cookie

CookieContainer cookies = new CookieContainer(); HttpClientHandler handler = new HttpClientHandler(); handler.CookieContainer = cookies; HttpClient http = new HttpClient(handler);

獲得登陸需要的流水號

var url = new Uri("https://passport.csdn.net/account/login"); http.DefaultRequestHeaders.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"); //http.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate, br"); http.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Language", "zh-CN,zh;q=0.8"); http.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36"); handler.UseCookies = true; handler.AllowAutoRedirect = true; string str = await http.GetStringAsync(url); Regex regex = new Regex(" type="hidden" name="lt" value="([\w|\-]+)""); var lt = regex.Match(str).Groups[1].Value; regex = new Regex("type="hidden" name="execution" value="(\w+)""); var execution = regex.Match(str).Groups[1].Value;

登陸

str = $"username={account.UserName}&password={account.Key}<={lt}&execution={execution}&_eventId=submit"; str = str.Replace("@", "%40"); HttpContent content = new StringContent(str, Encoding.UTF8); str = await content.ReadAsStringAsync(); content=new FormUrlEncodedContent(new List>() { new KeyValuePair("username",account.UserName),//.Replace("@", "%40")), new KeyValuePair("password",account.Key), new KeyValuePair("lt",lt), new KeyValuePair("execution",execution), new KeyValuePair("_eventId","submit") }); str = await content.ReadAsStringAsync(); str = await (await http.PostAsync(url, content)).Content.ReadAsStringAsync();

查看登陸

url = new Uri(““);
str = await http.GetStringAsync(url);

上傳文件

content = new MultipartFormDataContent(); ((MultipartFormDataContent)content).Headers.Add("name", "file1"); ((MultipartFormDataContent)content).Headers.Add("filename", "20170114120751.png"); var stream = new StreamContent(await File.OpenStreamForReadAsync()); ((MultipartFormDataContent)content).Add(stream); str = await ((MultipartFormDataContent)content).ReadAsStringAsync(); url = new Uri("http://write.blog.csdn.net/article/UploadImgMarkdown?parenthost=write.blog.csdn.net"); var message = await http.PostAsync(url, content); if (message.StatusCode == HttpStatusCode.OK) { ResponseImage(message); } private async void ResponseImage(HttpResponseMessage message) { using (MemoryStream memoryStream = new MemoryStream()) { int length = 1024; byte[] buffer = new byte[length]; using (GZipStream zip = new GZipStream(await message.Content.ReadAsStreamAsync(), CompressionLevel.Optimal)) { int n; while ((n = zip.Read(buffer, 0, length)) > 0) { memoryStream.Write(buffer, 0, n); } } using (StreamReader stream = new StreamReader(memoryStream)) { string str = stream.ReadToEnd(); } } }
使用 WebView 模擬登陸 csdn

下面給大家一個叫簡單方法模擬登陸csdn

GeekWebView.Navigate(newUri("http://passport.csdn.net/")); GeekWebView.NavigationCompleted += OnNavigationCompleted; F =async() => {varfunctionString =string.Format(@"document.getElementsByName('username')[0].value='{0}';","lindexi_gd@163.com");awaitGeekWebView.InvokeScriptAsync("eval",newstring[] { functionString }); functionString =string.Format(@"document.getElementsByName('password')[0].value='{0}';","密碼");awaitGeekWebView.InvokeScriptAsync("eval",newstring[] { functionString }); functionString =string.Format(@"document.getElementsByClassName('logging')[0].click();");awaitGeekWebView.InvokeScriptAsync("eval",newstring[] { functionString }); };privateAction F {set;get; }privatevoidOnNavigationCompleted(WebView sender, WebViewNavigationCompletedEventArgs args) { F(); }

當然，這時需要修改登陸信息，我上面寫的是我的。如果遇到有驗證碼，那么這個方法是不可使用，因為輸入驗證碼暫時還沒法做。