急找高手求解决，C#获取网页上的验证码显示到pictureBox上

Question

本人想获取这个网站上的验证码显示在我的pictureBox控件上， ｈｔｔｐ：／／ｗｗｗ．ｓｃｊｊ．ｇｏｖ．ｃｎ：８６３５有能解决的请把代码发到我的邮箱[email protected]里面，谢谢~~谢谢~

Answer 1

你看看img的连接，直接用webclient就可以下载

Answer 2

1.得到image的路径(路径中可能有一些可变的参数,还有cookie必须带上)
2.下载,或直接以流的形式获取然后转换成图片
3.....

Answer 3

http://www.scjj.gov.cn:8635/indexBitmap.aspx?flagPassword=0.6666577417182393
参数flagPassword后面是随机数,获取时要带上COOKIES

Answer 4

cookie的内容不全,你抓包看下

Answer 5

直接用httpwebrequest访问：http://www.scjj.gov.cn:8635/indexBitmap.aspx?flagPassword=0.7081168430247833
这个地址的就可以了，flagPassword是一个0-1的随机数。
注意:
httpWebRequest.Referer = "image/png, image/svg+xml, image/*;q=0.8, */*;q=0.5";

Answer 6

        public static Stream GetStream(string url, CookieContainer cookieContainer)
        {
            HttpWebRequest httpWebRequest = null;
            HttpWebResponse httpWebResponse = null;            try
            {
                httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
                httpWebRequest.CookieContainer = cookieContainer;
                httpWebRequest.ContentType = contentType;
                httpWebRequest.Referer = referer;
                httpWebRequest.Accept = accept;
                httpWebRequest.UserAgent = userAgent;
                httpWebRequest.Method = "GET";
                httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;                httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                Stream responseStream = httpWebResponse.GetResponseStream();                return responseStream;
            }
            catch (Exception)
            {
                return null;
            }
        }上楼敲错了。

Answer 7

一般网站的验证码都是用js回传的你找到这个网站的JS ，在JS 内有验证码的url，获取url把图片下载到本地，在传给PicterusBox

Answer 8

 private void GetImg()
        {
            var httpWebRequest = (HttpWebRequest)HttpWebRequest.Create("http://www.scjj.gov.cn:8635/indexBitmap.aspx?flagPassword=0.5209738658265561");
            httpWebRequest.Credentials = CredentialCache.DefaultCredentials;
            httpWebRequest.ContentType = "application/x-www-form-urlencoded";
            httpWebRequest.Accept = "image/png,image/*;q=0.8,*/*;q=0.5";
            httpWebRequest.Host = "www.scjj.gov.cn:8635";
            httpWebRequest.Referer = "http://www.scjj.gov.cn:8635/";
            httpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; CIBA; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; .NET4.0C; .NET4.0E)";
            httpWebRequest.Method = "Get";
            var webResponse = (HttpWebResponse)httpWebRequest.GetResponse();
            using (var getStream=webResponse.GetResponseStream())
            {
                int num;
                using (var ms = new MemoryStream())
                {
                    byte[] buffer = new byte[0x400];
                    do
                    {
                        num = getStream.Read(buffer, 0, buffer.Length);
                        if (num > 0)
                        {
                            ms.Write(buffer, 0, num);
                        }
                    } while (num > 0);
                    picCode.Image = System.Drawing.Image.FromStream(ms);
                }
            }
        }