C#HttpClientPost参数同时上传文件的实现

目录

• HttpClient Post参数同时上传文件
• Demo 如下
• HttpClient上传文件到服务器(multipart/form-data)

HttpClient Post参数同时上传文件

Demo 如下

using (var client = new HttpClient()){    using (var multipartFormDataContent = new MultipartFormDataContent())    {        var values = new[]        {            new KeyValuePair<string, string>("c", "3"),            new KeyValuePair<string, string>("c", "2"),            new KeyValuePair<string, string>("d", "2")             //other values        };         foreach (var keyValuePair in values)        {            multipartFormDataContent.Add(new StringContent(keyValuePair.Value),                String.Format("\"{0}\"", keyValuePair.Key));        }         multipartFormDataContent.Add(new ByteArrayContent(System.IO.File.ReadAllBytes(@"D:\test.jpg")),            "\"pic\"",            "\"test.jpg\"");         var requestUri = "http://localhost:8080";        var html = client.PostAsync(requestUri, multipartFormDataContent).Result.Content.ReadAsStringAsync().Result;    }}

HttpClient上传文件到服务器(multipart/form-data)

string reqUrl = JsonrpcHttpClient.MakeRpcUrl(typeof(Wfm_SimReport).Name, "save");using (HttpClient client = new HttpClient(new HttpClientHandler() { UseCookies = false }))//若想手动设置Cookie则必须设置UseCookies = false{                                   string boundary = string.Format("----WebKitFormBoundary{0}",DateTime.Now.Ticks.ToString("x"));    MultipartFormDataContent content = new MultipartFormDataContent(boundary);     #region 设置请求参数    content.Headers.ContentType = MediaTypeHeaderValue.Parse("multipart/form-data");    content.Headers.Add("Cookie", TokenManager.Token);    content.Headers.Add("client", "true");     #endregion    if (string.IsNullOrEmpty(fullPath) && !File.Exists(fullPath))    {        return false;    }     string fileName = Path.GetFileName(fullPath);     #region Stream请求    FileStream fStream = File.Open(fullPath, FileMode.Open, FileAccess.Read);    content.Add(new StreamContent(fStream, (int)fStream.Length), "file", fileName);                    #endregion    content.Add(new StringContent(JsonHelper.Serialize(entity)), "dtoStr");    var result = client.PostAsync(reqUrl, content).Result;     try    {        if (result.IsSuccessStatusCode)        {            string rslt = result.Content.ReadAsStringAsync().Result;            Debug.WriteLine(rslt);            return true;        }    }    catch (Exception ex)    {        Debug.WriteLine(string.Format("获取服务器返回结果错误：消息：{0},堆栈：{1}",ex.Message,ex.StackTrace));    }    finally    {        //关闭文件流        fStream.Close();        client.Dispose();    }                 }

以上为个人经验，希望能给大家一个参考，也希望大家多多支持本站。