public async Task <IActionResult> CheckLogin(LoginModel loginModel)
{
var messages = new Messages();
if (loginModel != null &&
loginModel.UserName.IsNotNullOrEmpty() &&
loginModel.UserPwd.IsNotNullOrEmpty() &&
loginModel.UserCode.IsNotNullOrEmpty())
{
if (MD5Encrypt.MD5By16(loginModel.UserCode.ToLower()) != webHelper.GetStrSession(loginModel.UserCode.ToUpper()))
{
messages.Msg = "验证码错误，请重新输入";
}
else
{
var result = await adminSvc.Login(loginModel.UserName, loginModel.UserPwd);
if (result.Succeeded)
{
//记住登录凭证
var claims = new List <Claim>
{
//用户编号||用户名
new Claim(ClaimTypes.Name, result.UserId.ToString() + "|||" + loginModel.UserName)
};
ClaimsIdentity userIdentity = new ClaimsIdentity(claims, "login");
ClaimsPrincipal principal = new ClaimsPrincipal(userIdentity);
//添加身份认证
await HttpContext.SignInAsync(principal);
//缓存权限
//userCacheService.SetPermissionCache(result.UserId);
}
messages.Success = result.Succeeded;
messages.Msg = result.Msg;
}
}
else
{
messages.Msg = "请填写完整";
}
return(Json(messages));
}
private byte[] SetCaptch()
{
int codeW = 80;
int codeH = 30;
int fontSize = 16;
string chkCode = string.Empty;
//颜色列表，用于验证码、噪线、噪点
Color[] color = { Color.Black, Color.Red, Color.Blue, Color.Green, Color.Orange, Color.Brown, Color.Brown, Color.DarkBlue };
//字体列表，用于验证码
string[] font = { "Times New Roman" };
//验证码的字符集，去掉了一些容易混淆的字符
char[] character = { '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'd', 'e', 'f', 'h', 'k', 'm', 'n', 'r', 'x', 'y', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W', 'X', 'Y' };
Random rnd = new Random();
//生成验证码字符串
for (int i = 0; i < 4; i++)
{
chkCode += character[rnd.Next(character.Length)];
}
//写入Session、验证码加密
httpContextAccessor.HttpContext.Session.SetString(chkCode.ToUpper(), MD5Encrypt.MD5By16(chkCode.ToLower()));
//创建画布
Bitmap bmp = new Bitmap(codeW, codeH);
Graphics g = Graphics.FromImage(bmp);
g.Clear(Color.White);
//画噪线
for (int i = 0; i < 3; i++)
{
int x1 = rnd.Next(codeW);
int y1 = rnd.Next(codeH);
int x2 = rnd.Next(codeW);
int y2 = rnd.Next(codeH);
Color clr = color[rnd.Next(color.Length)];
g.DrawLine(new Pen(clr), x1, y1, x2, y2);
}
//画验证码字符串
for (int i = 0; i < chkCode.Length; i++)
{
string fnt = font[rnd.Next(font.Length)];
Font ft = new Font(fnt, fontSize);
Color clr = color[rnd.Next(color.Length)];
g.DrawString(chkCode[i].ToString(), ft, new SolidBrush(clr), (float)i * 18, (float)0);
}
//将验证码图片写入内存流，并将其以 "image/Png" 格式输出
MemoryStream ms = new MemoryStream();
try
{
bmp.Save(ms, ImageFormat.Png);
return(ms.ToArray());
}
catch (Exception)
{
return(null);
}
finally
{
g.Dispose();
bmp.Dispose();
}
}
