/// <summary> /// 图形验证码 /// </summary> /// <returns></returns> public IActionResult ValidateCode() { string code = ""; MemoryStream ms = VierificationCodeServices.Create(out code); HttpContext.Session.SetString("LoginValidateCode", code); Response.Body.Dispose(); return(File(ms.ToArray(), @"image/png")); }
/// <summary> /// 图形验证码 /// </summary> /// <returns></returns> public IActionResult GenYZM([FromServices] VierificationCodeServices _vierificationCodeServices) { string code = ""; System.IO.MemoryStream ms = _vierificationCodeServices.CreateYZM(out code); HttpContext.Session.SetString("Code", code); Response.Body.Dispose(); return(File(ms.ToArray(), @"image/png")); }
public HttpResponseMessage CreateCheckCodeImage() { HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK); string checkCode = VierificationCodeServices.RndNum(); var image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22); //12.5 22 var g = Graphics.FromImage(image); try { //生成随机生成器 var random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的背景噪音线 for (var i = 0; i < 25; i++) { var x1 = random.Next(image.Width); var x2 = random.Next(image.Width); var y1 = random.Next(image.Height); var y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } var font = new System.Drawing.Font("Arial", 12, (System.Drawing.FontStyle.Bold | System.Drawing.FontStyle.Italic)); var brush = new System.Drawing.Drawing2D.LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); g.DrawString(checkCode, font, brush, 2, 2); //画图片的前景噪音点 for (var i = 0; i < 100; i++) { var x = random.Next(image.Width); var y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); var ms = new System.IO.MemoryStream(); image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); result.Content = new ByteArrayContent(ms.ToArray()); result.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("image/Gif"); Common.Cookie.setcookieCode("Code", checkCode, 5); return(result); } finally { g.Dispose(); image.Dispose(); } }
public ActionResult GetVerificationCode() { string code = string.Empty; MemoryStream ms = VierificationCodeServices.Create(out code); TempData[VerificationCode] = code; Response.Body.Dispose(); byte[] bytes = ms.ToArray(); ms.Dispose(); return(File(bytes, @"image/png")); }