正文
现在有许多将HTML导出PDF的第三方包,这里介绍使用的是Select.HtmlToPdf.NetCore
使用Select.HtmlToPdf.NetCore
- 整体思路是将cshtml内容读出来,然后再转为Pdf文档
- 读取cshtml内容有两种方法,第一种使用第三方包
RazorEngine.NetCore
,第二种使用官方方法进行读取。(注意两种方法的cshtml内容略有不同)
效果图展示
在线演示地址
我把所有的源代码都上传到了我的个人Github,有需要的请自取:github.com/WeiMing0803…
首先使用ChatGPT生成个人简历信息
代码部分
HomeController.cs :
public async Task<IActionResult> ToPdf() { PdfDocument pdfDocument = new PdfDocument(); HtmlToPdf converter = new HtmlToPdf();//实例化一个html到pdf转换器对象 converter.Options.PdfPageOrientation = PdfPageOrientation.Portrait;//设置页面方向 converter.Options.PdfPageSize = PdfPageSize.A4;//设置页面大小 converter.Options.MarginTop = 10;//设置页边距 converter.Options.MarginBottom = 10; converter.Options.MarginLeft = 10; converter.Options.MarginRight = 10; PdfReportModel model = new PdfReportModel { Name = "彭于晏", Email = "pengyuyan@outlook.com" }; //string htmlResult = readByEngineRazor(model);//第一种方法,使用RazorEngine.NetCore读取Cshtml文件 string htmlResult = await readCshtml(model);//第二种方法 if (!string.IsNullOrEmpty(htmlResult)) { pdfDocument = converter.ConvertHtmlString(htmlResult); } string savePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), $@"ExportPDF\{DateTime.Now.ToString("yyyyMMdd")}"); Directory.CreateDirectory(savePath); string filename = Path.Combine(savePath, $"{DateTime.Now.ToString("yyyyMMddHHmmssffff")}.pdf"); pdfDocument.Save(filename); byte[] bytes = System.IO.File.ReadAllBytes(filename); return File(bytes, "application/pdf", Path.GetFileName(filename)); } private string readByEngineRazor(PdfReportModel model) { string template = System.IO.File.ReadAllText("Views/Report/PdfReport.cshtml"); string htmlResult = Engine.Razor.RunCompile(template, "PdfReport", typeof(PdfReportModel), model); return htmlResult; } private async Task<string> readCshtml(PdfReportModel model) { string htmlResult = await _viewRenderService.RenderToStringAsync("Report/PdfReport", model); return htmlResult; }
TemplateGadgetProvider.cs :
public class TemplateGadgetProvider { public static TemplateGadgetProvider _instance; public static TemplateGadgetProvider Instance { get { if (_instance == null) _instance = new TemplateGadgetProvider(); return _instance; } } public string Load(string virtualPath) { return File.ReadAllText(virtualPath); } }
pdfReport.css :
Css样式文件:
html { font-family: 'Open Sans', sans-serif; background: whitesmoke; } a { text-decoration: none; color: black; } hr { background: grey; } #container { position: relative; display: flex; } #profile { flex: 15%; display: block; position: relative; margin: 5% 2% 0 10%; width: 100%; height: 100%; } #info-cards { flex: 55%; display: block; margin-top: 5%; margin-right: 10%; width: 100%; height: 100%; } #image { position: relative; overflow: hidden; } #image, #profile-photo { position: relative; width: 80px; height: 80px; border-radius: 10px; } #image > a { position: absolute; top: 0; left: 0; background: rgba(0, 0, 0, 0.5) !important; height: 100%; width: 100%; display: none; } #image > a > i { -webkit-text-stroke: 1px #ffffffdd; padding: 40%; } #image:hover a { display: block; } #name { font-size: 23px !important; line-height: 20px !important; } #about, .card > ul > li { padding: 0 0 0 15px; position: relative; display: inline-block; width: 100%; } #about { font-size: 20px !important; padding: 0 !important; } #name, #about > p { font-weight: bolder; font-family: 'Open Sans', sans-serif; } #email { font-size: 15px !important; font-weight: bold !important; font-family: 'Cutive Mono', monospace; } #college, #email, #year-graduation, #education, #more-about, #telephone, #fax { color: #555; font-size: 13.5px; } strong, span { color: black; font-size: 16px; } #social-links, #about { display: inline-block; } #social-links { margin-bottom: 12px; } #social-links a { margin: 0 10px; } #edit-intro { display: block; color: #097bbf; font-family: 'Nunito', sans-serif; } .fab { font-size: 1.1em; } .fab, .fas { color: whitesmoke; } #about > a { top: 4px; right: 8px; } .edit { top: 19px; right: 10px; } #about > a, .edit { position: absolute; font-size: 15px !important; } .stroke-transparent { -webkit-text-stroke: 1px #000; -webkit-text-fill-color: transparent; } .blue { color: #097bbf !important; font-size: 13px; } .stroke-transparent-blue { -webkit-text-stroke: 1px #097bbf; -webkit-text-fill-color: transparent; } .card { box-shadow: 0 3px 10px 0 rgba(0, 0, 0, .1); overflow-x: hidden; margin-bottom: 30px; padding: 15px 30px 30px 30px; background-color: #fff; } .card > p { color: #0e141e; font-weight: bolder; font-size: 18px; line-height: 2; } .card > p > i { font-size: 18px; } .card > a { font-weight: 400; font-size: 15px; margin: 0; margin-left: 25px; padding: 0; border: 0; height: auto; background: transparent; color: #097bbf; outline: none; cursor: pointer; } .card > ul { list-style-type: none; } .tags { font-size: 17px; font-weight: bolder; } .tags ~ a { display: none !important; } .tags span { font-size: 14px; font-weight: normal; color: #0e141e; } .tags span span { color: #738f93; } @media screen and (max-width:1090px) { #profile { margin-left: 5%; } } @media screen and (max-width:850px) { #container { display: block; } #profile { width: 90%; } .card { margin: 0 5%; margin-bottom: 30px; } }
PdfReport.cshtml :
使用
RazorEngine.NetCore
需要修改下面两处地方删除
@model PdfReportModel
将
@Html.Raw(@style)
修改为@@Raw(@style)
视图文件:点击查看详细内容
@using exportPdf.common @model PdfReportModel <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> @{ string style = TemplateGadgetProvider.Instance.Load(@"wwwroot\css\pdfReport.css"); } <style>@Html.Raw(@style)</style> </head> <body> <div id="inner-nav"></div> <div id="container"> <div id="profile"> <div id="image"> <img id="profile-photo" src="https://img2023.cnblogs.com/blog/233608/202303/233608-20230308165653594-2049775608.jpg" alt="Profile-Image"> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fas fa-pen stroke-transparent"></i></a> </div> <p id="name">@Model.Name<br><span id="email">@Model.Email</span></p> <p id="designation">前端开发工程师<br><span id="college">天将降大任于斯人也,必先苦其心志,劳其筋骨,饿其体肤,空乏其身,行拂乱其所为也,所以动心忍性,增益其所不能。——《孟子》 </span></p> <div id="social-links"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fab fa-facebook-f stroke-transparent"></i></a><a><i class="fab fa-twitter stroke-transparent"></i></a><a><i class="fab fa-linkedin-in stroke-transparent"></i></a><a><i class="fab fa-github stroke-transparent"></i></a></div> <a id="edit-intro" href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fas fa-pen-alt blue"></i> </a> <hr width="100%"> <div id="about"> <p style="display:inline;">个人详情</p> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><i class="fas fa-pen stroke-transparent-blue"></i></a> </div> <p id="year-graduation">预计毕业年份<br><strong>2023年6月</strong></p> <p id="education">学历<br><strong>湖南大学 本科</strong></p> <p id="more-about">专业<br><strong> 计算机科学与技术专业</strong></p> <p id="telephone">电话<br><strong>0532-2271351</strong></p> <p id="fax">传真<br><strong>+91-532-25453441</strong></p> </div> <div id="info-cards"> <div class="card"> <p><i class="fas fa-briefcase stroke-transparent"></i> 专业技能</p> <ul> <li> <p class="tags">1. 熟练掌握HTML、CSS、JavaScript等前端基础技术</p> </li> <li> <p class="tags">2. 熟悉jQuery、Bootstrap等常用前端框架和库</p> </li> <li> <p class="tags">3. 了解Node.js、Express等后端开发技术</p> </li> <li> <p class="tags">4. 掌握Git、Webpack等常用开发工具</p> </li> <li> <p class="tags">5. 具备良好的编码风格和文档习惯</p> </li> </ul> </div> <div class="card"> <p><i class="fas fa-briefcase stroke-transparent"></i> 工作检验</p> <ul> <li> <p class="tags">1. 依帆网站首页制作(个人项目)<br> - 使用HTML、CSS、JavaScript实现了一个响应式的网站首页<br> - 使用Bootstrap进行布局和样式美化,使用jQuery实现轮播图和导航栏效果<br> - 使用Webpack进行打包和优化,使用Git进行版本控制和部署</p> </li> <li> <p class="tags">2. 艺风网站后台管理系统(实习项目)<br> - 参与了一个基于Node.js和Express的后台管理系统的开发<br> - 负责前端页面的编写,使用EJS模板引擎渲染数据<br> - 使用Ajax和Fetch进行数据交互,使用Element UI组件库提升用户体验<br> - 遵循MVC架构,使用Mongoose操作MongoDB数据库</p> </li> </ul> </div> <div class="card"> <p><i class="fas fa-graduation-cap stroke-transparent"></i> 自我评价</p> <ul> <li> <p class="tags">具备较强的学习能力和逻辑思维能力,喜欢接触新技术和新知识</p> </li> <li> <p class="tags">具备良好的沟通能力和团队协作能力,能够积极配合团队完成任务</p> </li> <li> <p class="tags">具备一定的创新能力和解决问题能力,能够针对不同需求提出合理方案</p> </li> </ul> <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >+ Add new</a> </div> </div> </div> </body> </html>
ViewRenderService :
public class ViewRenderService { private readonly IRazorViewEngine _razorViewEngine; private readonly ITempDataProvider _tempDataProvider; private readonly IServiceProvider _serviceProvider; public ViewRenderService(IRazorViewEngine razorViewEngine, ITempDataProvider tempDataProvider, IServiceProvider serviceProvider) { _razorViewEngine = razorViewEngine; _tempDataProvider = tempDataProvider; _serviceProvider = serviceProvider; } public async Task<string> RenderToStringAsync(string viewName, object model) { var httpContext = new DefaultHttpContext { RequestServices = _serviceProvider }; var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor()); using (var sw = new StringWriter()) { var viewResult = _razorViewEngine.FindView(actionContext, viewName, false); if (viewResult.View == null) { throw new ArgumentNullException($"{viewName} does not match any available view"); } var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary()) { Model = model }; var viewContext = new ViewContext( actionContext, viewResult.View, viewDictionary, new TempDataDictionary(actionContext.HttpContext, _tempDataProvider), sw, new HtmlHelperOptions() ); await viewResult.View.RenderAsync(viewContext); return sw.ToString(); } } }
Program.cs :
builder.Services.AddTransient<ViewRenderService>();
以上就是使用Select.HtmlToPdf.NetCore
将HTML导出为PDF的全部内容!
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