/// <summary> /// 创建验证码图片 /// </summary> /// <param>验证码字符串</param> /// <param>图片宽度</param> /// <param>图片长度</param> /// <returns>图片</returns> public static Bitmap CreateVerificationImage(string verificationText, int width, int height) { Pen _pen= new Pen(Color.Black); Font _font = new Font("Arial", 14, FontStyle.Bold); Brush _brush = null; Bitmap _bitmap = new Bitmap(width,height); Graphics _g = Graphics.FromImage(_bitmap); SizeF _totalSizeF = _g.MeasureString(verificationText,_font); SizeF _curCharSizeF; PointF _startPointF = new PointF((width-_totalSizeF.Width)/2,(height-_totalSizeF.Height)/2); //随机数产生器 Random _random =new Random(); _g.Clear(Color.White); for(int i=0;i<verificationText.Length;i++) { _brush = new LinearGradientBrush(new Point(0,0),new Point(1,1),Color.FromArgb(_random.Next(255),_random.Next(255),_random.Next(255)),Color.FromArgb(_random.Next(255),_random.Next(255),_random.Next(255))); _g.DrawString(verificationText[i].ToString(),_font,_brush,_startPointF); _curCharSizeF = _g.MeasureString(verificationText[i].ToString(),_font); _startPointF.X+= _curCharSizeF.Width; } _g.Dispose(); return _bitmap; }
User控制器action中保存验证码并返回图片
首先添加User控制器，在Member区域中添加控制器UserController。在控制器中写一个VerificationCode方法。过程是：在方法中我们先创建6位验证码字符串->使用CreateVerificationImage创建验证码图片->把图片写入OutputStream中->把验证码字符串写入TempData中。
保存在TempData中和Session中的区别：TempData只传递一次，也就是传递到下一个action后，action代码执行完毕就会销毁，Session会持续保存，所以验证码用TempData比较合适。
/// <summary> /// 验证码 /// </summary> /// <returns></returns> public ActionResult VerificationCode() { string verificationCode = Security.CreateVerificationText(6); Bitmap _img = Security.CreateVerificationImage(verificationCode, 160, 30); _img.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg); TempData["VerificationCode"] = verificationCode.ToUpper(); return null; }
我们看看生成图验证码效果：
2、Sha256加密
在COmmon项目的Security类中添加静态方法Sha256(string plainText)
/// <summary> /// 256位散列加密 /// </summary> /// <param>明文</param> /// <returns>密文</returns> public static string Sha256(string plainText) { SHA256Managed _sha256 = new SHA256Managed(); byte[] _cipherText = _sha256.ComputeHash(Encoding.Default.GetBytes(plainText)); return Convert.ToBase64String(_cipherText); }
四、注册
在Ninesky.Web.Areas.Member.Models中添加注册视图模型
using System.ComponentModel.DataAnnotations; namespace Ninesky.Web.Areas.Member.Models { public class RegisterViewModel { /// <summary> /// 用户名 /// </summary> [Required(ErrorMessage = "必填")] [StringLength(20, MinimumLength = 4, ErrorMessage = "{2}到{1}个字符")] [Display(Name = "用户名")] public string UserName { get; set; } /// <summary> /// 显示名 /// </summary> [Required(ErrorMessage = "必填")] [StringLength(20, MinimumLength = 2, ErrorMessage = "{2}到{1}个字符")] [Display(Name = "显示名")] public string DisplayName { get; set; } /// <summary> /// 密码 /// </summary> [Required(ErrorMessage = "必填")] [Display(Name = "密码")] [StringLength(20,MinimumLength=6,ErrorMessage="{2}到{1}个字符")] [DataType(DataType.Password)] public string Password { get; set; } /// <summary> /// 确认密码 /// </summary> [Required(ErrorMessage = "必填")] [Compare("Password", ErrorMessage = "两次输入的密码不一致")] [Display(Name = "确认密码")] [DataType(DataType.Password)] public string ConfirmPassword { get; set; } /// <summary> /// 邮箱 /// </summary> [Required(ErrorMessage = "必填")] [Display(Name = "邮箱")] [DataType(DataType.EmailAddress,ErrorMessage="Email格式不正确")] public string Email { get; set; } /// <summary> /// 验证码 /// </summary> [Required(ErrorMessage = "必填")] [StringLength(6, MinimumLength = 6, ErrorMessage = "验证码不正确")] [Display(Name = "验证码")] public string VerificationCode { get; set; } } }
在UserController中添加Register() action ,并返回直接返回强类型(RegisterViewModel)视图
/// <summary> /// 注册 /// </summary> /// <returns></returns> public ActionResult Register() { return View(); }
视图