public async Task <bool> SendVerificationCodeAsync(string phoneNumber, VerificationCodeType type, string data = null)
{
string code = GenerateCode();
bool isTestMode = phoneNumber.StartsWith("+4475555");
var verificationToken = new VerificationToken
{
CreateDate = DateTime.UtcNow,
TokenHash = _hashService.GetHash(isTestMode ? "1111" : code),
PhoneNumber = phoneNumber,
Type = type,
Data = data
};
_unitOfWork.Repository <VerificationToken>().Insert(verificationToken);
_unitOfWork.SaveChanges();
if (!isTestMode)
{
await SendMessageAsync(phoneNumber, $"Your verification code: {code}");
}
_logger.LogError($"Your verification code: {code}");
return(true);
}
/// <summary>
/// 获取验证码缓存key
/// </summary>
/// <param name="accountName">用户登录名</param>
/// <param name="type">类型</param>
/// <param name="systemCode">系统code</param>
/// <returns></returns>
public static string GetVerificationCodeRedisKey(string accountName, VerificationCodeType type, string systemCode)
{
return($"{systemCode}:VerificationCode:{type.ToString()}:{accountName}");
}
public VerificationCode(string accountName, VerificationCodeType type)
{
Type = type;
AccountName = accountName;
Code = GetRandCode(6);
}
public async Task <bool> SendVerificationCodeAsync(ApplicationUser user, string phoneNumber, VerificationCodeType type, string data = null)
{
string code = GenerateCode();
bool isTestMode = phoneNumber.StartsWith("+4475555");
user.VerificationTokens.ToList().ForEach(x => _unitOfWork.Repository <VerificationToken>().Delete(x));
user.VerificationTokens.Add(new VerificationToken
{
CreateDate = DateTime.UtcNow,
TokenHash = _hashService.GetHash(isTestMode ? "1111" : code),
PhoneNumber = phoneNumber,
Type = type,
Data = data
});
_unitOfWork.Repository <ApplicationUser>().Update(user);
_unitOfWork.SaveChanges();
if (!isTestMode)
{
await SendMessageAsync(phoneNumber, $"Your verification code: {code}");
}
_logger.LogError($"Your verification code: {code}");
return(true);
}
/// <summary>
/// 生成验证码
/// </summary>
/// <param name="code"></param>
/// <param name="type"></param>
/// <param name="length"></param>
/// <returns></returns>
public MemoryStream Create(out string code, VerificationCodeType type = VerificationCodeType.Number, int length = 4)
{
switch (type)
{
case VerificationCodeType.Number:
code = GetRandomForNumber(length);
break;
case VerificationCodeType.Letter:
code = GetRandomForLetter(length);
break;
case VerificationCodeType.NumberAndLetter:
code = GetRandomForNumberAndLetter(length);
break;
case VerificationCodeType.Hanzi:
code = GetRandomForHanzi(length);
break;
default:
throw new ArgumentOutOfRangeException(nameof(type), type, null);
}
var random = new Random();
// 验证码颜色集合
Color[] c = { Color.Black, Color.Red, Color.DarkBlue, Color.Green, Color.Orange, Color.Brown, Color.DarkCyan, Color.Purple };
// 验证码字体集合
string[] fonts = { "Verdana", "Microsoft Sans Serif", "Comic Sans MS", "Arial", "宋体" };
// 定义图像的大小，生成图像的实例
var img = new Bitmap(code.Length * 18, 32);
var g = Graphics.FromImage(img);
g.Clear(Color.White); // 背景设为白色
// 在随机位置画背景点
for (var i = 0; i < 100; i++)
{
var x = random.Next(img.Width);
var y = random.Next(img.Height);
g.DrawRectangle(new Pen(Color.LightGray, 0), x, y, 1, 1);
}
// 验证码绘制在g中
for (var i = 0; i < code.Length; i++)
{
var cindex = random.Next(7); // 随机颜色索引值
var findex = random.Next(5); // 随机字体索引值
var f = new Font(fonts[findex], 15, FontStyle.Bold); // 字体
Brush b = new SolidBrush(c[cindex]); // 颜色
var ii = 4;
if ((i + 1) % 2 == 0) // 控制验证码不在同一高度
{
ii = 2;
}
g.DrawString(code.Substring(i, 1), f, b, 3 + (i * 12), ii); // 绘制一个验证字符
}
var ms = new MemoryStream();
img.Save(ms, ImageFormat.Png);// 将此图像以Png图像文件的格式保存到流中
//回收资源
g.Dispose();
img.Dispose();
return(ms);
}
