tede/gx_api/GxPress/Api/GxPress.Api/AppControllers/videoController.cs

using System.IO;
using System.Threading.Tasks;
using Aliyun.Acs.Core.Http;
using Aliyun.Acs.Core.Utils;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.StaticFiles;

namespace GxPress.Api.AppControllers
{
    /// <summary>
    /// 访问
    /// </summary>
    [Route("/api/app/video")]
    [ApiController]
    [Authorize]
    public class VideoController : ControllerBase
    {
        private readonly IWebHostEnvironment _environment;

        public VideoController(IWebHostEnvironment environment)
        {
            _environment = environment;
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        [HttpGet]
        [AllowAnonymous]
        public IActionResult GetVideo()
        {
            try
            {
                // HttpResponse response = new HttpResponse();
                var dd = Common.Tools.StringUtils.GetWebRootPath(_environment.WebRootPath);
                var fis = new FileStream(dd + "/cache/20200428/music.mp4", FileMode.Open);
                var size = fis.Length; // 得到文件大小
                var data = new byte[size];
                fis.Write(data, 0, data.Length);
                var filepath = dd + "/cache/20200428/music.mp4";
                var provider = new FileExtensionContentTypeProvider();
                FileInfo fileInfo = new FileInfo(filepath);
                var ext = fileInfo.Extension;
                new FileExtensionContentTypeProvider().Mappings.TryGetValue(ext, out var contenttype);
                var result = File(data, contenttype ?? "application/octet-stream", fileInfo.Name);
                fis.Close();
                return result;
            }
            catch (FileNotFoundException e)
            {
                throw new Common.Exceptions.BusinessException(e.Message);
            }
            catch (IOException e)
            {
                throw new Common.Exceptions.BusinessException(e.Message);
            }
        }
    }
}