using System;using System.IO;using System.Text;using System.Web;using System.Web.Mvc;
namespace VideoUpload.Controllers{ /// <summary> /// 文件，图片，视频，音频统一上传服务 /// </summary> public class FileUploadController : Controller { /// <summary> /// 对验证和处理 HTML 窗体中的输入数据所需的信息进行封装，如FromData拼接而成的文件[图片,视频，文档等文件上传] /// </summary> /// <param name="context">FemContext对验证和处理html窗体中输入的数据进行封装</param> /// <returns></returns> [AcceptVerbs(HttpVerbs.Post)] public ActionResult FileLoad(FormContext context)//FemContext对验证和处理html窗体中输入的数据进行封装 {
HttpPostedFileBase httpPostedFileBase = Request.Files[0];//获取文件流 if (httpPostedFileBase != null) { try { ControllerContext.HttpContext.Request.ContentEncoding = Encoding.GetEncoding("UTF-8"); ControllerContext.HttpContext.Response.Charset = "UTF-8";
string fileName = Path.GetFileName(httpPostedFileBase.FileName);//原始文件名称 string fileExtension = Path.GetExtension(fileName);//文件扩展名
byte[] fileData = ReadFileBytes(httpPostedFileBase);//文件流转化为二进制字节
string result = SaveFile(fileExtension, fileData);//文件保存 return string.IsNullOrEmpty(result) ? Json(new { code = 0, path = "", msg = "网络异常，文件上传失败~" }) : Json(new { code = 1, path = result, msg = "文件上传成功" }); } catch (Exception ex) { return Json(new { code = 0, msg = ex.Message, path = "" }); } } else { return Json(new { code = 0, path = "", msg = "网络异常，文件上传失败~" }); } }
/// <summary> /// 将文件流转化为二进制字节 /// </summary> /// <param name="fileData">图片文件流</param> /// <returns></returns> private byte[] ReadFileBytes(HttpPostedFileBase fileData) { byte[] data; using (var inputStream = fileData.InputStream) { if (!(inputStream is MemoryStream memoryStream)) { memoryStream = new MemoryStream(); inputStream.CopyTo(memoryStream); } data = memoryStream.ToArray(); } return data; }
/// <summary> /// 保存文件 /// </summary> /// <param name="fileExtension">文件扩展名</param> /// <param name="fileData">图片二进制文件信息</param> /// <returns></returns> private string SaveFile(string fileExtension, byte[] fileData) { string result; string saveName = Guid.NewGuid().ToString() + fileExtension; //保存文件名称 string basePath = "UploadFile"; string saveDir = DateTime.Now.ToString("yyyy-MM-dd");
// 文件上传后的保存路径 string serverDir = Path.Combine(Server.MapPath("~/"), basePath, saveDir);
string fileNme = Path.Combine(serverDir, saveName);//保存文件完整路径 try { var savePath = Path.Combine(saveDir, saveName);
//项目中是否存在文件夹，不存在创建 if (!Directory.Exists(serverDir)) { Directory.CreateDirectory(serverDir); }
System.IO.File.WriteAllBytes(fileNme, fileData);//WriteAllBytes创建一个新的文件，按照对应的文件流写入，假如已存在则覆盖
//返回前端项目文件地址 result = "/" + basePath + "/" + saveDir + "/" + saveName; } catch (Exception ex) { result = "发生错误" + ex.Message; } return result; }
}}
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