7 changed files with 500 additions and 245 deletions
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2src/Shentun.Peis.Application/PacsBusiness/PacsBusinessAppService.cs
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2src/Shentun.Peis.Application/RegisterCheckPictures/RegisterCheckPictureAppService.cs
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105src/Shentun.Utilities/DocnetConverter.cs
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89src/Shentun.Utilities/MagickConverter.cs
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74src/Shentun.Utilities/PdfPigConverter.cs
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9src/Shentun.Utilities/Shentun.Utilities.csproj
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464src/Shentun.Utilities/ValidationCodeHelper.cs
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using Docnet.Core; |
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using Docnet.Core.Models; |
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using SkiaSharp; |
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using System; |
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using System.Collections.Generic; |
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using System.Drawing; |
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using System.Drawing.Imaging; |
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using System.IO; |
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using System.Linq; |
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using System.Runtime.InteropServices; |
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using System.Text; |
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using System.Threading.Tasks; |
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namespace Shentun.Utilities |
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{ |
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public class DocnetConverter |
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{ |
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public static List<string> ConvertPdfToImages(string pdfBase64) |
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{ |
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List<string> base64Images = new List<string>(); |
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// 处理可能包含 data:application/pdf;base64, 前缀的情况
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if (pdfBase64.Contains("base64,")) |
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{ |
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pdfBase64 = pdfBase64.Substring(pdfBase64.IndexOf(",") + 1); |
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} |
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// 将Base64字符串转换为字节数组
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byte[] pdfBytes = Convert.FromBase64String(pdfBase64); |
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// 使用 Docnet 处理
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using (var docLib = DocLib.Instance) |
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using (var docReader = docLib.GetDocReader(pdfBytes, new PageDimensions())) |
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{ |
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int pageCount = docReader.GetPageCount(); |
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for (int i = 0; i < pageCount; i++) // Docnet 页码从 0 开始
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{ |
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using (var pageReader = docReader.GetPageReader(i)) |
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{ |
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// 获取页面尺寸
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int width = pageReader.GetPageWidth(); |
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int height = pageReader.GetPageHeight(); |
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// 获取 BGRA 原始数据
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byte[] rawBytes = pageReader.GetImage( |
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RenderFlags.RenderAnnotations | RenderFlags.OptimizeTextForLcd |
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); |
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// 创建 Bitmap 并写入像素数据
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using (var bitmap = new Bitmap(width, height, PixelFormat.Format32bppArgb)) |
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{ |
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// 锁定位图的内存区域
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var rect = new Rectangle(0, 0, width, height); |
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var bmpData = bitmap.LockBits(rect, ImageLockMode.WriteOnly, bitmap.PixelFormat); |
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try |
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{ |
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// Docnet 返回的是 BGRA 格式，Bitmap 需要 ARGB 格式
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// 需要转换颜色顺序：BGRA -> ARGB
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int stride = bmpData.Stride; |
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byte[] argbBytes = new byte[stride * height]; |
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for (int y = 0; y < height; y++) |
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{ |
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int rawRowOffset = y * width * 4; |
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int argbRowOffset = y * stride; |
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for (int x = 0; x < width; x++) |
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{ |
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int rawIndex = rawRowOffset + x * 4; |
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int argbIndex = argbRowOffset + x * 4; |
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// BGRA -> ARGB 转换
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argbBytes[argbIndex] = rawBytes[rawIndex + 2]; // R
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argbBytes[argbIndex + 1] = rawBytes[rawIndex + 1]; // G
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argbBytes[argbIndex + 2] = rawBytes[rawIndex]; // B
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argbBytes[argbIndex + 3] = rawBytes[rawIndex + 3]; // A
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} |
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} |
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// 复制转换后的数据到位图
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Marshal.Copy(argbBytes, 0, bmpData.Scan0, argbBytes.Length); |
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} |
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finally |
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{ |
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bitmap.UnlockBits(bmpData); |
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} |
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// 保存为 PNG 并转换为 Base64
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using (var ms = new MemoryStream()) |
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{ |
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bitmap.Save(ms, ImageFormat.Png); |
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string base64 = Convert.ToBase64String(ms.ToArray()); |
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base64Images.Add(base64); |
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} |
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} |
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} |
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} |
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} |
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return base64Images; |
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} |
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} |
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} |
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@ -0,0 +1,89 @@ |
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using ImageMagick; |
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using System; |
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using System.Collections.Generic; |
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using System.IO; |
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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 Shentun.Utilities |
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{ |
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public class MagickConverter |
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{ |
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//static MagickConverter()
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//{
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// // 设置32位Ghostscript的目录
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// // 根据您的实际安装路径修改
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// MagickNET.SetGhostscriptDirectory(@"C:\Program Files\gs\gs10.04.0\bin");
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// // 或者直接指定可执行文件路径
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// // MagickNET.SetGhostscriptExecutablePath(@"C:\Program Files (x86)\gs\gs10.03.0\bin\gswin32c.exe");
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//}
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public static List<string> ConvertPdfToImages(string pdfBase64, int dpi = 200, MagickFormat imageFormat = MagickFormat.Jpeg, int jpegQuality = 85, int startPage = 1, int? pageCount = null) |
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{ |
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var base64Images = new List<string>(); |
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// 1. 处理 Base64 前缀
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if (pdfBase64.Contains("base64,")) |
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{ |
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pdfBase64 = pdfBase64.Substring(pdfBase64.IndexOf(",") + 1); |
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} |
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// 2. 将 Base64 转换为字节数组
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byte[] pdfBytes = Convert.FromBase64String(pdfBase64); |
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// 3. 使用 Magick.NET 处理 PDF
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var settings = new MagickReadSettings |
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{ |
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Density = new Density(dpi, dpi) |
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}; |
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// 如果指定了分页参数，则设置
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if (startPage > 1 || pageCount.HasValue) |
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{ |
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settings.FrameIndex = (uint)(startPage - 1); // 强制转换为 uint
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if (pageCount.HasValue) |
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{ |
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settings.FrameCount = (uint)pageCount.Value; // 强制转换为 uint
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} |
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} |
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using (var memoryStream = new MemoryStream(pdfBytes)) |
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using (var images = new MagickImageCollection()) |
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{ |
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// 读取 PDF
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images.Read(memoryStream, settings); |
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// 遍历每一页
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for (int i = 0; i < images.Count; i++) |
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{ |
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using (var image = images[i]) |
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{ |
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// 解决某些 PDF 电子签章导致的黑屏问题
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image.Alpha(AlphaOption.Remove); |
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// 设置输出格式
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image.Format = imageFormat; |
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// 如果是 JPEG，设置质量
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if (imageFormat == MagickFormat.Jpeg) |
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{ |
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image.Quality = (uint)jpegQuality; |
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} |
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// 转换为 Base64
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using (var outputStream = new MemoryStream()) |
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{ |
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image.Write(outputStream); |
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string base64 = Convert.ToBase64String(outputStream.ToArray()); |
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base64Images.Add(base64); |
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} |
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} |
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} |
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} |
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return base64Images; |
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} |
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} |
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} |
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@ -1,256 +1,256 @@ |
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using System; |
using System; |
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using System.DrawingCore; |
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using System.DrawingCore.Drawing2D; |
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using System.DrawingCore.Imaging; |
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//using System.DrawingCore;
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//using System.DrawingCore.Drawing2D;
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//using System.DrawingCore.Imaging;
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using System.IO; |
using System.IO; |
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namespace Shentun.Utilities |
namespace Shentun.Utilities |
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{ |
{ |
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public sealed class ValidationCodeHelper |
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{ |
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#region 单例模式
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//创建私有化静态obj锁
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private static readonly object _lockObject = new object(); |
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//创建私有静态字段，接收类的实例化对象
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private static ValidationCodeHelper _validationCodeHelper = null; |
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//构造函数私有化
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private ValidationCodeHelper() { } |
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//创建单利对象资源并返回
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public static ValidationCodeHelper Instance |
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{ |
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get { |
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if (_validationCodeHelper == null) |
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{ |
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lock (_lockObject) |
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{ |
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if (_validationCodeHelper == null) |
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_validationCodeHelper = new ValidationCodeHelper(); |
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} |
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} |
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return _validationCodeHelper; |
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} |
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//public sealed class ValidationCodeHelper
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//{
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// #region 单例模式
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// //创建私有化静态obj锁
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// private static readonly object _lockObject = new object();
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// //创建私有静态字段，接收类的实例化对象
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// private static ValidationCodeHelper _validationCodeHelper = null;
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// //构造函数私有化
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// private ValidationCodeHelper() { }
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// //创建单利对象资源并返回
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// public static ValidationCodeHelper Instance
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// {
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// get {
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// if (_validationCodeHelper == null)
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// {
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// lock (_lockObject)
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// {
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// if (_validationCodeHelper == null)
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// _validationCodeHelper = new ValidationCodeHelper();
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// }
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// }
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// return _validationCodeHelper;
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// }
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} |
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#endregion
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// }
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// #endregion
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#region 生产验证码
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// #region 生产验证码
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/// <summary>
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/// 1.数字验证码
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/// </summary>
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/// <param name="length"></param>
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/// <returns></returns>
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private string CreateNumberValidationCode(int length) |
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{ |
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int[] randMembers = new int[length]; |
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int[] validateNums = new int[length]; |
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string validateNumberStr = ""; |
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//生成起始序列值
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int seekSeek = unchecked((int)DateTime.Now.Ticks); |
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Random seekRand = new Random(seekSeek); |
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int beginSeek = seekRand.Next(0, Int32.MaxValue - length * 10000); |
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int[] seeks = new int[length]; |
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for (int i = 0; i < length; i++) |
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{ |
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beginSeek += 10000; |
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seeks[i] = beginSeek; |
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} |
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//生成随机数字
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for (int i = 0; i < length; i++) |
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{ |
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Random rand = new Random(seeks[i]); |
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int pownum = 1 * (int)Math.Pow(10, length); |
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randMembers[i] = rand.Next(pownum, Int32.MaxValue); |
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} |
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//抽取随机数字
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for (int i = 0; i < length; i++) |
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{ |
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string numStr = randMembers[i].ToString(); |
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int numLength = numStr.Length; |
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Random rand = new Random(); |
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int numPosition = rand.Next(0, numLength - 1); |
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validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1)); |
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} |
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//生成验证码
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for (int i = 0; i < length; i++) |
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{ |
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validateNumberStr += validateNums[i].ToString(); |
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} |
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return validateNumberStr; |
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} |
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// /// <summary>
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// /// 1.数字验证码
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// /// </summary>
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// /// <param name="length"></param>
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// /// <returns></returns>
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// private string CreateNumberValidationCode(int length)
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// {
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// int[] randMembers = new int[length];
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// int[] validateNums = new int[length];
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// string validateNumberStr = "";
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// //生成起始序列值
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// int seekSeek = unchecked((int)DateTime.Now.Ticks);
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// Random seekRand = new Random(seekSeek);
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// int beginSeek = seekRand.Next(0, Int32.MaxValue - length * 10000);
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// int[] seeks = new int[length];
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// for (int i = 0; i < length; i++)
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// {
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// beginSeek += 10000;
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// seeks[i] = beginSeek;
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// }
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// //生成随机数字
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// for (int i = 0; i < length; i++)
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// {
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// Random rand = new Random(seeks[i]);
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// int pownum = 1 * (int)Math.Pow(10, length);
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// randMembers[i] = rand.Next(pownum, Int32.MaxValue);
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// }
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// //抽取随机数字
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// for (int i = 0; i < length; i++)
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// {
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// string numStr = randMembers[i].ToString();
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// int numLength = numStr.Length;
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// Random rand = new Random();
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// int numPosition = rand.Next(0, numLength - 1);
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// validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1));
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// }
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// //生成验证码
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// for (int i = 0; i < length; i++)
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// {
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// validateNumberStr += validateNums[i].ToString();
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// }
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// return validateNumberStr;
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// }
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/// <summary>
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/// 2.字母验证码
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/// </summary>
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/// <param name="length">字符长度</param>
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/// <returns>验证码字符</returns>
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private string CreateAbcValidationCode(int length) |
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{ |
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char[] validation = new char[length]; |
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char[] dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' |
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}; |
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Random random = new Random(); |
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for (int i = 0; i < length; i++) |
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{ |
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validation[i] = dictionary[random.Next(dictionary.Length - 1)]; |
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} |
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return new string(validation); |
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} |
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// /// <summary>
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// /// 2.字母验证码
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// /// </summary>
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// /// <param name="length">字符长度</param>
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// /// <returns>验证码字符</returns>
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// private string CreateAbcValidationCode(int length)
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// {
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// char[] validation = new char[length];
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// char[] dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
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// 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
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// };
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// Random random = new Random();
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// for (int i = 0; i < length; i++)
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// {
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// validation[i] = dictionary[random.Next(dictionary.Length - 1)];
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// }
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// return new string(validation);
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// }
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/// <summary>
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/// 3.混合验证码
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/// </summary>
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/// <param name="length">字符长度</param>
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/// <returns>验证码字符</returns>
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private string CreateMixValidationCode(int length) |
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{ |
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char[] validation = new char[length]; |
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char[] dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', |
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' |
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}; |
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Random random = new Random(); |
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for (int i = 0; i < length; i++) |
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{ |
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||||
validation[i] = dictionary[random.Next(dictionary.Length - 1)]; |
|
||||
} |
|
||||
return new string(validation); |
|
||||
} |
|
||||
|
// /// <summary>
|
||||
|
// /// 3.混合验证码
|
||||
|
// /// </summary>
|
||||
|
// /// <param name="length">字符长度</param>
|
||||
|
// /// <returns>验证码字符</returns>
|
||||
|
// private string CreateMixValidationCode(int length)
|
||||
|
// {
|
||||
|
// char[] validation = new char[length];
|
||||
|
// char[] dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
|
||||
|
// '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
|
||||
|
// 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
|
||||
|
// };
|
||||
|
// Random random = new Random();
|
||||
|
// for (int i = 0; i < length; i++)
|
||||
|
// {
|
||||
|
// validation[i] = dictionary[random.Next(dictionary.Length - 1)];
|
||||
|
// }
|
||||
|
// return new string(validation);
|
||||
|
// }
|
||||
|
|
||||
/// <summary>
|
|
||||
/// 产生验证码（随机产生4-6位）
|
|
||||
/// </summary>
|
|
||||
/// <param name="type">验证码类型：数字，字符，符合</param>
|
|
||||
/// <returns></returns>
|
|
||||
public string CreateValidationCode(ValidationCodeType type, int length = 4) |
|
||||
{ |
|
||||
string validationCode = string.Empty; |
|
||||
Random random = new Random(); |
|
||||
switch (type) |
|
||||
{ |
|
||||
case ValidationCodeType.NumberValidationCode: |
|
||||
validationCode = Instance.CreateNumberValidationCode(length); |
|
||||
break; |
|
||||
case ValidationCodeType.AbcValidationCode: |
|
||||
validationCode = Instance.CreateAbcValidationCode(length); |
|
||||
break; |
|
||||
case ValidationCodeType.MixValidationCode: |
|
||||
validationCode = Instance.CreateMixValidationCode(length); |
|
||||
break; |
|
||||
} |
|
||||
return validationCode; |
|
||||
} |
|
||||
#endregion
|
|
||||
|
// /// <summary>
|
||||
|
// /// 产生验证码（随机产生4-6位）
|
||||
|
// /// </summary>
|
||||
|
// /// <param name="type">验证码类型：数字，字符，符合</param>
|
||||
|
// /// <returns></returns>
|
||||
|
// public string CreateValidationCode(ValidationCodeType type, int length = 4)
|
||||
|
// {
|
||||
|
// string validationCode = string.Empty;
|
||||
|
// Random random = new Random();
|
||||
|
// switch (type)
|
||||
|
// {
|
||||
|
// case ValidationCodeType.NumberValidationCode:
|
||||
|
// validationCode = Instance.CreateNumberValidationCode(length);
|
||||
|
// break;
|
||||
|
// case ValidationCodeType.AbcValidationCode:
|
||||
|
// validationCode = Instance.CreateAbcValidationCode(length);
|
||||
|
// break;
|
||||
|
// case ValidationCodeType.MixValidationCode:
|
||||
|
// validationCode = Instance.CreateMixValidationCode(length);
|
||||
|
// break;
|
||||
|
// }
|
||||
|
// return validationCode;
|
||||
|
// }
|
||||
|
// #endregion
|
||||
|
|
||||
#region 验证码图片
|
|
||||
/// <summary>
|
|
||||
/// 验证码图片 => Bitmap
|
|
||||
/// </summary>
|
|
||||
/// <param name="validationCode">验证码</param>
|
|
||||
/// <param name="width">宽</param>
|
|
||||
/// <param name="height">高</param>
|
|
||||
/// <returns>Bitmap</returns>
|
|
||||
public Bitmap CreateBitmapByImageValidationCode(string validationCode, int width, int height) |
|
||||
{ |
|
||||
Font font = new Font("Arial", 14, (FontStyle.Bold | FontStyle.Italic)); |
|
||||
Brush brush; |
|
||||
Bitmap bitmap = new Bitmap(width, height); |
|
||||
Graphics g = Graphics.FromImage(bitmap); |
|
||||
SizeF totalSizeF = g.MeasureString(validationCode, font); |
|
||||
SizeF curCharSizeF; |
|
||||
PointF startPointF = new PointF(0, (height - totalSizeF.Height) / 2); |
|
||||
Random random = new Random(); //随机数产生器
|
|
||||
g.Clear(Color.White); //清空图片背景色
|
|
||||
for (int i = 0; i < validationCode.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(validationCode[i].ToString(), font, brush, startPointF); |
|
||||
curCharSizeF = g.MeasureString(validationCode[i].ToString(), font); |
|
||||
startPointF.X += curCharSizeF.Width; |
|
||||
} |
|
||||
|
// #region 验证码图片
|
||||
|
// /// <summary>
|
||||
|
// /// 验证码图片 => Bitmap
|
||||
|
// /// </summary>
|
||||
|
// /// <param name="validationCode">验证码</param>
|
||||
|
// /// <param name="width">宽</param>
|
||||
|
// /// <param name="height">高</param>
|
||||
|
// /// <returns>Bitmap</returns>
|
||||
|
// public Bitmap CreateBitmapByImageValidationCode(string validationCode, int width, int height)
|
||||
|
// {
|
||||
|
// Font font = new Font("Arial", 14, (FontStyle.Bold | FontStyle.Italic));
|
||||
|
// Brush brush;
|
||||
|
// Bitmap bitmap = new Bitmap(width, height);
|
||||
|
// Graphics g = Graphics.FromImage(bitmap);
|
||||
|
// SizeF totalSizeF = g.MeasureString(validationCode, font);
|
||||
|
// SizeF curCharSizeF;
|
||||
|
// PointF startPointF = new PointF(0, (height - totalSizeF.Height) / 2);
|
||||
|
// Random random = new Random(); //随机数产生器
|
||||
|
// g.Clear(Color.White); //清空图片背景色
|
||||
|
// for (int i = 0; i < validationCode.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(validationCode[i].ToString(), font, brush, startPointF);
|
||||
|
// curCharSizeF = g.MeasureString(validationCode[i].ToString(), font);
|
||||
|
// startPointF.X += curCharSizeF.Width;
|
||||
|
// }
|
||||
|
|
||||
//画图片的干扰线
|
|
||||
for (int i = 0; i < 10; i++) |
|
||||
{ |
|
||||
int x1 = random.Next(bitmap.Width); |
|
||||
int x2 = random.Next(bitmap.Width); |
|
||||
int y1 = random.Next(bitmap.Height); |
|
||||
int y2 = random.Next(bitmap.Height); |
|
||||
g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); |
|
||||
} |
|
||||
|
// //画图片的干扰线
|
||||
|
// for (int i = 0; i < 10; i++)
|
||||
|
// {
|
||||
|
// int x1 = random.Next(bitmap.Width);
|
||||
|
// int x2 = random.Next(bitmap.Width);
|
||||
|
// int y1 = random.Next(bitmap.Height);
|
||||
|
// int y2 = random.Next(bitmap.Height);
|
||||
|
// g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
|
||||
|
// }
|
||||
|
|
||||
//画图片的前景干扰点
|
|
||||
for (int i = 0; i < 100; i++) |
|
||||
{ |
|
||||
int x = random.Next(bitmap.Width); |
|
||||
int y = random.Next(bitmap.Height); |
|
||||
bitmap.SetPixel(x, y, Color.FromArgb(random.Next())); |
|
||||
} |
|
||||
|
// //画图片的前景干扰点
|
||||
|
// for (int i = 0; i < 100; i++)
|
||||
|
// {
|
||||
|
// int x = random.Next(bitmap.Width);
|
||||
|
// int y = random.Next(bitmap.Height);
|
||||
|
// bitmap.SetPixel(x, y, Color.FromArgb(random.Next()));
|
||||
|
// }
|
||||
|
|
||||
g.DrawRectangle(new Pen(Color.Silver), 0, 0, bitmap.Width - 1, bitmap.Height - 1); //画图片的边框线
|
|
||||
g.Dispose(); |
|
||||
return bitmap; |
|
||||
} |
|
||||
|
// g.DrawRectangle(new Pen(Color.Silver), 0, 0, bitmap.Width - 1, bitmap.Height - 1); //画图片的边框线
|
||||
|
// g.Dispose();
|
||||
|
// return bitmap;
|
||||
|
// }
|
||||
|
|
||||
/// <summary>
|
|
||||
/// 验证码图片 => byte[]
|
|
||||
/// </summary>
|
|
||||
/// <param name="validationCode">验证码</param>
|
|
||||
/// <param name="width">宽</param>
|
|
||||
/// <param name="height">高</param>
|
|
||||
/// <returns>byte[]</returns>
|
|
||||
public byte[] CreateByteByImageValidationCode(string validationCode, int width, int height) |
|
||||
{ |
|
||||
Font font = new Font("Arial", 14, (FontStyle.Bold | FontStyle.Italic)); |
|
||||
Brush brush; |
|
||||
Bitmap bitmap = new Bitmap(width, height); |
|
||||
Graphics g = Graphics.FromImage(bitmap); |
|
||||
SizeF totalSizeF = g.MeasureString(validationCode, font); |
|
||||
SizeF curCharSizeF; |
|
||||
PointF startPointF = new PointF(0, (height - totalSizeF.Height) / 2); |
|
||||
Random random = new Random(); //随机数产生器
|
|
||||
g.Clear(Color.White); //清空图片背景色
|
|
||||
for (int i = 0; i < validationCode.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(validationCode[i].ToString(), font, brush, startPointF); |
|
||||
curCharSizeF = g.MeasureString(validationCode[i].ToString(), font); |
|
||||
startPointF.X += curCharSizeF.Width; |
|
||||
} |
|
||||
|
// /// <summary>
|
||||
|
// /// 验证码图片 => byte[]
|
||||
|
// /// </summary>
|
||||
|
// /// <param name="validationCode">验证码</param>
|
||||
|
// /// <param name="width">宽</param>
|
||||
|
// /// <param name="height">高</param>
|
||||
|
// /// <returns>byte[]</returns>
|
||||
|
// public byte[] CreateByteByImageValidationCode(string validationCode, int width, int height)
|
||||
|
// {
|
||||
|
// Font font = new Font("Arial", 14, (FontStyle.Bold | FontStyle.Italic));
|
||||
|
// Brush brush;
|
||||
|
// Bitmap bitmap = new Bitmap(width, height);
|
||||
|
// Graphics g = Graphics.FromImage(bitmap);
|
||||
|
// SizeF totalSizeF = g.MeasureString(validationCode, font);
|
||||
|
// SizeF curCharSizeF;
|
||||
|
// PointF startPointF = new PointF(0, (height - totalSizeF.Height) / 2);
|
||||
|
// Random random = new Random(); //随机数产生器
|
||||
|
// g.Clear(Color.White); //清空图片背景色
|
||||
|
// for (int i = 0; i < validationCode.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(validationCode[i].ToString(), font, brush, startPointF);
|
||||
|
// curCharSizeF = g.MeasureString(validationCode[i].ToString(), font);
|
||||
|
// startPointF.X += curCharSizeF.Width;
|
||||
|
// }
|
||||
|
|
||||
//画图片的干扰线
|
|
||||
for (int i = 0; i < 10; i++) |
|
||||
{ |
|
||||
int x1 = random.Next(bitmap.Width); |
|
||||
int x2 = random.Next(bitmap.Width); |
|
||||
int y1 = random.Next(bitmap.Height); |
|
||||
int y2 = random.Next(bitmap.Height); |
|
||||
g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); |
|
||||
} |
|
||||
|
// //画图片的干扰线
|
||||
|
// for (int i = 0; i < 10; i++)
|
||||
|
// {
|
||||
|
// int x1 = random.Next(bitmap.Width);
|
||||
|
// int x2 = random.Next(bitmap.Width);
|
||||
|
// int y1 = random.Next(bitmap.Height);
|
||||
|
// int y2 = random.Next(bitmap.Height);
|
||||
|
// g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2);
|
||||
|
// }
|
||||
|
|
||||
//画图片的前景干扰点
|
|
||||
for (int i = 0; i < 100; i++) |
|
||||
{ |
|
||||
int x = random.Next(bitmap.Width); |
|
||||
int y = random.Next(bitmap.Height); |
|
||||
bitmap.SetPixel(x, y, Color.FromArgb(random.Next())); |
|
||||
} |
|
||||
|
// //画图片的前景干扰点
|
||||
|
// for (int i = 0; i < 100; i++)
|
||||
|
// {
|
||||
|
// int x = random.Next(bitmap.Width);
|
||||
|
// int y = random.Next(bitmap.Height);
|
||||
|
// bitmap.SetPixel(x, y, Color.FromArgb(random.Next()));
|
||||
|
// }
|
||||
|
|
||||
g.DrawRectangle(new Pen(Color.Silver), 0, 0, bitmap.Width - 1, bitmap.Height - 1); //画图片的边框线
|
|
||||
g.Dispose(); |
|
||||
|
// g.DrawRectangle(new Pen(Color.Silver), 0, 0, bitmap.Width - 1, bitmap.Height - 1); //画图片的边框线
|
||||
|
// g.Dispose();
|
||||
|
|
||||
//保存图片数据
|
|
||||
MemoryStream stream = new MemoryStream(); |
|
||||
bitmap.Save(stream, ImageFormat.Jpeg); |
|
||||
byte[] imageByte = stream.ToArray(); |
|
||||
|
// //保存图片数据
|
||||
|
// MemoryStream stream = new MemoryStream();
|
||||
|
// bitmap.Save(stream, ImageFormat.Jpeg);
|
||||
|
// byte[] imageByte = stream.ToArray();
|
||||
|
|
||||
//输出图片流
|
|
||||
return imageByte; |
|
||||
|
// //输出图片流
|
||||
|
// return imageByte;
|
||||
|
|
||||
} |
|
||||
#endregion
|
|
||||
} |
|
||||
|
// }
|
||||
|
// #endregion
|
||||
|
//}
|
||||
|
|
||||
public enum ValidationCodeType { NumberValidationCode, AbcValidationCode, MixValidationCode }; |
|
||||
|
//public enum ValidationCodeType { NumberValidationCode, AbcValidationCode, MixValidationCode };
|
||||
} |
} |
||||
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