JDHY/客户端/齐越慧眼/齐越慧眼/Helpers/JdApiHelper.cs

using Newtonsoft.Json.Linq;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Windows;

namespace 齐越慧眼.Helpers
{
    public class JdApiHelper
    {
        string boundary = "";


        private  string HttpPostData(string url, string cookie, byte[] files, string fileKeyName="file")
        {
            string responseContent;
            var memStream = new MemoryStream();
            var webRequest = (HttpWebRequest)WebRequest.Create(url);
            // 边界符
            var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
            // 边界符
            var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");

            // 最后的结束符
            var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");

            // 设置属性
            webRequest.Method = "POST";
            webRequest.ContentType = "multipart/form-data; boundary=" + boundary;

            // 写入文件
            const string filePartHeader =
                "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
                 "Content-Type: image/jpeg\r\n\r\n";
            var header = string.Format(filePartHeader, fileKeyName, "aaa.jpg");
            var headerbytes = Encoding.UTF8.GetBytes(header);

            memStream.Write(beginBoundary, 0, beginBoundary.Length);
            memStream.Write(headerbytes, 0, headerbytes.Length);

            memStream.Write(files);

            //// 写入字符串的Key
            //var stringKeyHeader = "\r\n--" + boundary +
            //                       "\r\nContent-Disposition: form-data; name=\"{0}\"" +
            //                       "\r\n\r\n{1}\r\n";

            //foreach (byte[] formitembytes in from string key in stringDict.Keys
            //                                 select string.Format(stringKeyHeader, key, stringDict[key])
            //                                     into formitem
            //                                 select Encoding.UTF8.GetBytes(formitem))
            //{
            //    memStream.Write(formitembytes, 0, formitembytes.Length);
            //}

            // 写入最后的结束边界符
            memStream.Write(endBoundary, 0, endBoundary.Length);

            webRequest.ContentLength = memStream.Length;

            var requestStream = webRequest.GetRequestStream();

            memStream.Position = 0;
            var tempBuffer = new byte[memStream.Length];
            memStream.Read(tempBuffer, 0, tempBuffer.Length);
            memStream.Close();

            requestStream.Write(tempBuffer, 0, tempBuffer.Length);
            requestStream.Close();

            webRequest.Headers.Add("cookie", cookie);
            webRequest.Headers.Add("origin", "https://www.jd.com");
            webRequest.Headers.Add("referer", "https://www.jd.com");
            webRequest.Headers.Add("sec-fetch-dest", "iframe");
            webRequest.Headers.Add("sec-fetch-mode", "navigate");
            webRequest.Headers.Add("sec-fetch-site", "same-site");
            webRequest.Headers.Add("sec-fetch-user", "?1");
            webRequest.Headers.Add("upgrade-insecure-requests", "1");
            webRequest.Headers.Add("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
            webRequest.Headers.Add("accept-encoding", " deflate, br");
            webRequest.Headers.Add("accept-language", "zh-CN,zh;q=0.9");
            webRequest.Headers.Add("cache-control", "no-cache");

            var httpWebResponse = (HttpWebResponse)webRequest.GetResponse();

            using (var httpStreamReader = new StreamReader(httpWebResponse.GetResponseStream(),
                                                            Encoding.GetEncoding("utf-8")))
            {
                responseContent = httpStreamReader.ReadToEnd();
            }

            httpWebResponse.Close();
            webRequest.Abort();

            return responseContent;
        }

        public string UploadFile(byte[] file, string cookie)
        {
            // 边界符  
            var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
            var b = GetFileData("upload.jpg", new MemoryStream(file), boundary: boundary);
       //     return HttpPostData("https://search.jd.com/image?op=upload", cookie, file);
            //return "";

            using (System.Net.WebClient webClient = new System.Net.WebClient())
            {
                try
                {
                    webClient.Headers.Add("cookie", cookie);
                    webClient.Headers.Add("origin", "https://www.jd.com");
                    webClient.Headers.Add("referer", "https://www.jd.com");
                    webClient.Headers.Add("sec-fetch-dest", "iframe");
                    webClient.Headers.Add("sec-fetch-mode", "navigate");
                    webClient.Headers.Add("sec-fetch-site", "same-site");
                    webClient.Headers.Add("sec-fetch-user", "?1");
                    webClient.Headers.Add("upgrade-insecure-requests", "1");
                    webClient.Headers.Add("accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9");
                    webClient.Headers.Add("accept-encoding", " deflate, br");
                    webClient.Headers.Add("accept-language", "zh-CN,zh;q=0.9");
                    webClient.Headers.Add("cache-control", "no-cache");

                    webClient.Headers.Add("content-type", $"multipart/form-data; boundary={boundary}");


                    var result = webClient.UploadData("https://search.jd.com/image?op=upload", b.ToArray());
                    
                    string json = Encoding.Default.GetString(result);

                    return json;
                }
                catch(WebException ex) 
                {
                    string responseText;

                    using (var reader = new StreamReader(ex.Response.GetResponseStream()))
                    {
                        responseText = reader.ReadToEnd();
                    }

                    MessageBox.Show(responseText);
                    WpfNoticeMsg.NoticeMessage.Show("请退出重新登录京东后重试！");
                }
            }
            return string.Empty;
        }



        public static MemoryStream GetFileData(string fileName, MemoryStream file, string fileKeyName = "file", string boundary = "")
        {


            MemoryStream memStream = new MemoryStream();

            // 边界符  
            var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
            // 最后的结束符  
            var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");


            //// 写入字符串的Key  
            //var stringKeyHeader = "--" + boundary +
            //                        "\r\nContent-Disposition: form-data; name=\"{0}\"" +
            //                        "\r\n\r\n{1}\r\n";


            // 写入文件  
            const string filePartHeader =
                "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
                    "Content-Type: image/jpeg\r\n\r\n";
            var header = string.Format(filePartHeader, fileKeyName, fileName);
            var headerbytes = Encoding.UTF8.GetBytes(header);

            memStream.Write(beginBoundary, 0, beginBoundary.Length);
            memStream.Write(headerbytes, 0, headerbytes.Length);

            var buffer = new byte[1024];
            int bytesRead; // =0  
            file.Seek(0, SeekOrigin.Begin);
            while ((bytesRead = file.Read(buffer, 0, buffer.Length)) != 0)
            {
                memStream.Write(buffer, 0, bytesRead);
            }

            // 写入换行  
            var contentLine = Encoding.ASCII.GetBytes("\r\n");
            memStream.Write(contentLine, 0, contentLine.Length);

            // 写入最后的结束边界符  
            memStream.Write(endBoundary, 0, endBoundary.Length);



            memStream.Position = 0;
            return memStream;
            //memStream.Close();


            //requestStream.Close();

        }
    }
}