protected void Page_Load(object sender, EventArgs e)
{
string FreshKey = Request["v"] == null ? "" : Request["v"].ToString();
if (HttpRuntime.Cache.Get(FreshKey) == null)
{
string ip = HttpContext.Current.Request.UserHostAddress;
string url = HttpContext.Current.Request.Url.ToString();
string urlRefer = (HttpContext.Current.Request.UrlReferrer == null) ? "" : HttpContext.Current.Request.UrlReferrer.ToString();
string via = HttpContext.Current.Request.ServerVariables["HTTP_VIA"];
ImageCode img = new ImageCode();
string gradeName = "基础级别";
string code = img.CreateVerifyCode();
var imageInfo = Create.GetVerifyCode(img, code, gradeName, ip, url, urlRefer, via);
HttpCookie cookie = new HttpCookie("VerifyCode");
cookie.Domain = ConfigurationManager.AppSettings["Verify_Cookie_Domain"];
cookie.Values.Add("key", imageInfo.Key);
cookie.Values.Add("gps", imageInfo.Gps);
cookie.Values.Add("validate", imageInfo.Validate);
HttpContext.Current.Response.Cookies.Add(cookie);
Response.ClearContent();
Response.ContentType = "image/Jpeg";
Response.BinaryWrite(imageInfo.Image);
HttpRuntime.Cache.Add(FreshKey, 1111, null, DateTime.Now.AddSeconds(0.5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.Normal, null);
}
}
/// <summary>
/// 获得新验证码
/// </summary>
/// <param name="value"></param>
/// <param name="ip"></param>
/// <returns></returns>
public static ImageInfo GetVerifyCode(ImageCode img, string code, string imageGrade, string ip, string url, string urlrefer, string via)
{
ImageInfo imageInfo = new ImageInfo();
imageInfo.Key = AddValue(code, ip);
string outputvia = "";
if (!string.IsNullOrEmpty(via))
outputvia = via + "viacheck";
imageInfo.Gps = ConfigurationManager.AppSettings["GPS"].Trim();
imageInfo.Validate = SimpleEncrypt.Md5(imageInfo.Key, imageInfo.Gps);
imageInfo.Key = SimpleEncrypt.EncryptString(imageInfo.Key, "yzm");
imageInfo.Gps = SimpleEncrypt.EncryptString(imageInfo.Gps, "yzm");
imageInfo.Image = img.CreateImageBytes(code);
return imageInfo;
}
