[ASP.NET]仿京东项目总结
来源:互联网 发布:c 编程输出九九乘法表 编辑:程序博客网 时间:2024/05/22 14:44
验证码的实现:
namespace jingdong.Verification_code{ public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["mathmod"] != null) { if (Request.QueryString["mathmod"] == "reg") { string temp = GenerateCheckCode(); Session["Verification_code"] = temp; this.CreateCheckCodeImage(temp); } else if (Request.QueryString["mathmod"] == "repwd") { string temp = GenerateCheckCode(); Session["repwd_Verification_code"] = temp; this.CreateCheckCodeImage(temp); } } } private string GenerateCheckCode() { int number; char code; string checkCode = String.Empty; System.Random random = new Random(); for (int i = 0; i < 5; i++) { number = random.Next(); if (number % 2 == 0) code = (char)('0' + (char)(number % 10)); else code = (char)('A' + (char)(number % 26)); checkCode += code.ToString(); } Response.Cookies.Add(new HttpCookie("CheckCode", checkCode)); return checkCode; } private void CreateCheckCodeImage(string checkCode) { if (checkCode == null || checkCode.Trim() == String.Empty) return; System.Drawing.Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * 12.5)), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的背景噪音线 for (int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.GreenYellow), x1, y1, x2, y2); } Font font = new System.Drawing.Font("Verdana", 10, (System.Drawing.FontStyle.Bold)); System.Drawing.Drawing2D.LinearGradientBrush 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 (int i = 0; i < 80; i++) { int x = random.Next(image.Width); int 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.Red), 0, 0, image.Width - 1, image.Height - 1); System.IO.MemoryStream ms = new System.IO.MemoryStream(); image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); Response.ClearContent(); Response.ContentType = "image/Gif"; Response.BinaryWrite(ms.ToArray()); } finally { g.Dispose(); image.Dispose(); } } }}
用户密码加密实现:
namespace jingdong{ public class Myencrypt : __encrypt__ { public string GetSha1(string str) { return Encryptions(str); } } public class __encrypt__ { /// <summary> /// 加密接口 /// </summary> /// <param name="str">要加密的字符串</param> /// <returns>返回加密以后的密文</returns> public string Encryptions(string str) { return encryptions(str); } /// <summary> /// 加密实现 /// </summary> /// <param name="str">要加密的字符串</param> /// <returns>如果加密成功,返回密文;否则返回空</returns> private string encryptions(string str) { if (!String.IsNullOrEmpty(str)) { return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, "SHA1").ToLower(); } else { return string.Empty; } } }}
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