#头条创作挑战赛#
一、WkHtmlToPdfDotNet介绍
WkHtmlToPdfDotNet是基于本地 wkhtmltopdf封装的.NET Core类库 ， 主要通过webkit引擎实现html页面转换为pdf文件 。并且支持在Windows、Docker、Linux、MacOSX运行 。主要功能实现在线URL转pdf文件或者html代码直接转换为pdf文件，并对css样式、图片等很好的支持，导出的pdf文件和网站相差不大 。
今天给大家通过实际的案例给大家介绍一下如何使用它，感兴趣的朋友可以一起来学习一下！
官网：https://github.com/HakanL/WkHtmlToPdf-DotNet
二、安装
1、使用Visual Studio 2019及以上版本创建一个.NET Core控制台程序 。2、安装WkHtmlToPdfDotNet依赖包
命令方式安装
工具→NuGet包管理器→程序包管理器控制包
安装命令如下：
Install-Package Haukcode.WkHtmlToPdfDotNet直接通过Nuget包搜索安装
工具→NuGet包管理器→管理解决方案的NuGet程序包
3、实现代码
using System;using System.IO;using WkHtmlToPdfDotNet;namespace HtmlToPdf{class Program{// https://github.com/HakanL/WkHtmlToPdf-DotNet// 安装依赖包 Install-Package Haukcode.WkHtmlToPdfDotNetstatic void Main(string[] args){//ConvertHtmlToPdf();ConvertUrlToPdf();}/// /// 基于html导出pdf/// private static void ConvertHtmlToPdf(){var converter = new BasicConverter(new PdfTools());// 绑定转换过程中处理事件日志converter.PhaseChanged= Converter_PhaseChanged;converter.ProgressChanged= Converter_ProgressChanged;converter.Finished= Converter_Finished;converter.Warning= Converter_Warning;converter.Error= Converter_Error;// pdf 样式设置var doc = new HtmlToPdfDocument(){GlobalSettings = {ColorMode = ColorMode.Color,Orientation = Orientation.Landscape,PaperSize = PaperKind.A4,},Objects = {new ObjectSettings() {PagesCount = true,HtmlContent = @" 【NetCore实战：基于html生成pdf文件案例讲解】hello
测试
",WebSettings = { DefaultEncoding = "utf-8" },HeaderSettings = { FontSize = 9, Right = "Page [page] of [toPage]", Line = false },FooterSettings = { FontSize = 9, Right = "Page [page] of [toPage]" }}}};// 转换为二进制byte[] pdf = converter.Convert(doc);// 判断目录是否存在 ， 不存在则创建if (!Directory.Exists("Files")){Directory.CreateDirectory("Files");}// 文件保存using (var stream = new FileStream(Path.Combine("Files", DateTime.UtcNow.Ticks.ToString()".pdf"), FileMode.Create)){stream.Write(pdf, 0, pdf.Length);}}////// 基于url导出pdf///private static void ConvertUrlToPdf(){var converter = new BasicConverter(new PdfTools());// 绑定转换过程中处理事件日志converter.PhaseChanged= Converter_PhaseChanged;converter.ProgressChanged= Converter_ProgressChanged;converter.Finished= Converter_Finished;converter.Warning= Converter_Warning;converter.Error= Converter_Error;// pdf 样式设置var doc = new HtmlToPdfDocument(){GlobalSettings = {PaperSize = PaperKind.A3, // 纸张类型Orientation = Orientation.Landscape,},// 支持多个网址Objects = {new ObjectSettings(){Page = "http://baidu.com/",},new ObjectSettings(){Page = "https://www.163.com/dy/article/HJVSIG920511DTU9.html?clickfrom=w_yw_zgzz",}}};// 转换为二进制byte[] pdf = converter.Convert(doc);// 判断目录是否存在，不存在则创建if (!Directory.Exists("FilesHtml")){Directory.CreateDirectory("FilesHtml");}// 文件保存using (var stream = new FileStream(Path.Combine("FilesHtml", DateTime.UtcNow.Ticks.ToString()".pdf"), FileMode.Create)){stream.Write(pdf, 0, pdf.Length);}}////// 转换产生错误日志输出////// ///
private static void Converter_Error(object sender, WkHtmlToPdfDotNet.EventDefinitions.ErrorArgs e){Console.WriteLine("[转换错误] {0}", e.Message);}///
/// 转换产生警告日志输出////// ///
private static void Converter_Warning(object sender, WkHtmlToPdfDotNet.EventDefinitions.WarningArgs e){Console.WriteLine("[警告] {0}", e.Message);}///
/// 转转完成日志输出////// ///
private static void Converter_Finished(object sender, WkHtmlToPdfDotNet.EventDefinitions.FinishedArgs e){Console.WriteLine("转换 {0} ", e.Success ? "成功" : "失败");}///
/// 转换进度日志输出////// ///
private static void Converter_ProgressChanged(object sender, WkHtmlToPdfDotNet.EventDefinitions.ProgressChangedArgs e){Console.WriteLine("转换进度 {0}", e.Description);}///
/// 转换阶段日志输入////// ///
private static void Converter_PhaseChanged(object sender, WkHtmlToPdfDotNet.EventDefinitions.PhaseChangedArgs e){Console.WriteLine("阶段进度 {0} - {1}", e.CurrentPhase, e.Description);}}}三、运行效果
基于在线url方式导出效果
直接拼接html方式导出效果
