初始化
This commit is contained in:
85
WebAPIServer/Extensions/CaptchaHelperSkiaSharp.cs
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85
WebAPIServer/Extensions/CaptchaHelperSkiaSharp.cs
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using System.Text;
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using SkiaSharp;
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using static IronPython.Modules._ast;
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namespace WebAPIServer.Extensions
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{
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public class CaptchaHelperSkiaSharp
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{
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private static string GenerateRandomText(int length)
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{
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const string valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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StringBuilder res = new StringBuilder();
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Random rnd = new Random();
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while (0 < length--)
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res.Append(valid[rnd.Next(valid.Length)]);
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return res.ToString();
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}
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/// <summary>
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/// 获取图像数字验证码
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/// </summary>
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/// <param name="text">验证码内容，如4为数字</param>
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/// <returns></returns>
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public static byte[] GetVerifyCode(string text)
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{
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int width = 128;
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int height = 45;
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Random random = new();
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//创建bitmap位图
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using SKBitmap image = new(width, height, SKColorType.Bgra8888, SKAlphaType.Premul);
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//创建画笔
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using SKCanvas canvas = new(image);
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//填充背景颜色为白色
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canvas.DrawColor(SKColors.White);
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//画图片的背景噪音线
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for (int i = 0; i < (width * height * 0.015); i++)
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{
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using SKPaint drawStyle = new();
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drawStyle.Color = new(Convert.ToUInt32(random.Next(Int32.MaxValue)));
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canvas.DrawLine(random.Next(0, width), random.Next(0, height), random.Next(0, width), random.Next(0, height), drawStyle);
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}
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//将文字写到画布上
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using (SKPaint drawStyle = new())
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{
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drawStyle.Color = SKColors.Red;
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drawStyle.TextSize = height;
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drawStyle.StrokeWidth = 1;
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float emHeight = height - (float)height * (float)0.14;
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float emWidth = ((float)width / text.Length) - ((float)width * (float)0.13);
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canvas.DrawText(text, emWidth, emHeight, drawStyle);
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}
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//画图片的前景噪音点
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for (int i = 0; i < (width * height * 0.6); i++)
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{
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image.SetPixel(random.Next(0, width), random.Next(0, height), new SKColor(Convert.ToUInt32(random.Next(Int32.MaxValue))));
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}
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using var img = SKImage.FromBitmap(image);
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using SKData p = img.Encode(SKEncodedImageFormat.Png, 100);
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return p.ToArray();
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}
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public static byte[] GenerateCaptchaImage(int width = 100, int height = 40)
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{
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var random = new Random();
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string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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string captchaText = "";
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for (int i = 0; i < 4; i++) // 生成6个字符的验证码
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{
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captchaText += chars[random.Next(chars.Length)];
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}
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return GetVerifyCode(captchaText);
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}
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}
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}
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346
WebAPIServer/Extensions/StringExtensions.cs
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346
WebAPIServer/Extensions/StringExtensions.cs
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@@ -0,0 +1,346 @@
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.Drawing.Imaging;
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using System.Linq;
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using System.Reflection;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading.Tasks;
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namespace WebAPIServer.Extensions
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{
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/// <summary>
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/// 字符串扩展函数工具类
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/// </summary>
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public static class StringExtensions
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{
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/// <summary>
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/// 将\r\n替换成BR
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string ToSafeBR(this string str)
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{
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if (!string.IsNullOrEmpty(str))
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{
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return str.Replace("\r\n", "<br>").Replace("\r", "<br>").Replace("\n", "<br>");
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}
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return str;
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}
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/// <summary>
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/// 得到父部门的ID
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string GetDepartmentFatherID(this string str)
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{
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if (!string.IsNullOrEmpty(str) && str.Length > 2)
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{
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str = str.Substring(0, str.Length - 3);
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}
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return str;
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}
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/// <summary>
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/// 截取字符串，超过部分用...代替
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/// </summary>
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/// <param name="source"></param>
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/// <param name="len"></param>
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/// <returns></returns>
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public static string Substr(this string source, int len)
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{
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return source.Substr(len, "...");
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}
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/// <summary>
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/// 截取字符串，超过部分用自定义代替
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/// </summary>
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/// <param name="source"></param>
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/// <param name="len"></param>
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/// <param name="att"></param>
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/// <returns></returns>
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public static string Substr(this string source, int len, string att)
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{
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if (string.IsNullOrEmpty(source))
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{
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return string.Empty;
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}
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att = (att ?? string.Empty);
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Regex regex = new Regex("[\\u4e00-\\u9fa5]");
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Regex regex2 = new Regex("^[A-Za-z0-9]+$");
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if (regex.IsMatch(source))
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{
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if (source.Length <= len)
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{
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return source;
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}
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return source.Substring(0, len) + att;
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}
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else if (regex2.IsMatch(source))
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{
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if (source.Length <= len * 2)
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{
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return source;
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}
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return source.Substring(0, len * 2) + att;
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}
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else
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{
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if (source.Length <= len)
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{
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return source;
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}
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return source.Substring(0, len) + att;
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}
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}
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public static string InputStr(this string source)
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{
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if (!string.IsNullOrEmpty(source))
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{
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Regex regex = new Regex("[\\u4e00-\\u9fa5]");
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Regex regex2 = new Regex("^[A-Za-z0-9]+$");
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if (regex.IsMatch(source))
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{
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if (source.Length < 3)
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{
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return string.Format("{0}**", source[0]);
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}
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if (source.Length == 3)
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{
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return string.Format("{0}*{1}", source[0], source[source.Length - 1]);
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}
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if (source.Length > 3)
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{
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return string.Format("{0}**{1}", source[0], source[source.Length - 1]);
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}
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}
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else
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{
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if (!regex2.IsMatch(source))
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{
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return string.Format("{0}**", source.Substring(0, 2));
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}
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if (source.Length < 6)
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{
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return string.Format("{0}**", source.Substring(0, 2));
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}
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return string.Format("{0}****{1}", source.Substring(0, 2), source.Substring(source.Length - 3, 2));
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}
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}
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return string.Empty;
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}
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/// <summary>
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/// 移除掉所有的Html代码
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/// </summary>
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/// <param name="strHtml"></param>
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/// <returns></returns>
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public static string RemoveHtml(this string strHtml)
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{
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Regex regex = new Regex("<.+?>", RegexOptions.IgnoreCase);
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strHtml = regex.Replace(strHtml, "");
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strHtml = strHtml.Replace(" ", "");
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return strHtml;
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}
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/// <summary>
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/// 生成0-9随机数
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/// </summary>
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/// <param name="VcodeNum">生成长度</param>
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/// <returns></returns>
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public static string RndNum(int VcodeNum)
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{
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StringBuilder stringBuilder = new StringBuilder(VcodeNum);
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Random random = new Random();
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for (int i = 1; i < VcodeNum + 1; i++)
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{
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int num = random.Next(9);
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stringBuilder.AppendFormat("{0}", num);
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}
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return stringBuilder.ToString();
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}
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/// <summary>
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/// 返回星号的加密
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/// </summary>
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/// <param name="items"></param>
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/// <param name="mask"></param>
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/// <returns></returns>
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public static string MaskStar(Dictionary<string, string> items, bool mask)
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{
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StringBuilder stringBuilder = new StringBuilder();
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if (mask)
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{
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foreach (KeyValuePair<string, string> keyValuePair in items)
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{
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stringBuilder.Append(string.Concat(new string[]
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{
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"$('#",
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keyValuePair.Key,
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"').attr('name', '",
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keyValuePair.Key,
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"mask');"
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}));
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}
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stringBuilder.Append("$('.maskstar').attr('disabled', true);");
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stringBuilder.Append("$('.maskstar').val('***');");
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}
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else
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{
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foreach (KeyValuePair<string, string> keyValuePair2 in items)
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{
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stringBuilder.Append(string.Concat(new string[]
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{
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"$('#",
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keyValuePair2.Key,
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"').attr('name', '",
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keyValuePair2.Key,
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"');"
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}));
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stringBuilder.Append(string.Concat(new string[]
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{
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"$('#",
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keyValuePair2.Key,
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"').val('",
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keyValuePair2.Value,
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"');"
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}));
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}
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stringBuilder.Append("$('.maskstar').attr('disabled', false);");
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}
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return stringBuilder.ToString();
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}
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/// <summary>
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/// 给自动填充使用
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/// </summary>
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/// <param name="str1"></param>
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/// <param name="str2"></param>
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/// <returns></returns>
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public static string ToAutoComplate(this string str1, string str2)
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{
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if (!string.IsNullOrEmpty(str1) && !string.IsNullOrEmpty(str2))
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{
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return str1 + "," + str2;
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}
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return "";
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}
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/// <summary>
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/// 返回红色字体
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/// </summary>
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/// <param name="value"></param>
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/// <returns></returns>
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public static string ToRedColor(this int value)
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{
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if (value != 0)
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{
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return "<font color='red'>" + value.ToString() + "</font>";
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}
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return value.ToString();
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}
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/// <summary>
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/// 返回安全的字符串类型如果为NULL则返回空
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/// </summary>
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/// <param name="value"></param>
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/// <returns></returns>
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public static string ToSafeString(this object value)
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{
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if (value == null)
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{
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return "";
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}
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return value.ToString();
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}
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/// <summary>
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/// 将中文转换成Unicode编码，主要用在URL传递中文
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string GB2Unicode(this string str)
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{
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string text = "";
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Encoding encoding = Encoding.GetEncoding("GB2312");
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Encoding unicode = Encoding.Unicode;
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byte[] bytes = encoding.GetBytes(str);
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for (int i = 0; i < bytes.Length; i++)
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{
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string str2 = "%" + bytes[i].ToString("x");
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text += str2;
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}
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return text;
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}
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/// <summary>
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/// 将字符串转换成为大写的MD5
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string ToMD5(this string str)
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{
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MD5CryptoServiceProvider md5CryptoServiceProvider = new MD5CryptoServiceProvider();
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byte[] array = md5CryptoServiceProvider.ComputeHash(Encoding.Default.GetBytes(str));
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StringBuilder stringBuilder = new StringBuilder();
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foreach (byte b in array)
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{
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stringBuilder.Append(b.ToString("x2"));
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}
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return stringBuilder.ToString().ToUpper();
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}
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/// <summary>
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/// 字节码长度转可读字符串 00000000 bytes 0.0GB
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/// </summary>
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/// <param name="KSize"></param>
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/// <returns></returns>
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public static string ByteSizeToString(this long KSize)
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{
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if (KSize > 0L)
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{
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string[] array = new string[]
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{
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"B",
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"KB",
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"MB",
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"GB",
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"TB"
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};
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double num = 0.0;
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int num2 = array.Length - 1;
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while (num2 >= 0 && (num = Math.Round((double)KSize / Math.Pow(1024.0, (double)num2), 2)) < 1.0)
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{
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num2--;
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}
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return string.Format("{0}{1}", num, array[num2]);
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}
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return string.Empty;
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}
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/// <summary>
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/// 将字符串转换成为大写的MD5
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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private static string GetMD5Code(this string str)
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{
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StringBuilder stringBuilder = new StringBuilder();
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using (MD5CryptoServiceProvider md5CryptoServiceProvider = new MD5CryptoServiceProvider())
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{
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byte[] array = md5CryptoServiceProvider.ComputeHash(Encoding.Default.GetBytes(str));
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foreach (byte b in array)
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{
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stringBuilder.Append(b.ToString("x2"));
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}
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}
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return stringBuilder.ToString();
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}
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}
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}
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29
WebAPIServer/Extensions/TimeExtensions.cs
Normal file
29
WebAPIServer/Extensions/TimeExtensions.cs
Normal file
@@ -0,0 +1,29 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace WebAPIServer.Extensions
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{
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public static class TimeExtensions
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{
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public static DateTime? ToDateTime(this string timeStamp)
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{
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long ticks = 0L;
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if (long.TryParse(timeStamp, out ticks))
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{
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DateTime dateTime = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
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TimeSpan value = new TimeSpan(ticks);
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return new DateTime?(dateTime.Add(value));
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}
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DateTime now = DateTime.Now;
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if (DateTime.TryParse(timeStamp, out now))
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{
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return new DateTime?(now);
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}
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return null;
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}
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}
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}
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