feat(video): 添加视频文件断点续传和多格式支持功能

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4 days ago fcd790b413d935ca1c82607a53d613d34503aa19

feat(video): 添加视频文件断点续传和多格式支持功能

- 在playVideo方法中添加HttpServletRequest参数以获取Range请求头
- 实现HTTP Range请求解析和处理，支持视频断点续传功能
- 添加getContentTypeByExtension方法，根据文件扩展名返回对应MIME类型
- 支持多种视频格式包括mp4、avi、mov、wmv、flv、webm、mkv等
- 实现分段文件读取和传输，提升大文件播放性能
- 添加Range请求验证和错误处理机制
- 设置Accept-Ranges响应头以表明服务器支持范围请求

 src/main/java/cc/mrbird/febs/ai/controller/fileUpload/FileUploadController.java

@@ -8,6 +8,7 @@
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.nio.file.Files;
@@ -125,7 +126,7 @@
     * 播放视频文件
     */
    @GetMapping("/play/{fileName}")
    public void playVideo(@PathVariable("fileName") String fileName, HttpServletResponse response) {
    public void playVideo(@PathVariable("fileName") String fileName, HttpServletRequest request, HttpServletResponse response) {
        try {
            String companyId = getCurrentUserCompanyId();
            String uploadDir = baseUploadDir + "/" + companyId;
@@ -135,18 +136,77 @@
                return;
            }

            // 设置响应头
            response.setContentType("video/mp4");
            response.setContentLengthLong(Files.size(filePath));
            response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
            // 获取文件大小
            long fileSize = Files.size(filePath);
            
            // 检查是否有Range请求头
            String rangeHeader = request.getHeader("Range");
            if (rangeHeader != null) {
                // 解析Range头，格式为"bytes=start-end"
                String[] ranges = rangeHeader.replace("bytes=", "").split("-");
                long start = 0, end = fileSize - 1;
                
                if (!ranges[0].isEmpty()) {
                    start = Long.parseLong(ranges[0]);
                }
                if (ranges.length > 1 && !ranges[1].isEmpty()) {
                    end = Long.parseLong(ranges[1]);
                } else {
                    end = fileSize - 1;
                }
                
                // 确保范围有效
                if (start > end || start >= fileSize) {
                    response.setStatus(HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE.value());
                    return;
                }
                
                // 限制结束位置不超过文件大小
                if (end >= fileSize) {
                    end = fileSize - 1;
                }
                
                // 计算内容长度
                long contentLength = end - start + 1;
                
                // 设置响应状态和头部信息
                response.setStatus(HttpStatus.PARTIAL_CONTENT.value());
                response.setContentType(getContentTypeByExtension(fileName));
                response.setContentLengthLong(contentLength);
                response.setHeader("Content-Range", "bytes " + start + "-" + end + "/" + fileSize);
                response.setHeader("Accept-Ranges", "bytes");
                response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
                
                // 从指定位置开始读取文件
                try (RandomAccessFile randomAccessFile = new RandomAccessFile(filePath.toFile(), "r");
                     OutputStream outputStream = response.getOutputStream()) {
                    
                    randomAccessFile.seek(start);
                    byte[] buffer = new byte[8192];
                    long remaining = contentLength;
                    int bytesRead;
                    
                    while (remaining > 0 && (bytesRead = randomAccessFile.read(buffer, 0, (int) Math.min(buffer.length, remaining))) != -1) {
                        outputStream.write(buffer, 0, bytesRead);
                        remaining -= bytesRead;
                    }
                }
            } else {
                // 没有Range头，返回完整文件
                response.setStatus(HttpStatus.OK.value());
                response.setContentType(getContentTypeByExtension(fileName));
                response.setContentLengthLong(fileSize);
                response.setHeader("Accept-Ranges", "bytes");
                response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");

            // 流式传输文件
            try (InputStream inputStream = Files.newInputStream(filePath);
                 OutputStream outputStream = response.getOutputStream()) {
                byte[] buffer = new byte[8192];
                int bytesRead;
                while ((bytesRead = inputStream.read(buffer)) != -1) {
                    outputStream.write(buffer, 0, bytesRead);
                // 流式传输文件
                try (InputStream inputStream = Files.newInputStream(filePath);
                     OutputStream outputStream = response.getOutputStream()) {
                    byte[] buffer = new byte[8192];
                    int bytesRead;
                    while ((bytesRead = inputStream.read(buffer)) != -1) {
                        outputStream.write(buffer, 0, bytesRead);
                    }
                }
            }
        } catch (Exception e) {
@@ -156,6 +216,40 @@
    }

    /**
     * 根据文件扩展名获取MIME类型
     */
    private String getContentTypeByExtension(String fileName) {
        String extension = "";
        int lastDotIndex = fileName.lastIndexOf('.');
        if (lastDotIndex > 0) {
            extension = fileName.substring(lastDotIndex).toLowerCase();
        }
        
        switch (extension) {
            case ".mp4":
                return "video/mp4";
            case ".avi":
                return "video/x-msvideo";
            case ".mov":
                return "video/quicktime";
            case ".wmv":
                return "video/x-ms-wmv";
            case ".flv":
                return "video/x-flv";
            case ".webm":
                return "video/webm";
            case ".mkv":
                return "video/x-matroska";
            case ".m3u8":
                return "application/vnd.apple.mpegurl";
            case ".ts":
                return "video/MP2T";
            default:
                return "application/octet-stream";
        }
    }

    /**
     * 获取文件列表
     */
    @GetMapping("/list")