/// <summary>
/// 将生成验证码的代码拆分成若干个方法，并为其添加异常机制，要求能够：o显式的抛出一个自定义异常
/// 捕获并包裹一个被抛出的异常，记入日志文件，然后再次抛出，o根据不同的异常，给用户相应的友好的异常提示
/// 使用using释放文件资源
/// </summary>
public static void CaptchaInsertException(string custom = null)//需要自己传入一个验证码，要求不得大于4个字符
{
//主方法，生成画布添加背景颜色
Bitmap image = new Bitmap(200, 100);
Graphics drawing = Graphics.FromImage(image);
drawing.Clear(Color.White);
//添加随机种子
Random random = new Random();
//生成背景像素点
Captcha.captchaBackGroundPixel(image, random);
//生成背景干扰线条
Captcha.captchaBackgroundDrawing(drawing, random);
//为了捕获异常特意声明的一个Try catch
try
{
if (custom.Length > 4)
{//自定义的异常
throw new HomeworkException("传入的验证码请不要超过4个字符");
}
else
{//输入正确就跑到正常的执行手段里面去。
Captcha.captchaMaker(random, drawing, image, custom);
}
}
catch (HomeworkException Record)
{
string path = @"C:\Users\Administrator\source\repos\luckstack3\Captcha\Log.txt";
using (StreamWriter writer = File.AppendText(path))
{
DateTime date = DateTime.Now;//设置日志时间
string time = date.ToString("yyyy-MM-dd HH:mm:ss");
//日志存放
//writer = File.AppendText(path);
writer.WriteLine("异常时间" + time);
writer.WriteLine("异常对象" + Record.Source);
writer.WriteLine("调用堆栈" + Record.StackTrace.Trim());
writer.WriteLine("调用堆栈" + Record.ToString());
writer.Flush();
}
//重新抛出
throw new HomeworkException("传入的验证码请不要超过4个字符");
}
catch (Exception)
{
throw new Exception("正确传入4个字符的自定义验证码");
}
//生成随机验证码
Captcha.captchaMaker(random, drawing, image);
//存储图片
image.Save(@"C:\Users\Administrator\source\repos\luckstack3\Captcha\Captcha.jpg", ImageFormat.Jpeg);
}
static void Main(string[] args)
{
EmailSettle emailSettle = new EmailSettle(@"C:\Users\Administrator\source\repos\luckstack3\Captcha\Email.txt");
emailSettle.GetEmail();
Captcha.RefreshCaptcha();
#region 2020.4.16异步作业
Captcha.CaptchaAsync();
//重构之前的验证码作业：
//1.创建一个新的前台线程（Thread），在这个线程上运行生成随机字符串的代码
//Thread thread = new Thread(new ThreadStart(Captcha.RefreshCaptcha));
//Bitmap image = new Bitmap(200, 100); ;
//Graphics drawing;
//Random random = new Random();
//int random_0_To_200 = random.Next(0, 200);
//int random_0_To_100 = random.Next(0, 100);
////2.在一个任务（Task）中生成画布
//Action draingMap = () =>
//{
// Console.WriteLine("当前线程ID是： " + Thread.CurrentThread.ManagedThreadId);
// drawing = Graphics.FromImage(image);
//};
//Task task = new Task(draingMap);
/////3.使用生成的画布，用两个任务完成：
/////1.在画布上添加干扰线条
/////2.在画布上添加干扰点
/////
//Parallel.Invoke(() =>
//{
// Console.WriteLine("当前线程ID是： " + Thread.CurrentThread.ManagedThreadId);
// for (int i = 0; i < 200; i++)
// {
// image.SetPixel(random_0_To_200, random_0_To_200, Color.BurlyWood);
// image.SetPixel(random_0_To_200, random_0_To_200, Color.IndianRed);
// image.SetPixel(random_0_To_200, random_0_To_200, Color.DarkCyan);
// image.SetPixel(random_0_To_200, random_0_To_200, Color.DarkViolet);
// }
//},
//() =>
//{
// drawing = Graphics.FromImage(image);
// for (int i = 0; i < 25; i++)
// {
// Console.WriteLine("当前线程ID是： " + Thread.CurrentThread.ManagedThreadId);
// drawing.DrawCurve(new Pen(new SolidBrush(Color.Gray), 1),
// new Point[] {
// new Point(random_0_To_200,random_0_To_100),
// new Point(random_0_To_200,random_0_To_200),
// new Point(random_0_To_200, random_0_To_100) });
// drawing.DrawCurve(new Pen(new SolidBrush(Color.Chocolate), 1),
// new Point[] {
// new Point(random_0_To_200,random_0_To_100),
// new Point(random_0_To_200,random_0_To_200),
// new Point(random_0_To_200, random_0_To_100) });
// }
//});
////随机验证码。
//string subCaptcha = "1234567890QAZWSXEDCRFVTGBYHNUJMIKOLP";
//string captcha = "";
//for (int i = 0; i < 4; i++)
//{
// captcha = captcha + subCaptcha.Substring(random.Next(subCaptcha.Length), 1);
//}
//drawing = Graphics.FromImage(image);
//drawing.DrawString(
// captcha, new Font("微软雅黑", 35),
// new SolidBrush(Color.SaddleBrown), 45, 25);
////4.将生成的验证码图片异步的存入文件
////5.能捕获抛出的若干异常，并相应的处理
////6.以上作业，需要在控制台输出线程和Task的Id，以演示异步并发的运行。
//Parallel.Invoke(() =>
//{
// try
// {
// Console.WriteLine("当前线程ID是： "+Thread.CurrentThread.ManagedThreadId);
// image.Save(@"C:\Users\Administrator\source\repos\luckstack3\Captcha\CaptchaAsync.jpg",
// ImageFormat.Jpeg);
// throw new Exception("人家大佬的作业要求");
// }
// catch (Exception)
// {
// Console.WriteLine("我是一只异常，只是输出给你看，");
// }
//});
#endregion
#region Email作业--之没写出来
/// 现有一个txt文件，里面存放了若干email地址，使用分号（;）或者换行进行了分隔。
/// 请删除其中重复的email地址，并按每30个email一行（行内用;分隔）重新组织
//EmailSettle.MakerEail();
//EmailSettle.DeleteDuplicateEmail();
#endregion
#region 画验证码作业
///Captcha Maker Method
//Captcha.RefreshCaptcha();
//Captcha Exception Method
//Captcha.CaptchaInsertException("52plk");
#endregion
}