/// <summary> /// 返回验证码json /// </summary> public string GetVerificationCode() { Random rd = new Random(); _PositionX = rd.Next(_MinRangeX, _MaxRangeX); //设置X坐标 _PositionY = rd.Next(_MinRangeY, _MaxRangeY); //设置Y坐标 string Id = SetSql.Add(_PositionX.ToString()); //X坐标插入数据库(Y坐标给前台) int[] a = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 }; int[] array = a.OrderBy(x => Guid.NewGuid()).ToArray(); Bitmap bmp = new Bitmap(path + (new Random()).Next(0, _ImgNum - 1) + ".jpg"); string ls_small = "data:image/jpg;base64," + ImgToBase64String(cutImage(bmp, _shearSize, _shearSize, _PositionX, _PositionY)); Bitmap lb_normal = GetNewBitMap(bmp, _shearSize, _shearSize, _PositionX, _PositionY); string ls_confusion = "data:image/jpg;base64," + ImgToBase64String(ConfusionImage(array, lb_normal)); JObject jObject = new JObject(); jObject["errcode"] = 0; jObject["y"] = _PositionY; //Y坐标 jObject["array"] = string.Join(",", array); // jObject["imgx"] = _ImgWidth; //图片宽 jObject["imgy"] = _ImgHeight; //图片高 jObject["small"] = ls_small; //裁剪的小图 jObject["normal"] = ls_confusion; //裁剪小图后的原图 jObject["Id"] = Id; /* errcode: 状态值 成功为0 * y:裁剪图片y轴位置 * small:小图字符串 * normal:剪切小图后的原图并按无序数组重新排列后的图 * array:无序数组 * imgx:原图宽 * imgy:原图高 */ return(jObject.ToString()); }
/// <summary> /// 校验前端是否通过验证 /// </summary> public void CheckCode(HttpContext context) { context.Response.ContentType = "text/plain"; string ls_point = context.Request["point"]; //完成时x轴对于左上角位置位置 string datelist = context.Request["datelist"]; //滑动过程特征 string timespan = context.Request["timespan"]; //耗时 string Id = context.Request["Id"]; //ID编号,验证X坐标 string[] result = SetSql.Seach(Id).Split(','); //获取X坐标和错误次数 string code = result[0]; string code_errornum = result[1]; string token = result[2]; if (code == null) { WriteError(context, "发生错误"); return; } if (string.IsNullOrEmpty(ls_point)) { WriteError(context, "未获取到坐标值"); return; } int li_old_point = 0, li_now_point = 0; try { li_old_point = int.Parse(code); } catch { WriteError(context, "发生错误-1"); return; } try { li_now_point = int.Parse(ls_point); } catch { WriteError(context, "获取到的坐标值不正确"); return; } //错误 if (Math.Abs(li_old_point - li_now_point) > _deviationPx) { int li_count = 0; try { li_count = int.Parse(code_errornum); } catch { li_count = 0; } SetSql.AddErrorCount(Id);//增加错误次数 if (li_count > _MaxErrorNum) { //超过最大错误次数后不再校验 SetSql.Delete(Id, "false"); //HttpContext.Current.Session["code"] = null; Write(context, "{\"state\":-1,\"msg\":" + li_count + "}"); return; } //返回错误次数 Write(context, "{\"state\":-1,\"msg\":" + li_count + "}"); return; } if (SlideFeature(datelist)) { //机器人?? var ji = 2; } //校验成功 返回正确坐标 //HttpContext.Current.Session["isCheck"] = "OK"; //HttpContext.Current.Session["code_errornum"] = null; //HttpContext.Current.Session["code"] = null; SetSql.Delete(Id, "true"); Write(context, "{\"state\":0,\"info\":\"正确\",\"data\":" + li_old_point + ",\"token\":\"" + token + "\"}"); }