1.配置staticfiles(program文件中)
1 | app.UseStaticFiles(); |
2.在wwwroot下创建upload文件夹
3.返回结果封装
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | namespace webapi;/// <summary>/// 统一数据响应格式/// </summary>public class Results{ /// <summary> /// 自定义的响应码，可以和http响应码一致，也可以不一致 /// </summary> public int Code { get; set; } /// <summary> /// 中文消息提示 /// </summary> public string? Msg { get; set; } /// <summary> /// 是否成功 /// </summary> public bool Success { get; set; } /// <summary> /// 响应的数据 /// </summary> public T? Data { get; set; } /// <summary> /// 返回的Token: 如果有值，则前端需要此这个值替旧的token值 /// </summary> public string? Token { get; set; } /// <summary> /// 设置数据的结果 /// </summary> /// 数据 /// public static Results DataResult(T data) { return new Results { Code = 1, Data = data, Msg = "请求成功", Success = true }; } /// <summary> /// 响应成功的结果 /// </summary> /// /// public static Results SuccessResult(string msg = "操作成功") { return new Results { Code = 1, Data = default, Msg = msg, Success = true }; } /// <summary> /// 响应失败的结果 /// </summary> /// /// public static Results FailResult(string msg = "请求失败") { return new Results { Code = -1, Data = default, Msg = msg, Success = false }; } /// <summary> /// 参数有误 /// </summary> /// /// public static Results InValidParameter(string msg = "参数有误") { return new Results { Code = -1, Data = default, Msg = msg, Success = false }; } /// <summary> /// 获取结果 /// </summary> /// /// /// /// /// public static Results GetResult(int code = 0, string? msg = null, T? data = default, bool success = true) { return new Results { Code = code, Data = data, Msg = msg, Success = success }; } /// <summary> /// 设置token结果 /// </summary> /// /// public static Results TokenResult(string token) { return new Results { Code = 1, Data = default, Msg = "请求成功", Success = true, Token = token }; }} |
4.创建一个新的控制器
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | using Microsoft.AspNetCore.Mvc;using Microsoft.AspNetCore.WebUtilities;using Microsoft.Net.Http.Headers;namespace webapi.Controllers;/// <summary>/// 文件上传/// </summary>[ApiController][Route("[controller]/[action]")]public class UploadController : ControllerBase{ private readonly IWebHostEnvironment _hostEnvironment; /// <summary> /// 注入服务 /// </summary> /// public UploadController(IWebHostEnvironment hostEnvironment) { _hostEnvironment = hostEnvironment; } /// <summary> /// 上传文件（支持多文件/大文件500M） /// </summary> /// [HttpPost] [RequestFormLimits(MultipartBodyLengthLimit = 609715200)] [RequestSizeLimit(609715200)] public async Task>> UploadFile() { var request = HttpContext.Request; if (!request.HasFormContentType || !MediaTypeHeaderValue.TryParse(request.ContentType, out var mediaTypeHeader) || string.IsNullOrEmpty(mediaTypeHeader.Boundary.Value)) { return Results>.FailResult("文件类型不支持"); } var reader = new MultipartReader(mediaTypeHeader.Boundary.Value, request.Body); var section = await reader.ReadNextSectionAsync(); List serverFilePathList = new(); while (section != null) { var hasContentDispositionHeader = ContentDispositionHeaderValue.TryParse(section.ContentDisposition, out var contentDisposition); if (hasContentDispositionHeader && contentDisposition!.DispositionType.Equals("form-data") && !string.IsNullOrEmpty(contentDisposition.FileName.Value)) { // 获取文件后缀名 var extension = Path.GetExtension(contentDisposition.FileName.Value); // 为文件重命名，防止文件重名 var fileName = DateTime.Now.ToString("yyyyMMddHHmmssfff") + extension; // 文件保存的文件夹路径 var uploadPath = Path.Combine(_hostEnvironment.WebRootPath, "upload"); if (!Directory.Exists(uploadPath)) { Directory.CreateDirectory(uploadPath); } var fileFullPath = Path.Combine(uploadPath, fileName); try { using var targetStream = System.IO.File.Create(fileFullPath); await section.Body.CopyToAsync(targetStream); serverFilePathList.Add("/upload/" + fileName); } catch (Exception e) { Console.WriteLine(e); } } section = await reader.ReadNextSectionAsync(); } return Results>.DataResult(serverFilePathList); }} |
5.使用postman工具测试
6.查看本地上传文件
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