WebAPI图片批量上传+修改图片名称

来源：互联网发布：131458淘宝卖家工具箱编辑：程序博客网时间：2024/04/30 07:10

前言：这几天在做一个图片上传的API，在网上找了很多资料，也学到了很多东西，最近刚接触WebAPI，好多东西都看不懂。还停留在webfrom的概念，哈哈其实webfrom也没学好，废话不多说了，先看代码。

public async Task<HttpResponseMessage> PostUpload(string Token, int Part)        {            if (Global.checkToken(Token))  //验证口令通过            {                // Check whether the POST operation is MultiPart?                  if (!Request.Content.IsMimeMultipartContent())                {                    throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);                }                // Prepare CustomMultipartFormDataStreamProvider in which our multipart form                  // data will be loaded.                  string partFolder = string.Empty;                switch (Part)                {                    case 1:                        partFolder = "MobileUploadImages_BaoGao";                        break;                    case 2:                        partFolder = "MobileUploadImages_ShenQing";                        break;                    case 3:                        partFolder = "MobileUploadImages_RenWu";                        break;                    default:                        partFolder = "MobileUploadImages_QiTa";                        break;                }                string fileSaveLocation = HttpContext.Current.Server.MapPath("~/"+ImageUploadPublic.FoldersAddress+"/"+partFolder);                if (!Directory.Exists(fileSaveLocation))                    Directory.CreateDirectory(fileSaveLocation);                CustomMultipartFormDataStreamProvider provider = new CustomMultipartFormDataStreamProvider(fileSaveLocation);                List<string> files = new List<string>();                try                {                    // Read all contents of multipart message into CustomMultipartFormDataStreamProvider.                                      await Request.Content.ReadAsMultipartAsync(provider);                    string newFileName = string.Empty;                    foreach (MultipartFileData file in provider.FileData)                    {                        newFileName = Path.GetFileName(file.LocalFileName);                        files.Add(newFileName);                    }                    return Request.CreateResponse(HttpStatusCode.OK, files);                }                catch (System.Exception e)                {                    return Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e);                }            }            else            {                string ResCode = "0002", Msg = "口令错误";                Dictionary<string, object> obj = new Dictionary<string, object>();                obj.Add("ResCode", ResCode);                obj.Add("Msg", Msg);                return Request.CreateResponse(HttpStatusCode.OK, obj);            }        }

public class CustomMultipartFormDataStreamProvider : MultipartFormDataStreamProvider    {        public CustomMultipartFormDataStreamProvider(string path) : base(path) { }        public override string GetLocalFileName(HttpContentHeaders headers)        {            //修改图片名称并返回            string newFileName = string.Empty;            newFileName = Path.GetExtension(headers.ContentDisposition.FileName.Replace("\"", string.Empty));//获取后缀名            newFileName = DateTime.Now.ToString("yyyyMMddHHmmss") + new Random().Next(0, 99999) + newFileName;            return newFileName;        }    }

上面两块代码就能实现图片批量上传功能，下面是测试接口的代码：

static void Main(string[] args)        {            using (var client = new HttpClient())            using (var content = new MultipartFormDataContent())            {                // Make sure to change API address                  client.BaseAddress = new Uri("http://localhost:18110/");                // Add first file content                   var fileContent1 = new ByteArrayContent(File.ReadAllBytes(@"C:\Users\y\Desktop\testImgUpload\wokechakandehuibao.jpg"));                fileContent1.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")                {                    FileName = "wokechakandehuibao.jpg"                };                // Add Second file content                  var fileContent2 = new ByteArrayContent(File.ReadAllBytes(@"C:\Users\y\Desktop\testImgUpload\xiezhoubaoFasongrenyuan.jpg"));                fileContent2.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")                {                    FileName = "xiezhoubaoFasongrenyuan.jpg"                };                content.Add(fileContent1);                content.Add(fileContent2);                // Make a call to Web API                  var result = client.PostAsync("/WebAppErpUser/PostUpload?Token=000000&Part=1", content).Result;                //HttpContent hc = result.Content;                result.Content.ReadAsStringAsync().ContinueWith((str) => { Console.WriteLine(str.Result); });//输出上传的图片名称（修改后的）                Console.WriteLine(result.StatusCode);                Console.ReadLine();            }        }

其实网上有很多上传图片的web api 代码，只是没有找到适合我的，结果到头来找到这段代码基本实现了我的需求，所以就用这个了，然后自己再改吧改吧，就这样了。

这一段代码是我在网上找的，具体在哪个网站找的我也忘了，其中添加了修改图片名称的功能，其他没啥，只为复制代码的同学提供方便。

注：如果原创者看到了这个博文，请原谅我没有记住你的名字，请原谅我没有收藏你的博客。

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