/// <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 + "\"}");
}