文件上传时传过来一个stream
代码如下：
1 /// <summary>
2 /// 上传文件
3 /// </summary>
4 /// <param name="fileName">文件名</param>
5 /// <param name="fileStream">文件流</param>
6 /// <returns></returns>
7 public ResponseType<int> UploadFile(string projectId, string DocId, string LastModifier, Stream fileStream)
8 {
9 ResponseType<int> result = new ResponseType<int>();
10 string Path = string.Empty;
11 try
12 {
13 if (fileStream == null)
14 {
15 throw new Exception("没有上传文件");
16 }
17 string relativePath = fileInfoBLL.GetFilePath(projectId, DocId);
18 Path = System.IO.Path.Combine(filePath, relativePath);
19 string fileName = fileInfoBLL.SaveFie(Path, fileStream);
20
21 FilesInfo filesInfo = new FilesInfo();
22 filesInfo.DocManageId = Convert.ToInt32(DocId);
23 filesInfo.FileName = fileName;
24 filesInfo.FilePath = System.IO.Path.Combine(relativePath, fileName);
25 filesInfo.IsChecked = false;
26 filesInfo.LastmodifiedDateTime = DateTime.Now;
27 filesInfo.LastModifier = LastModifier;
28 filesInfo.ProjectId = Convert.ToInt32(projectId);
29 int fileId = fileInfoBLL.SaveFileInfo(filesInfo);
30 if (fileId > 0)
31 {
32 result.IsSuccess = true;
33 result.ErrorMessage = "文件保存成功！";
34 result.Value = fileId;
35 }
36 }
37
38 catch (Exception ex)
39 {
40
41 ExceptionHandler.ExceptionHelper.Instance.HandleException(ex);
42 result.IsSuccess = false;
43 result.ErrorMessage = "文件保存失败！";
44 }
45
46 return result;
47 }
黄色部分为真正文件上传代码：
1 /// <summary>
2 /// 保存文件
3 /// </summary>
4 /// <param name="relatePath">文件保存的路径</param>
5 /// <param name="fileSteam">文件流</param>
6 public string SaveFie(string relatePath, Stream fileSteam)
7 {
8 string fileName = string.Empty;
9 try
10 {
11
12 if (!Directory.Exists(relatePath)) //判断文件目录
13 {
14 Directory.CreateDirectory(relatePath);
15 }
16
17 using (var ms = new MemoryStream())
18 {
19 fileSteam.CopyTo(ms);
20 ms.Position = 0;
21
22 var encoding = Encoding.UTF8;
23 var reader = new StreamReader(ms, encoding);
24 var headerLength = 0L;
25
26 //读取第一行
27 var firstLine = reader.ReadLine();
28 //计算偏移（字符串长度+回车换行2个字符）
29 headerLength += encoding.GetBytes(firstLine).LongLength + 2;
30
31 //读取第二行
32 var secondLine = reader.ReadLine();
33 //计算偏移（字符串长度+回车换行2个字符）
34 headerLength += encoding.GetBytes(secondLine).LongLength + 2;
35 //解析文件名
36
37 fileName = new System.Text.RegularExpressions.Regex("filename=\"(?<fn>.*)\"").Match(secondLine).Groups["fn"].Value;
38
39 //一直读到空行为止
40 while (true)
41 {
42 //读取一行
43 var line = reader.ReadLine();
44 //若到头，则直接返回
45 if (line == null )
46
47 break;
48 //若未到头，则计算偏移（字符串长度+回车换行2个字符）
49 headerLength += encoding.GetBytes(line).LongLength + 2;
50
51 if (string.IsNullOrEmpty(line))
52 break;
53 }
54
55 //设置偏移，以开始读取文件内容
56 ms.Position = headerLength;
57 ////减去末尾的字符串：“\r\n--\r\n”
58 ms.SetLength(ms.Length - encoding.GetBytes(firstLine).LongLength - 3 * 2);
59
60 using (var fileToupload = new FileStream(System.IO.Path.Combine(relatePath,fileName), FileMode.Create))
61 {
62 ms.CopyTo(fileToupload);
63 fileToupload.Close();
64 fileToupload.Dispose();
65 }
66 }
67 }
68 catch (Exception ex)
69 {
70 ExceptionHandler.ExceptionHelper.Instance.HandleException(ex);
71 }
72
73 return fileName;
74 }
Rest文件上传,码迷,mamicode.com
时间： 2024-08-14 06:02:15