_" + chunk + ".part");
FileUtils.copyInputStreamToFile(file.getInputStream(), tempPartFile);
}
} catch (Exception e) {
return false;
}
return true;
}6.计数器变量值=总片数时，发送合并请求
7.后端合并
/**
* 分片文件合并，前端调用此方法
* @param guid
* @param fileName
* @return
*/
@RequestMapping("/uploadMerge")
@ResponseBody
public ResponseResult<?> uploadMerge2(@RequestParam("guid") String guid, @RequestParam("fileName") String fileName) {
// 得到 destTempFile 就是最终的文件
SpaceImage image = this.uploadMerge(guid, fileName);
if(null != imageSpaceImage){
return ResponseResultUtils.genResult(imageSpaceImage,"合并成功");
}else{
return ResponseResultUtils.genErrorResult("合并文件失败");
}
}
private ImageSpaceImage uploadMerge(String guid, String fileName){
SpaceImage image = mergeFile(guid, fileName);
//此处需要注意，OSS需要再次切片上传，但minIO是不用得，它默认5M超过就会自动切片
String path = "";
//移除文件
poolTaskExecutor.execute(() -> {
com.eyang.ecpp.utils.FileUtils.deleteFile(rootFilePath+bigPath);
});
return imageSpaceImage;
}
private ImageSpaceImage mergeFile(String guid, String fileName) {
logger.info("接到上传的分片文件合并请求,{},{}",guid,fileName);
try {
String sName = fileName.substring(fileName.lastIndexOf("."));
//时间格式化格式
Date currentTime = new Date();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS");
//获取当前时间并作为时间戳
String timeStamp = simpleDateFormat.format(currentTime);
//拼接新的文件名
String newName = timeStamp + sName;
simpleDateFormat = new SimpleDateFormat("yyyyMM");
String tempPath = rootFilePath + bigPath+guid;
String margePath = rootFilePath + bigPath+simpleDateFormat.format(currentTime);
File parentFileDir = new File(tempPath);
if (parentFileDir.isDirectory()) {
File destTempFile = new File(margePath, newName);
if (!destTempFile.exists()) {
//先得到文件的上级目录，并创建上级目录，在创建文件
destTempFile.getParentFile().mkdir();
destTempFile.createNewFile();
}
for (int i = 0; i < Objects.requireNonNull(parentFileDir.listFiles()).length; i++) {
File partFile = new File(parentFileDir, guid + "_" + i + ".part");
FileOutputStream destTempfos = new FileOutputStream(destTempFile, true);
//遍历"所有分片文件"到"最终文件"中
FileUtils.copyFile(partFile, destTempfos);
destTempfos.close();
}
// 删除临时目录中的分片文件
FileUtils.deleteDirectory(parentFileDir);
String[] resultArr = FileStorageUtils.saveBigFile(Files.readAllBytes(Paths.get(destTempFile.getPath())), com.eyang.ecpp.utils.FileUtils.getExtension(destTempFile.getName()));
ImageSpaceImage imageSpaceImage = new ImageSpaceImage();
//第一个是组名 第二个是改后的文件名
imageSpaceImage.setImgUrl(margePath+"/"+newName);
//imageSpaceImage.setName(destTempFile.getName());
imageSpaceImage.setName(fileName);
return imageSpaceImage;//destTempFile.getAbsolutePath();
}
} catch (Exception e) {
logger.error("切片文件合并，失败原因e：{}", e.getMessage());
}
return null;
}8.合并成功后进行转码
转码需要下载一个ffmpeg，下载完解压打开bin目录，打开电脑的环境变量往path中添加上bin的目录即可。
还需要引入依赖
<!-- 视频编码 -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.6</version>
</dependency>9.转码发送请求
10.后端转码
/**
* 视频编码
*
* @param absolutePath 绝对路径
* @return {@link ResponseResult}<{@link ?}>
*/
@RequiresPermissions("cms:article:edit")
@RequestMapping(value = "video/coding")
@ResponseBody
public ResponseResult<?> videoCoding(@RequestParam String absolutePath) {
TranscodeConfig transcodeConfig = new TranscodeConfig();
//设置视频封面
transcodeConfig.setPoster("1");
transcodeConfig.setTsSeconds("60");
ResponseResult<?> transResult = TranscodeFileUtils.transCodeFile(absolutePath, transcodeConfig);
String retUrl = "";
if (null != transResult) {
Map<String, Object> data = (Map<String, Object>) transResult.getData();
if (null != data) {
Map<String, Object> videoInfo = (Map<String, Object>) data.get("data");
if (null != videoInfo) {
retUrl = (String) videoInfo.get("m3u8");
}
}
}
return ResponseResultUtils.genResult(retUrl,"转码成功");
}视频转码配置实体类
package com.utils;
public class TranscodeConfig {
private String poster; // 截取封面的时间
private String tsSeconds; // ts分片大小，单位是秒
private String cutStart; // 视频裁剪，开始时间
private String cutEnd; // 视频裁剪，结束时间
public String getPoster() {
return poster;
}
public void setPoster(String poster) {
this.poster = poster;
}
public String getTsSeconds() {
return tsSeconds;
}
public void setTsSeconds(String tsSeconds) {
this.tsSeconds = tsSeconds;
}
public String getCutStart() {
return cutStart;
}
public void setCutStart(String cutStart) {
this.cutStart = cutStart;
}
public String getCutEnd() {
return cutEnd;
}
public void setCutEnd(String cutEnd) {
this.cutEnd = cutEnd;
}
public TranscodeConfig() {
}
public TranscodeConfig(String poster, String tsSeconds, String cutStart, String cutEnd) {
this.poster = poster;
this.tsSeconds = tsSeconds;
this.cutStart = cutStart;
this.cutEnd = cutEnd;
}
}
转码工具类
public class TranscodeFileUtils {
/**
* 视频根路径
*/
private static String videoFolder= Global.getConfig("video.folder");
private static final Logger LOGGER = LoggerFactory.getLogger(TranscodeFileUtils.class);
public static ResponseResult<Map<String, Object>> transCodeFile(String filePath, TranscodeConfig transcodeConfig){
try {
// 按照日期生成子目录
String today = DateTimeFormatter.ofPattern("yyyyMMdd").format(LocalDate.now());
String s = Identities.uuid2();
Path targetFolder = Paths.get(videoFolder, today, s);
// 执行转码操作
LOGGER.info("开始转码");
FFmpegUtils.transcodeToM3u8(filePath, targetFolder.toString(), transcodeConfig);
// 封装结果
Map<String, Object> videoInfo = new HashMap<>();
videoInfo.put("m3u8", String.join("\\", targetFolder.toString(), "index.m3u8"));
videoInfo.put("poster", String.join("\\", targetFolder.toString(), "poster.jpg"));
Map<String, Object> result = new HashMap<>();
result.put("success", true);
result.put("data", videoInfo);
return ResponseResultUtils.genResult(result,"转码成功！");
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static void main(String[] args){
System.out.println(TranscodeFileUtils.transCodeFile("E:\\录屏\\shipin\\test.mp4", new TranscodeConfig("00:00:00.001","15","","")));
}
}
转码工具类
public class FFmpegUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(FFmpegUtils.class);
// 跨平台换行符
private static final String LINE_SEPARATOR = System.getProperty("line.separator");
/**
* 生成随机16个字节的AESKEY
* @return
*/
private static byte[] genAesKey () {
try {
KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
keyGenerator.init(128);
return keyGenerator.generateKey().getEncoded();
} catch (NoSuchAlgorithmException e) {
return null;
}
}
/**
* 在指定的目录下生成key_info, key文件，返回key_info文件
* @param folder
* @throws IOException
*/
private static Path genKeyInfo(String folder) throws IOException {
// AES 密钥
byte[] aesKey = genAesKey();
// AES 向量
String iv = Hex.encodeHexString(genAesKey());
// key 文件写入
Path keyFile = Paths.get(folder, "key");
Files.write(keyFile, aesKey, StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
// key_info 文件写入
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("key").append(LINE_SEPARATOR); // m3u8加载key文件网络路径
stringBuilder.append(keyFile.toString()).append(LINE_SEPARATOR); // FFmeg加载key_info文件路径
stringBuilder.append(iv); // ASE 向量
Path keyInfo = Paths.get(folder, "key_info");
Files.write(keyInfo, stringBuilder.toString().getBytes(), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
return keyInfo;
}
/**
* 指定的目录下生成 master index.m3u8 文件
* @param file master m3u8文件地址
* @param indexPath 访问子index.m3u8的路径
* @param bandWidth 流码率
* @throws IOException
*/
private static void genIndex(String file, String indexPath, String bandWidth) throws IOException {
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.append("#EXTM3U").append(LINE_SEPARATOR);
stringBuilder.append("#EXT-X-STREAM-INF:BANDWIDTH=" + bandWidth).append(LINE_SEPARATOR); // 码率
stringBuilder.append(indexPath);
Files.write(Paths.get(file), stringBuilder.toString().getBytes(StandardCharsets.UTF_8), StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING);
}
/**
* 转码视频为m3u8
* @param source 源视频
* @param destFolder 目标文件夹
* @param config 配置信息
* @throws IOException
* @throws InterruptedException
*/
public static void transcodeToM3u8(String source, String destFolder, TranscodeConfig config) throws IOException, InterruptedException {
// 判断源视频是否存在
if (!Files.exists(Paths.get(source))) {
throw new IllegalArgumentException("文件不存在：" + source);
}
// 创建工作目录
Path workDir = Paths.get(destFolder, "ts");
Files.createDirectories(workDir);
// 在工作目录生成KeyInfo文件
Path keyInfo = genKeyInfo(workDir.toString());
// 构建命令
List<String> commands = new ArrayList<>();
commands.add("ffmpeg");
commands.add("-i");
commands.add(source); // 源文件
commands.add("-c:v");
commands.add("libx264"); // 视频编码为H264
commands.add("-c:a");
commands.add("copy"); // 音频直接copy
commands.add("-hls_key_info_file");
commands.add(keyInfo.toString()); // 指定密钥文件路径
commands.add("-hls_time");
commands.add(config.getTsSeconds()); // ts切片大小
commands.add("-hls_playlist_type");
commands.add("vod"); // 点播模式
commands.add("-hls_segment_filename");
commands.add("%06d.ts"); // ts切片文件名称
if (StringUtils.hasText(config.getCutStart())) {
commands.add("-ss");
commands.add(config.getCutStart()); // 开始时间
}
if (StringUtils.hasText(config.getCutEnd())) {
commands.add("-to");
commands.add(config.getCutEnd()); // 结束时间
}
commands.add("index.m3u8"); // 生成m3u8文件
// 构建进程
Process process = new ProcessBuilder()
.command(commands)
.directory(workDir.toFile())
.start();
// 读取进程标准输出
new Thread(() -> {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
String line = null;
while ((line = bufferedReader.readLine()) != null) {
LOGGER.info(line);
}
} catch (IOException e) {
}
}).start();
// 读取进程异常输出
new Thread(() -> {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
String line = null;
while ((line = bufferedReader.readLine()) != null) {
LOGGER.info(line);
}
} catch (IOException e) {
}
}).start();
// 阻塞直到任务结束
if (process.waitFor() != 0) {
throw new RuntimeException("视频切片异常");
}
// 切出封面
if (!screenShots(source, String.join(File.separator, destFolder, "poster.jpg"), config.getPoster())) {
throw new RuntimeException("封面截取异常");
}
// 获取视频信息
MediaInfo mediaInfo = getMediaInfo(source);
if (mediaInfo == null) {
throw new RuntimeException("获取媒体信息异常");
}
// 生成index.m3u8文件
genIndex(String.join(File.separator, destFolder, "index.m3u8"), "ts/index.m3u8", mediaInfo.getFormat().getBitRate());
// 删除keyInfo文件
Files.delete(keyInfo);
}
/**
* 获取视频文件的媒体信息
* @param source
* @return
* @throws IOException
* @throws InterruptedException
*/
public static MediaInfo getMediaInfo(String source) throws IOException, InterruptedException {
List<String> commands = new ArrayList<>();
commands.add("ffprobe");
commands.add("-i");
commands.add(source);
commands.add("-show_format");
commands.add("-show_streams");
commands.add("-print_format");
commands.add("json");
Process process = new ProcessBuilder(commands)
.start();
MediaInfo mediaInfo = null;
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
mediaInfo = new Gson().fromJson(bufferedReader, MediaInfo.class);
} catch (IOException e) {
e.printStackTrace();
}
if (process.waitFor() != 0) {
return null;
}
return mediaInfo;
}
/**
* 截取视频的指定时间帧，生成图片文件
* @param source 源文件
* @param file 图片文件
* @param time 截图时间 HH:mm:ss.[SSS]
* @throws IOException
* @throws InterruptedException
*/
public static boolean screenShots(String source, String file, String time) throws IOException, InterruptedException {
List<String> commands = new ArrayList<>();
commands.add("ffmpeg");
commands.add("-i");
commands.add(source);
commands.add("-ss");
commands.add(time);
commands.add("-y");
commands.add("-q:v");
commands.add("1");
commands.add("-frames:v");
commands.add("1");
commands.add("-f");
commands.add("image2");
commands.add(file);
Process process = new ProcessBuilder(commands)
.start();
// 读取进程标准输出
new Thread(() -> {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
String line = null;
while ((line = bufferedReader.readLine()) != null) {
LOGGER.info(line);
}
} catch (IOException e) {
}
}).start();
// 读取进程异常输出
new Thread(() -> {
try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
String line = null;
while ((line = bufferedReader.readLine()) != null) {
LOGGER.error(line);
}
} catch (IOException e) {
}
}).start();
return process.waitFor() == 0;
}
}
11.转码成功返回m3u8文件的路径，放到页面input隐藏标签中
编码成功后执行回调函数，m3u8文件赋给_data变量如下图
使用$(#页面元素id).val（值），下图是把m3u8赋值给页面的input
12.最后页面form提交，保存视频转码后m3u8的路径。
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