c# API接受图片文件以Base64格式上传图片

Base64图片上传实现

最新推荐文章于 2024-09-21 23:30:38 发布

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最新推荐文章于 2024-09-21 23:30:38 发布

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文章标签： c# 测试

原文链接：http://www.cnblogs.com/feizianquan/p/9600446.html

本文介绍了一种使用Base64编码的图片上传方法，通过将Base64字符串转换为流并利用HttpClient进行POST请求，实现了图片的远程上传。文章详细展示了如何处理Base64字符串，创建MultipartFormDataContent，并发送包含图片流的请求。

 /// base64上传图片
        /// </summary> 
        /// <returns>成功上传返回上传后的文件名</returns>
        [HttpPost]
        public async Task<IHttpActionResult> UpLoadImageBase64()
        {
            HttpContextBase context = (HttpContextBase)Request.Properties["MS_HttpContext"];
            string text = context.Request.Form["file"];

            Stream stream = new MemoryStream(Convert.FromBase64String(text.Split(',')[1]));
            using (HttpClient client = new HttpClient())
            {
                var request = new HttpRequestMessage(HttpMethod.Post, ConfigurationManager.AppSettings["Imgaes"].ToString() + "/Upload");
                var content = new MultipartFormDataContent();

                //client.DefaultRequestHeaders.Add("fileext", HttpContext.Request.Headers["fileext"]);
                content.Add(new StreamContent(stream), "file", "file.jpg");
                request.Content = content;
                var response = await client.SendAsync(request);
                response.EnsureSuccessStatusCode();
                var filenamestr = await response.Content.ReadAsStringAsync();//返回结果
            }
            return Ok();
        }