C# 将页面生成pdf文件(样式不缺失)

2024-05-06 14:35:59| 来源: 网络整理

将html文本或者html网页生成pdf，我常用的2种方式：TuesPechkin wkhtmltopdf

一、使用TuesPechkin转pdf

首先引用TuesPechkin.dll，我使用的是1.0.3，也可以使用最新稳定版

代码

/// /// 将网页转为pdf文件 /// /// 文件路径/目录 /// 文件名 /// 网页url public bool ConvertWebpageToPDF(string filePath, string fileName, string url) { if (Directory.Exists(filePath) == false) Directory.CreateDirectory(filePath); try { HtmlToPdfDocument htmlToPdfDocument = new HtmlToPdfDocument(); GlobalSettings globalSettings = new GlobalSettings(); globalSettings.ProduceOutline = new bool？(true); //html网页内容的宽高 double width = 100; double.TryParse(txt_width.Text, out width); double height = 120; double.TryParse(txt_height.Text, out height); //设置pdf宽高 double proportion = 1.26; width /= proportion; height = Math.Floor(height / proportion); string Width = width.ToString(); string Height = height.ToString(); globalSettings.PaperSize = new PechkinPaperSize(Width, Height); //设置pdf文档四周空白边距 globalSettings.Margins.Top = 0; globalSettings.Margins.Right = 0; globalSettings.Margins.Bottom = 0; globalSettings.Margins.Left = 0; globalSettings.Margins.Unit = Unit.Centimeters; string pageUrl = url; ObjectSettings objectSettings = new ObjectSettings(); double value = 1; objectSettings.HtmlText = string.Empty; objectSettings.PageUrl = pageUrl; objectSettings.LoadSettings.BlockLocalFileAccess = true; objectSettings.LoadSettings.ZoomFactor = new double？(value); objectSettings.WebSettings.PrintMediaType = new bool？(true); objectSettings.WebSettings.PrintBackground = new bool？(false); htmlToPdfDocument.GlobalSettings = globalSettings; htmlToPdfDocument.Objects.Add(objectSettings); IPechkin pechkin = Factory.Create(); byte[] array = pechkin.Convert(htmlToPdfDocument); string path = string.Empty; if (array == null) { return false; } path = Path.Combine(filePath, fileName); using (FileStream fileStream = new FileStream(path, FileMode.Create)) { fileStream.Write(array, 0, array.Length); fileStream.Flush(); fileStream.Close(); FileStream fs = new FileStream(path, FileMode.Open); byte[] file = new byte[fs.Length]; fs.Read(file, 0, file.Length); fs.Close(); return true; } } catch (Exception ex) { return false; } }

二、使用TuesPechkin转pdf

wkhtmltopdf是一个插件，首先要下载https://wkhtmltopdf.org/downloads.html

下载后有使用说明：需要使用cmd安装到本地目录

代码：

public void wkhtmltopdf(string filePath, string fileName, string url) { Process p = new Process(); //wkhtmltopdf插件安装的地址 string dllstr = AppDomain.CurrentDomain.BaseDirectory + "wkhtmltopdf\wkhtmltopdf.exe"; //string dllstr = "C:\Windows\System32\wkhtmltopdf.exe"; if (System.IO.File.Exists(dllstr)) { string savepath = Path.Combine(filePath, fileName); p.StartInfo.FileName = dllstr; StringBuilder paramsBuilder = new StringBuilder(); paramsBuilder.Append("--page-width " + txt_width.Text + "mm "); paramsBuilder.Append("--zoom 1.2 "); paramsBuilder.Append("--disable-smart-shrinking "); paramsBuilder.Append("--page-height " + txt_height.Text + "mm "); paramsBuilder.Append("--margin-bottom 0mm "); paramsBuilder.Append("--margin-left 0mm "); paramsBuilder.Append("--margin-right 0mm "); paramsBuilder.Append("--margin-top 0mm "); paramsBuilder.AppendFormat(""{0}" "{1}"", url, savepath); p.StartInfo.Arguments = paramsBuilder.ToString(); //p.StartInfo.Arguments = " "" + url + "" "" + savepath + """; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardInput = true; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; p.StartInfo.CreateNoWindow = true; p.Start(); p.WaitForExit(); } }

备注：

以上2种方法生成pdf效果都非常好，css也能完美支持。

都是通过请求网页url，将整个网页生成pdf。

如果你是客户端，只有html文本，没有网页。可以先用html文本在本地生成一个html文件，本地html文件也是可以生成的pdf的哦

本地生成html文件方法可以看我另外一篇：

https://www.cnblogs.com/liuzheng0612/p/16148963.html

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