WebApi上传文件/.Net Core WebApi上传文件

 普通WebApi上传文件

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#region 上传文件         /// <summary>         /// 通过multipart/form-data方式上传文件         /// </summary>         /// <returns></returns>         [HttpPost]         public async Task<HttpResponseMessage> PostFile()         {             MessagesDataCodeModel json = new MessagesDataCodeModel(false, "无效参数", 401);               try             {                 // 是否请求包含multipart/form-data。                 if (!Request.Content.IsMimeMultipartContent())                 {                     logger.Error("上传格式不是multipart/form-data");                     throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);                 }                   string root = HttpContext.Current.Server.MapPath("/UploadFiles/");                 if (!Directory.Exists(HttpContext.Current.Server.MapPath("~/UploadFiles/")))                 {                     Directory.CreateDirectory(HttpContext.Current.Server.MapPath("~/UploadFiles/"));                 }                   var provider = new MultipartFormDataStreamProvider(root);                   StringBuilder sb = new StringBuilder(); // Holds the response body                   // 阅读表格数据并返回一个异步任务.                 await Request.Content.ReadAsMultipartAsync(provider);                   // 如何上传文件到文件名.                 foreach (var file in provider.FileData)                 {                     string orfilename = file.Headers.ContentDisposition.FileName.TrimStart('"').TrimEnd('"');                     FileInfo fileinfo = new FileInfo(file.LocalFileName);                     //sb.Append(string.Format("Uploaded file: {0} ({1} bytes)\n", fileInfo.Name, fileInfo.Length));                     //最大文件大小                     //int maxSize = Convert.ToInt32(SettingConfig.MaxSize);                     if (fileinfo.Length <= 0)                     {                         json.Success = false;                         json.Msg = "请选择上传文件";                         json.Code = 301;                     }                     else if (fileinfo.Length > ConfigHelper.MaxFileSize)                     {                         json.Msg = "上传文件大小超过限制";                         json.Code = 302;                     }                     else                     {                         string fileExt = orfilename.Substring(orfilename.LastIndexOf('.'));                         //定义允许上传的文件扩展名                         //String fileTypes = SettingConfig.FileTypes;                         //if (String.IsNullOrEmpty(fileExt) || Array.IndexOf(fileTypes.Split(','), fileExt.Substring(1).ToLower()) == -1)                         //{                         //    json.Msg = "图片类型不正确";                         //    json.Code = 303;                         //}                         //else                         //{                         //String ymd = DateTime.Now.ToString("yyyyMMdd", System.Globalization.DateTimeFormatInfo.InvariantInfo);                         //String newFileName = DateTime.Now.ToString("yyyyMMddHHmmss_ffff", System.Globalization.DateTimeFormatInfo.InvariantInfo);                           fileinfo.CopyTo(Path.Combine(root, fileinfo.Name + fileExt), true);                         json.Success = true;                         json.Msg = "操作成功";                         json.Code = 200;                         sb.Append("/UploadFiles/" + fileinfo.Name + fileExt);                         json.Data = sb.ToString();                         //}                     }                     fileinfo.Delete();//删除原文件                 }             }             catch (System.Exception e)             {                 json.Success = false;                 json.Msg = "服务器无响应";                 json.Code = 500;                 logger.Error("PostFile()服务器错误", e);             }             return ToJsonTran.ToJson(json);         }         #endregion 上传文件

　　.Net Core WebApi上传文件

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using Microsoft.AspNetCore.Mvc;   namespace CoreWebApiTest.Controllers {     [ApiController]     [Route("[controller]/[action]")]     public class UploadTestController : ControllerBase     {         private readonly IWebHostEnvironment env;           public UploadTestController(IWebHostEnvironment env)         {             this.env = env;         }         [HttpPost]         public JsonResult UploadImg1()         {             //http://192.168.9.24:28543/UploadTest/UploadImg1             var webRootPath = this.env.ContentRootPath;//获取项目路径             var filePath = $"UploadFile\\";             var dirPath = Path.Combine(webRootPath, filePath);             //D:\Demos\ConsoleApp1\CoreWebApiTest\UploadFile\             if (!Directory.Exists(dirPath))             {                 Directory.CreateDirectory(dirPath);             }             var files = HttpContext.Request.Form.Files;             foreach (var file in files)             {                 var fname = file.FileName;                 var fileExtension = Path.GetExtension(file.FileName);// 文件后缀                 var fileSize = file.Length;// 文件大小 1024 * 1024 * 10 = 10M                   using (FileStream fs = System.IO.File.Create(dirPath + fname))                 {                     file.CopyTo(fs);                     fs.Flush();                 }             }             return new JsonResult(new { Success = true, Message = "上传成功" });         }     } }

　　.Net Core WebApi上传文件，发送请求方法

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//控制台程序             string path = Path.Combine(AppContext.BaseDirectory, "img.png");             string fileName = Path.GetFileName(path);               //文件转byte[]             using FileStream fileStream = File.OpenRead(path);             long byteLen = fileStream.Length;             byte[] fileBytes = new byte[byteLen];             fileStream.Read(fileBytes, 0, (int)byteLen);               //填充图片文件二进制字节             var fileContent = new ByteArrayContent(fileBytes);             fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("form-data")             {                 Name = "file",                 FileName = fileName             };               var content = new MultipartFormDataContent();             content.Add(fileContent);               string url = "http://192.168.9.24:28543/UploadTest/UploadImg1";             var httpRequestMessage = new HttpRequestMessage(HttpMethod.Post, url);             httpRequestMessage.Content = content;               var httpClient = new HttpClient();             var httpResponseMessage = httpClient.SendAsync(httpRequestMessage).Result;             if (httpResponseMessage.IsSuccessStatusCode)             {                 using var contentStream = httpResponseMessage.Content.ReadAsStreamAsync().Result;                 using StreamReader sw = new StreamReader(contentStream);                 string res = sw.ReadToEnd();             }