文件上传遇到IO异常——解决Cannot run program "ffmpeg": CreateProcess error=2, 系统找不到指定的文件。

            fileTypeEnum = FileTypeEnums.getFileTypeBySuffix(fileSuffix);
            if (FileTypeEnums.VIDEO == fileTypeEnum) {
                cutFile4Video(fileId, targetFilePath);
                //视频生成缩略图
                cover = month + "/" + currentUserFolderName + Constants.IMAGE_PNG_SUFFIX;
                String coverPath = targetFolderName + "/" + cover;
                // 视频生成封面图
                ScaleFilter.createCover4Video(new File(targetFilePath), Constants.LENGTH_150, new File(coverPath));
            } else if (FileTypeEnums.IMAGE == fileTypeEnum) {
                //生成缩略图
                cover = month + "/" + realFileName.replace(".", "_.");
                String coverPath = targetFolderName + "/" + cover;
                Boolean created = ScaleFilter.createThumbnailWidthFFmpeg(new File(targetFilePath), Constants.LENGTH_150, new File(coverPath), false);
                // 如果生成缩略图失败，则使用原图改名
                if (!created) {
                    FileUtils.copyFile(new File(targetFilePath), new File(coverPath));
                }
            }

    public static Boolean createThumbnailWidthFFmpeg(File file, int thumbnailWidth, File targetFile, Boolean delSource) {
        try {
            BufferedImage src = ImageIO.read(file);
            //thumbnailWidth 缩略图的宽度   thumbnailHeight 缩略图的高度
            int sorceW = src.getWidth();
            int sorceH = src.getHeight();
            //小于 指定高宽不压缩
            if (sorceW <= thumbnailWidth) {
                return false;
            }
            compressImage(file, thumbnailWidth, targetFile, delSource);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }


    public static void compressImage(File sourceFile, Integer width, File targetFile, Boolean delSource) {
        try {
            String cmd = "ffmpeg -i %s -vf scale=%d:-1 %s -y";
            ProcessUtils.executeCommand(String.format(cmd, sourceFile.getAbsoluteFile(), width, targetFile.getAbsoluteFile()), false);
            if (delSource) {
                FileUtils.forceDelete(sourceFile);
            }
        } catch (Exception e) {
            log.error("压缩图片失败");
        }
    }