使用Select.HtmlToPdf 把html内容生成pdf文件
概述
.NET的SelectPdf Html到Pdf轉(zhuǎn)換器-社區(qū)版是.NET的SelectPdf庫(kù)中提供的功能強(qiáng)大的html到pdf轉(zhuǎn)換器的免費(fèi)版本。
轉(zhuǎn)換器提供了許多強(qiáng)大的選項(xiàng)(將任何網(wǎng)頁(yè)轉(zhuǎn)換為pdf,將任何html字符串轉(zhuǎn)換為pdf,html5 / css3 / javascript支持,頁(yè)眉和頁(yè)腳支持等),唯一的限制是它最多可以生成pdf文檔。5頁(yè)長(zhǎng)。
.NET的免費(fèi)HTML至Pdf轉(zhuǎn)換器–社區(qū)版功能:最多生成5頁(yè)pdf文檔,將任何網(wǎng)頁(yè)轉(zhuǎn)換為pdf,將任何原始html字符串轉(zhuǎn)換為pdf,設(shè)置pdf頁(yè)面設(shè)置(頁(yè)面大小,頁(yè)面方向,頁(yè)面邊距) ,在轉(zhuǎn)換過(guò)程中調(diào)整內(nèi)容大小以適合pdf頁(yè)面,設(shè)置pdf文檔屬性,設(shè)置pdf查看器首選項(xiàng),設(shè)置pdf安全性(密碼,權(quán)限),設(shè)置轉(zhuǎn)換延遲和網(wǎng)頁(yè)導(dǎo)航超時(shí),自定義頁(yè)眉和頁(yè)腳,在頁(yè)眉中支持html和頁(yè)腳,自動(dòng)和手動(dòng)分頁(yè)符,在每個(gè)頁(yè)面上重復(fù)html表頭,支持@media類(lèi)型屏幕和打印,支持內(nèi)部和外部鏈接,基于html元素自動(dòng)生成書(shū)簽,支持HTTP標(biāo)頭,支持HTTP cookie,支持需要身份驗(yàn)證的網(wǎng)頁(yè),支持代理服務(wù)器,啟用/禁用javascript,修改顏色空間,多線(xiàn)程支持,HTML5 / CSS3支持,Web字體支持等等。
代碼實(shí)現(xiàn)
1、nuget 引用?
Install-Package Select.HtmlToPdf2、方法
using SelectPdf; using System.Collections.Specialized; using System.IO; using System.Web;namespace BQoolCommon.Helpers.File {public class WebToPdf{public WebToPdf(){//SelectPdf.GlobalProperties.LicenseKey = "your-license-key";}/// <summary>/// 將 Html 轉(zhuǎn)成 PDF,並儲(chǔ)存成檔案/// </summary>/// <param name="html">html</param>/// <param name="fileName">絕對(duì)路徑</param>public void SaveToFileByHtml(string html, string fileName){var doc = SetPdfDocument(html);doc.Save(fileName);}/// <summary>/// 傳入 Url 轉(zhuǎn)成 PDF,並儲(chǔ)存成檔案/// </summary>/// <param name="url">url</param>/// <param name="fileName">絕對(duì)路徑</param>/// <param name="httpCookies">Cookies</param>public void SaveToFileByUrl(string url, string fileName, NameValueCollection httpCookies){var doc = SetPdfDocument(url, httpCookies);doc.Save(fileName);}/// <summary>/// 將 Html 轉(zhuǎn)成 PDF,並輸出成 byte[] 格式/// </summary>/// <param name="html">html</param>/// <returns></returns>public byte[] GetFileByteByHtml(string html){var doc = SetPdfDocument(html);return doc.Save();}/// <summary>/// 傳入 Url 轉(zhuǎn)成 PDF,並輸出成 byte[] 格式/// </summary>/// <param name="url">url</param>/// <param name="httpCookies">Cookies</param>/// <returns></returns>public byte[] GetFileByteByUrl(string url, NameValueCollection httpCookies){var doc = SetPdfDocument(url, httpCookies);return doc.Save();}/// <summary>/// 將 Html 轉(zhuǎn)成 PDF,並輸出成 Stream 格式/// </summary>/// <param name="html">html</param>/// <returns></returns>public Stream GetFileStreamByHtml(string html){var doc = SetPdfDocument(html);var pdfStream = new MemoryStream();doc.Save(pdfStream);pdfStream.Position = 0;return pdfStream;}/// <summary>/// 傳入 Url 轉(zhuǎn)成 PDF,並輸出成 Stream 格式/// </summary>/// <param name="html">html</param>/// <returns></returns>public Stream GetFileStreamByUrl(string url, NameValueCollection httpCookies){var doc = SetPdfDocument(url, httpCookies);var pdfStream = new MemoryStream();doc.Save(pdfStream);pdfStream.Position = 0;return pdfStream;}private PdfDocument SetPdfDocument(string html){var converter = new HtmlToPdf();converter.Options.WebPageWidth = 1200;html = HttpUtility.HtmlDecode(html);return converter.ConvertHtmlString(html);}private PdfDocument SetPdfDocument(string url, NameValueCollection httpCookies){var converter = new HtmlToPdf();converter.Options.WebPageWidth = 1200;if (httpCookies != null && httpCookies.Count != 0){converter.Options.HttpCookies.Add(httpCookies);}return converter.ConvertUrl(url);}} }3、調(diào)用
/// <summary>/// 下載pdf/// </summary>public void Downpdf(string data){var stream = new BQoolCommon.Helpers.File.WebToPdf().GetFileStreamByHtml(Gethtml(data));Response.Clear();//二進(jìn)制流數(shù)據(jù)(如常見(jiàn)的文件下載)Response.ContentType = "application/octet-stream";//通知瀏覽器下載文件而不是打開(kāi)Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode("Profit and Loss Statement.pdf", System.Text.Encoding.UTF8));var bytes = StreamToBytes(stream);Response.BinaryWrite(bytes);Response.Flush();stream.Close();stream.Dispose();Response.End();}那么如何獲取指定頁(yè)面的html 呢 傳入對(duì)應(yīng)的model? 獲得指定動(dòng)態(tài)的html
private string Gethtml(string data){string str = "";str = this.ControllerContext.RenderViewToString("ProfitDetails", data);return str;} using BQoolCommon.Helpers.Format; using Newtonsoft.Json; using OrdersManager.Models.ViewModel.Report; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Web; using System.Web.Mvc;namespace OrdersManager.Web.Infrastructure {public static class HelperExtensions{public static string RenderViewToString(this ControllerContext context, string viewName, string data){if (string.IsNullOrEmpty(viewName))viewName = context.RouteData.GetRequiredString("action");context.Controller.ViewData.Model = JsonConvert.DeserializeObject<ProfitDetailsmodel>(StringTools.Base64Decode(StringTools.Base64Decode(data)));using (var sw = new StringWriter()){ViewEngineResult viewResult = ViewEngines.Engines.FindPartialView(context, viewName);var viewContext = new ViewContext(context,viewResult.View,context.Controller.ViewData,context.Controller.TempData,sw);try{viewResult.View.Render(viewContext, sw);}catch (Exception ex){throw;}return sw.GetStringBuilder().ToString();}}} }參考文檔
https://www.nuget.org/packages/Select.HtmlToPdf/
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