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C#使用ITextSharp操作pdf
在.NET中没有很好操作pdf的类库，如果你需要对pdf进行编辑，加密，模板打印等等都可以选择使用ITextSharp来实现。
第一步：可以点击这里下载，新版本的插件升级和之前对比主要做了这几项重大改变
1.初始化对汉字的支持
2.对页眉页脚的加载形式
第二步：制作pdf模板
可以下载Adobe Acrobat DC等任意一款pdf编辑工具，视图——工具——准备表单，可以在需要赋值的地方放上一个文本框，可以把名称修改为有意义的名称，后面在赋值时要用到。
第三步：建项目引入各个操作类
介于前段时间项目所需特意把ITextSharp进行了二次封装，使我们对pdf操作起来更加方便。
列一下各文件的作用：
CanvasRectangle.cs对Rectangle对象的基类支持，可以灵活定义一个Rectangle。
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { /// <summary> /// 画布对象 /// </summary> public class CanvasRectangle { #region CanvasRectangle属性 public float StartX { get; set; } public float StartY { get; set; } public float RectWidth { get; set; } public float RectHeight { get; set; } #endregion #region 初始化Rectangle /// <summary> /// 提供rectangle信息 /// </summary> /// <param name="startX">起点X坐标</param> /// <param name="startY">起点Y坐标</param> /// <param name="rectWidth">指定rectangle宽</param> /// <param name="rectHeight">指定rectangle高</param> public CanvasRectangle(float startX, float startY, float rectWidth, float rectHeight) { this.StartX = startX; this.StartY = startY; this.RectWidth = rectWidth; this.RectHeight = rectHeight; } #endregion #region 获取图形缩放百分比 /// <summary> /// 获取指定宽高压缩后的百分比 /// </summary> /// <param name="width">目标宽</param> /// <param name="height">目标高</param> /// <param name="containerRect">原始对象</param> /// <returns>目标与原始对象百分比</returns> public static float GetPercentage(float width, float height, CanvasRectangle containerRect) { float percentage = 0; if (height > width) { percentage = containerRect.RectHeight / height; if (width * percentage > containerRect.RectWidth) { percentage = containerRect.RectWidth / width; } } else { percentage = containerRect.RectWidth / width; if (height * percentage > containerRect.RectHeight) { percentage = containerRect.RectHeight / height; } } return percentage; } #endregion } }
PdfBase.cs主要继承PdfPageEventHelper，并实现IPdfPageEvent接口的具体实现，其实也是在pdf的加载，分页等事件中可以重写一些具体操作。
using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { public class PdfBase : PdfPageEventHelper { #region 属性 private String _fontFilePathForHeaderFooter = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "SIMHEI.TTF"); /// <summary> /// 页眉/页脚所用的字体 /// </summary> public String FontFilePathForHeaderFooter { get { return _fontFilePathForHeaderFooter; } set { _fontFilePathForHeaderFooter = value; } } private String _fontFilePathForBody = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "SIMSUN.TTC,1"); /// <summary> /// 正文内容所用的字体 /// </summary> public String FontFilePathForBody { get { return _fontFilePathForBody; } set { _fontFilePathForBody = value; } } private PdfPTable _header; /// <summary> /// 页眉 /// </summary> public PdfPTable Header { get { return _header; } private set { _header = value; } } private PdfPTable _footer; /// <summary> /// 页脚 /// </summary> public PdfPTable Footer { get { return _footer; } private set { _footer = value; } } private BaseFont _baseFontForHeaderFooter; /// <summary> /// 页眉页脚所用的字体 /// </summary> public BaseFont BaseFontForHeaderFooter { get { return _baseFontForHeaderFooter; } set { _baseFontForHeaderFooter = value; } } private BaseFont _baseFontForBody; /// <summary> /// 正文所用的字体 /// </summary> public BaseFont BaseFontForBody { get { return _baseFontForBody; } set { _baseFontForBody = value; } } private Document _document; /// <summary> /// PDF的Document /// </summary> public Document Document { get { return _document; } private set { _document = value; } } #endregion public override void OnOpenDocument(PdfWriter writer, Document document) { try { BaseFontForHeaderFooter = BaseFont.CreateFont(FontFilePathForHeaderFooter, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); BaseFontForBody = BaseFont.CreateFont(FontFilePathForBody, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); document.Add(new Phrase("\n\n")); Document = document; } catch (DocumentException de) { } catch (System.IO.IOException ioe) { } } #region GenerateHeader /// <summary> /// 生成页眉 /// </summary> /// <param name="writer"></param> /// <returns></returns> public virtual PdfPTable GenerateHeader(iTextSharp.text.pdf.PdfWriter writer) { return null; } #endregion #region GenerateFooter /// <summary> /// 生成页脚 /// </summary> /// <param name="writer"></param> /// <returns></returns> public virtual PdfPTable GenerateFooter(iTextSharp.text.pdf.PdfWriter writer) { return null; } #endregion public override void OnEndPage(iTextSharp.text.pdf.PdfWriter writer, iTextSharp.text.Document document) { base.OnEndPage(writer, document); //输出页眉 Header = GenerateHeader(writer); Header.TotalWidth = document.PageSize.Width - 20f; ///调用PdfTable的WriteSelectedRows方法。该方法以第一个参数作为开始行写入。 ///第二个参数-1表示没有结束行，并且包含所写的所有行。 ///第三个参数和第四个参数是开始写入的坐标x和y. Header.WriteSelectedRows(0, -1, 10, document.PageSize.Height - 20, writer.DirectContent); //输出页脚 Footer = GenerateFooter(writer); Footer.TotalWidth = document.PageSize.Width - 20f; Footer.WriteSelectedRows(0, -1, 10, document.PageSize.GetBottom(50), writer.DirectContent); } } }
PdfImage.cs对图像文件的操作
using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { /// <summary> /// pdf图片操作类 /// </summary> public class PdfImage { #region PdfImage属性 /// <summary> /// 图片URL地址 /// </summary> public string ImageUrl { get; set; } /// <summary> /// 图片域宽 /// </summary> public float FitWidth { get; set; } /// <summary> /// 图片域高 /// </summary> public float FitHeight { get; set; } /// <summary> /// 绝对X坐标 /// </summary> public float AbsoluteX { get; set; } /// <summary> /// 绝对Y坐标 /// </summary> public float AbsoluteY { get; set; } /// <summary> /// Img内容 /// </summary> public byte[] ImgBytes { get; set; } /// <summary> /// 是否缩放 /// </summary> public bool ScaleParent { get; set; } /// <summary> /// 画布对象 /// </summary> public CanvasRectangle ContainerRect { get; set; } #endregion #region PdfImage构造 /// <summary> /// 网络图片写入 /// </summary> /// <param name="imageUrl">图片URL地址</param> /// <param name="fitWidth"></param> /// <param name="fitHeight"></param> /// <param name="absolutX"></param> /// <param name="absoluteY"></param> /// <param name="scaleParent"></param> public PdfImage(string imageUrl, float fitWidth, float fitHeight, float absolutX, float absoluteY, bool scaleParent) { this.ImageUrl = imageUrl; this.FitWidth = fitWidth; this.FitHeight = fitHeight; this.AbsoluteX = absolutX; this.AbsoluteY = absoluteY; this.ScaleParent = scaleParent; } /// <summary> /// 本地文件写入 /// </summary> /// <param name="imageUrl">图片URL地址</param> /// <param name="fitWidth"></param> /// <param name="fitHeight"></param> /// <param name="absolutX"></param> /// <param name="absoluteY"></param> /// <param name="scaleParent"></param> /// <param name="imgBytes"></param> public PdfImage(string imageUrl, float fitWidth, float fitHeight, float absolutX, float absoluteY, bool scaleParent, byte[] imgBytes) { this.ImageUrl = imageUrl; this.FitWidth = fitWidth; this.FitHeight = fitHeight; this.AbsoluteX = absolutX; this.AbsoluteY = absoluteY; this.ScaleParent = scaleParent; this.ImgBytes = imgBytes; } #endregion #region 指定pdf模板文件添加图片 /// <summary> /// 指定pdf模板文件添加图片 /// </summary> /// <param name="tempFilePath"></param> /// <param name="createdPdfPath"></param> /// <param name="pdfImages"></param> public void PutImages(string tempFilePath, string createdPdfPath, List<PdfImage> pdfImages) { PdfReader pdfReader = null; PdfStamper pdfStamper = null; try { pdfReader = new PdfReader(tempFilePath); pdfStamper = new PdfStamper(pdfReader, new FileStream(createdPdfPath, FileMode.OpenOrCreate)); var pdfContentByte = pdfStamper.GetOverContent(1);//获取PDF指定页面内容 foreach (var pdfImage in pdfImages) { Uri uri = null; Image img = null; var imageUrl = pdfImage.ImageUrl; //如果使用网络路径则先将图片转化位绝对路径 if (imageUrl.StartsWith("http")) { //var absolutePath = Path.Combine(System.Web.HttpContext.Current.Server.MapPath(".."), imageUrl); var absolutePath = System.Web.HttpContext.Current.Server.MapPath("..") + imageUrl; uri = new Uri(absolutePath); img = Image.GetInstance(uri); } else { //如果直接使用图片文件则直接创建iTextSharp的Image对象 if (pdfImage.ImgBytes != null) { img = Image.GetInstance(new MemoryStream(pdfImage.ImgBytes)); } } if (img != null) { if (pdfImage.ScaleParent) { var containerRect = pdfImage.ContainerRect; float percentage = 0.0f; percentage =CanvasRectangle.GetPercentage(img.Width, img.Height, containerRect); img.ScalePercent(percentage * 100); pdfImage.AbsoluteX = (containerRect.RectWidth - img.Width * percentage) / 2 + containerRect.StartX; pdfImage.AbsoluteY = (containerRect.RectHeight - img.Height * percentage) / 2 + containerRect.StartY; } else { img.ScaleToFit(pdfImage.FitWidth, pdfImage.FitHeight); } img.SetAbsolutePosition(pdfImage.AbsoluteX, pdfImage.AbsoluteY); pdfContentByte.AddImage(img); } } pdfStamper.FormFlattening = true; } catch (Exception ex) { throw ex; } finally { if (pdfStamper != null) { pdfStamper.Close(); } if (pdfReader != null) { pdfReader.Close(); } pdfStamper = null; pdfReader = null; } } #endregion } }
PdfPageMerge.cs对pdf文件及文件、各种文件格式文件内容进行合并。
using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { public class PdfPageMerge { private PdfWriter pw; private PdfReader reader; private Document document; private PdfContentByte cb; private PdfImportedPage newPage; private FileStream fs; /// <summary> /// 通过输出文件来构建合并管理，合并到新增文件中,合并完成后调用FinishedMerge方法 /// </summary> /// <param name="sOutFiles">输出文件</param> public PdfPageMerge(string sOutFiles) { document = new Document(PageSize.A4); fs=new FileStream(sOutFiles, FileMode.Create); pw = PdfWriter.GetInstance(document, fs); document.Open(); cb = pw.DirectContent; } /// <summary> /// 通过文件流来合并文件，合并到当前的可写流中，合并完成后调用FinishedMerge方法 /// </summary> /// <param name="sm"></param> public PdfPageMerge(Stream sm) { document = new Document(); pw = PdfWriter.GetInstance(document, sm); document.Open(); cb = pw.DirectContent; } /// <summary> /// 合并文件 /// </summary> /// <param name="sFiles">需要合并的文件路径名称</param> /// <returns></returns> public bool MergeFile(string sFiles) { reader = new PdfReader(sFiles); { int iPageNum = reader.NumberOfPages; for (int j = 1; j <= iPageNum; j++) { newPage = pw.GetImportedPage(reader, j); //Rectangle r = reader.GetPageSize(j); Rectangle r = reader.GetPageSizeWithRotation(j); document.SetPageSize(r); cb.AddTemplate(newPage, 0, 0); document.NewPage(); } } reader.Close(); return true; } /// <summary> /// 通过字节数据合并文件 /// </summary> /// <param name="pdfIn">PDF字节数据</param> /// <returns></returns> public bool MergeFile(byte[] pdfIn) { reader = new PdfReader(pdfIn); { int iPageNum = reader.NumberOfPages; for (int j = 1; j <= iPageNum; j++) { newPage = pw.GetImportedPage(reader, j); Rectangle r = reader.GetPageSize(j); document.SetPageSize(r); document.NewPage(); cb.AddTemplate(newPage, 0, 0); } } reader.Close(); return true; } /// <summary> /// 通过PDF文件流合并文件 /// </summary> /// <param name="pdfStream">PDF文件流</param> /// <returns></returns> public bool MergeFile(Stream pdfStream) { reader = new PdfReader(pdfStream); { int iPageNum = reader.NumberOfPages; for (int j = 1; j <= iPageNum; j++) { newPage = pw.GetImportedPage(reader, j); Rectangle r = reader.GetPageSize(j); document.SetPageSize(r); document.NewPage(); cb.AddTemplate(newPage, 0, 0); } } reader.Close(); return true; } /// <summary> /// 通过网络地址来合并文件 /// </summary> /// <param name="pdfUrl">需要合并的PDF的网络路径</param> /// <returns></returns> public bool MergeFile(Uri pdfUrl) { reader = new PdfReader(pdfUrl); { int iPageNum = reader.NumberOfPages; for (int j = 1; j <= iPageNum; j++) { newPage = pw.GetImportedPage(reader, j); Rectangle r = reader.GetPageSize(j); document.SetPageSize(r); document.NewPage(); cb.AddTemplate(newPage, 0, 0); } } reader.Close(); return true; } /// <summary> /// 完成合并 /// </summary> public void FinishedMerge() { try { if (reader != null) { reader.Close(); } if (pw != null) { pw.Flush(); pw.Close(); } if (fs != null) { fs.Flush(); fs.Close(); } if (document.IsOpen()) { document.Close(); } } catch { } } public static string AddCommentsToFile(string fileName,string outfilepath, string userComments, PdfPTable newTable) { string outputFileName = outfilepath; //Step 1: Create a Docuement-Object Document document = new Document(); try { //Step 2: we create a writer that listens to the document PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(outputFileName, FileMode.Create)); //Step 3: Open the document document.Open(); PdfContentByte cb = writer.DirectContent; //The current file path string filename = fileName; // we create a reader for the document PdfReader reader = new PdfReader(filename); for (int pageNumber = 1; pageNumber < reader.NumberOfPages + 1; pageNumber++) { document.SetPageSize(reader.GetPageSizeWithRotation(1)); document.NewPage(); //Insert to Destination on the first page if (pageNumber == 1) { Chunk fileRef = new Chunk(" "); fileRef.SetLocalDestination(filename); document.Add(fileRef); } PdfImportedPage page = writer.GetImportedPage(reader, pageNumber); int rotation = reader.GetPageRotation(pageNumber); if (rotation == 90 || rotation == 270) { cb.AddTemplate(page, 0, -1f, 1f, 0, 0, reader.GetPageSizeWithRotation(pageNumber).Height); } else { cb.AddTemplate(page, 1f, 0, 0, 1f, 0, 0); } } // Add a new page to the pdf file document.NewPage(); Paragraph paragraph = new Paragraph(); Font titleFont = new Font(iTextSharp.text.Font.FontFamily.HELVETICA , 15 , iTextSharp.text.Font.BOLD , BaseColor.BLACK ); Chunk titleChunk = new Chunk("Comments", titleFont); paragraph.Add(titleChunk); document.Add(paragraph); paragraph = new Paragraph(); Font textFont = new Font(iTextSharp.text.Font.FontFamily.HELVETICA , 12 , iTextSharp.text.Font.NORMAL , BaseColor.BLACK ); Chunk textChunk = new Chunk(userComments, textFont); paragraph.Add(textChunk); document.Add(paragraph); document.Add(newTable); } catch (Exception e) { throw e; } finally { document.Close(); } return outputFileName; } } }
PdfTable.cs对表格插入做支持，可以在表格插入时动态生成新页并可以为每页插入页眉页脚
using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Xml; namespace PDFReport { /// <summary> /// Pdf表格操作类 /// </summary> public class PdfTable:PdfBase { /// <summary> /// 向PDF中动态插入表格，表格内容按照htmltable标记格式插入 /// </summary> /// <param name="pdfTemplate">pdf模板路径</param> /// <param name="tempFilePath">pdf导出路径</param> /// <param name="parameters">table标签</param> public void PutTable(string pdfTemplate, string tempFilePath, string parameter) { Document doc = new Document(); try { if (File.Exists(tempFilePath)) { File.Delete(tempFilePath); } doc = new Document(PageSize.LETTER); FileStream temFs = new FileStream(tempFilePath, FileMode.OpenOrCreate); PdfWriter PWriter = PdfWriter.GetInstance(doc,temFs); PdfTable pagebase = new PdfTable(); PWriter.PageEvent = pagebase;//添加页眉页脚 BaseFont bf1 = BaseFont.CreateFont("C:\\Windows\\Fonts\\SIMSUN.TTC,1", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); iTextSharp.text.Font CellFont = new iTextSharp.text.Font(bf1, 12); doc.Open(); PdfContentByte cb = PWriter.DirectContent; PdfReader reader = new PdfReader(pdfTemplate); for (int pageNumber = 1; pageNumber < reader.NumberOfPages+1 ; pageNumber++) { doc.SetPageSize(reader.GetPageSizeWithRotation(1)); PdfImportedPage page = PWriter.GetImportedPage(reader, pageNumber); int rotation = reader.GetPageRotation(pageNumber); cb.AddTemplate(page, 1f, 0, 0, 1f, 0, 0); doc.NewPage(); } XmlDocument xmldoc = new XmlDocument(); xmldoc.LoadXml(parameter); XmlNodeList xnlTable = xmldoc.SelectNodes("table"); if (xnlTable.Count > 0) { foreach (XmlNode xn in xnlTable) { //添加表格与正文之间间距 doc.Add(new Phrase("\n\n")); // 由html标记和属性解析表格样式 var xmltr = xn.SelectNodes("tr"); foreach (XmlNode xntr in xmltr) { var xmltd = xntr.SelectNodes("td"); PdfPTable newTable = new PdfPTable(xmltd.Count); foreach (XmlNode xntd in xmltd) { PdfPCell newCell = new PdfPCell(new Paragraph(1, xntd.InnerText, CellFont)); newTable.AddCell(newCell);//表格添加内容 var tdStyle = xntd.Attributes["style"];//获取单元格样式 if (tdStyle != null) { string[] styles = tdStyle.Value.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries); Dictionary<string, string> dicStyle = new Dictionary<string, string>(); foreach (string strpar in styles) { string[] keyvalue=http://www.mamicode.com/strpar.Split(new string[] { ":" }, StringSplitOptions.RemoveEmptyEntries); dicStyle.Add(keyvalue[0], keyvalue[1]); } //设置单元格宽度 if (dicStyle.Select(sty => sty.Key.ToLower().Equals("width")).Count() > 0) { newCell.Width =float.Parse(dicStyle["width"]); } //设置单元格高度 if (dicStyle.Select(sty => sty.Key.ToLower().Equals("height")).Count() > 0) { //newCell.Height = float.Parse(dicStyle["height"]); } } } doc.Add(newTable); } } } doc.Close(); temFs.Close(); PWriter.Close(); } catch (Exception ex) { throw ex; } finally { doc.Close(); } } #region GenerateHeader /// <summary> /// 生成页眉 /// </summary> /// <param name="writer"></param> /// <returns></returns> public override PdfPTable GenerateHeader(iTextSharp.text.pdf.PdfWriter writer) { BaseFont baseFont = BaseFontForHeaderFooter; iTextSharp.text.Font font_logo = new iTextSharp.text.Font(baseFont, 18, iTextSharp.text.Font.BOLD); iTextSharp.text.Font font_header1 = new iTextSharp.text.Font(baseFont, 10, iTextSharp.text.Font.BOLD); iTextSharp.text.Font font_header2 = new iTextSharp.text.Font(baseFont, 10, iTextSharp.text.Font.BOLD); iTextSharp.text.Font font_headerContent = new iTextSharp.text.Font(baseFont, 10, iTextSharp.text.Font.NORMAL); float[] widths = new float[] { 355, 50, 90, 15, 20, 15 }; PdfPTable header = new PdfPTable(widths); PdfPCell cell = new PdfPCell(); cell.BorderWidthBottom = 2; cell.BorderWidthLeft = 2; cell.BorderWidthTop = 2; cell.BorderWidthRight = 2; cell.FixedHeight = 35; cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_LEFT); //Image img = Image.GetInstance("http://simg.instrument.com.cn/home/20141224/images/200_50logo.gif"); //img.ScaleToFit(100f, 20f); //cell.Image = img; cell.Phrase = new Phrase("LOGO", font_logo); cell.HorizontalAlignment = iTextSharp.text.Element.ALIGN_CENTER; cell.VerticalAlignment = iTextSharp.text.Element.ALIGN_CENTER; cell.PaddingTop = -1; header.AddCell(cell); //cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_LEFT); //cell.Phrase = new Paragraph("PDF报表", font_header1); //header.AddCell(cell); cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_RIGHT); cell.Phrase = new Paragraph("日期:", font_header2); header.AddCell(cell); cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_LEFT); cell.Phrase = new Paragraph(DateTime.Now.ToString("yyyy-MM-dd"), font_headerContent); header.AddCell(cell); cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_RIGHT); cell.Phrase = new Paragraph("第", font_header2); header.AddCell(cell); cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_CENTER); cell.Phrase = new Paragraph(writer.PageNumber.ToString(), font_headerContent); header.AddCell(cell); cell = GenerateOnlyBottomBorderCell(2, iTextSharp.text.Element.ALIGN_RIGHT); cell.Phrase = new Paragraph("页", font_header2); header.AddCell(cell); return header; } #region /// <summary> /// 生成只有底边的cell /// </summary> /// <param name="bottomBorder"></param> /// <param name="horizontalAlignment">水平对齐方式<see cref="iTextSharp.text.Element"/></param> /// <returns></returns> private PdfPCell GenerateOnlyBottomBorderCell(int bottomBorder,int horizontalAlignment) { PdfPCell cell = GenerateOnlyBottomBorderCell(bottomBorder, horizontalAlignment, iTextSharp.text.Element.ALIGN_BOTTOM); cell.PaddingBottom = 5; return cell; } /// <summary> /// 生成只有底边的cell /// </summary> /// <param name="bottomBorder"></param> /// <param name="horizontalAlignment">水平对齐方式<see cref="iTextSharp.text.Element"/></param> /// <param name="verticalAlignment">垂直对齐方式<see cref="iTextSharp.text.Element"/</param> /// <returns></returns> private PdfPCell GenerateOnlyBottomBorderCell(int bottomBorder,int horizontalAlignment,int verticalAlignment) { PdfPCell cell = GenerateOnlyBottomBorderCell(bottomBorder); cell.HorizontalAlignment = horizontalAlignment; cell.VerticalAlignment = verticalAlignment; ; return cell; } /// <summary> /// 生成只有底边的cell /// </summary> /// <param name="bottomBorder"></param> /// <returns></returns> private PdfPCell GenerateOnlyBottomBorderCell(int bottomBorder) { PdfPCell cell = new PdfPCell(); cell.BorderWidthBottom = 2; cell.BorderWidthLeft = 0; cell.BorderWidthTop = 0; cell.BorderWidthRight = 0; return cell; } #endregion #endregion #region GenerateFooter public override PdfPTable GenerateFooter(iTextSharp.text.pdf.PdfWriter writer) { BaseFont baseFont = BaseFontForHeaderFooter; iTextSharp.text.Font font = new iTextSharp.text.Font(baseFont, 10, iTextSharp.text.Font.NORMAL); PdfPTable footer = new PdfPTable(new float[]{1,1,2,1}); AddFooterCell(footer, "电话:010-51654077-8039", font); AddFooterCell(footer, "传真:010-82051730", font); AddFooterCell(footer, "电子邮件:yangdd@instrument.com.cn", font); AddFooterCell(footer, "联系人:杨丹丹", font); return footer; } private void AddFooterCell(PdfPTable foot, String text, iTextSharp.text.Font font) { PdfPCell cell = new PdfPCell(); cell.BorderWidthTop = 2; cell.BorderWidthRight = 0; cell.BorderWidthBottom = 0; cell.BorderWidthLeft = 0; cell.Phrase = new Phrase(text, font); cell.HorizontalAlignment = iTextSharp.text.Element.ALIGN_CENTER; foot.AddCell(cell); } #endregion } }
PdfText.cs对pdf模板上的表单进行赋值，并生成新的pdf
using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { /// <summary> /// pdf文本域操作类 /// </summary> public class PdfText { #region pdf模板文本域复制 /// <summary> /// 指定pdf模板为其文本域赋值 /// </summary> /// <param name="pdfTemplate">pdf模板路径</param> /// <param name="tempFilePath">pdf导出路径</param> /// <param name="parameters">pdf模板域键值</param> public void PutText(string pdfTemplate, string tempFilePath, Dictionary<string, string> parameters) { PdfReader pdfReader = null; PdfStamper pdfStamper = null; try { if (File.Exists(tempFilePath)) { File.Delete(tempFilePath); } pdfReader = new PdfReader(pdfTemplate); pdfStamper = new PdfStamper(pdfReader, new FileStream(tempFilePath, FileMode.OpenOrCreate)); AcroFields pdfFormFields = pdfStamper.AcroFields; pdfStamper.FormFlattening = true; BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED); BaseFont simheiBase = BaseFont.CreateFont(@"C:\Windows\Fonts\simhei.ttf", BaseFont.IDENTITY_H, BaseFont.EMBEDDED); pdfFormFields.AddSubstitutionFont(simheiBase); foreach (KeyValuePair<string, string> parameter in parameters) { if (pdfFormFields.Fields[parameter.Key] != null) { pdfFormFields.SetField(parameter.Key, parameter.Value); } } } catch (Exception ex) { throw ex; } finally { pdfStamper.Close(); pdfReader.Close(); pdfStamper = null; pdfReader = null; } } #endregion } }
PdfWatermark.cs可以为pdf文档添加文字和图片水印
using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; namespace PDFReport { /// <summary> /// pdf水银操作 /// </summary> public class PdfWatermark { #region 添加普通偏转角度文字水印 /// <summary> /// 添加普通偏转角度文字水印 /// </summary> /// <param name="inputfilepath">需要添加水印的pdf文件</param> /// <param name="outputfilepath">添加水印后输出的pdf文件</param> /// <param name="waterMarkName">水印内容</param> public void setWatermark(string inputfilepath, string outputfilepath, string waterMarkName) { PdfReader pdfReader = null; PdfStamper pdfStamper = null; try { if (File.Exists(outputfilepath)) { File.Delete(outputfilepath); } pdfReader = new PdfReader(inputfilepath); pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.OpenOrCreate)); int total = pdfReader.NumberOfPages + 1; iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1); float width = psize.Width; float height = psize.Height; PdfContentByte content; BaseFont font = BaseFont.CreateFont(@"C:\WINDOWS\Fonts\SIMFANG.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED); PdfGState gs = new PdfGState(); for (int i = 1; i < total; i++) { content = pdfStamper.GetOverContent(i);//在内容上方加水印 //content = pdfStamper.GetUnderContent(i);//在内容下方加水印 //透明度 gs.FillOpacity = 0.3f; content.SetGState(gs); //content.SetGrayFill(0.3f); //开始写入文本 content.BeginText(); content.SetColorFill(BaseColor.LIGHT_GRAY); content.SetFontAndSize(font, 100); content.SetTextMatrix(0, 0); content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 - 50, height / 2 - 50, 55); //content.SetColorFill(BaseColor.BLACK); //content.SetFontAndSize(font, 8); //content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, 0, 0, 0); content.EndText(); } } catch (Exception ex) { throw ex; } finally { if (pdfStamper != null) pdfStamper.Close(); if (pdfReader != null) pdfReader.Close(); } } #endregion #region 添加倾斜水印，并加密文档 /// <summary> /// 添加倾斜水印，并加密文档 /// </summary> /// <param name="inputfilepath">需要添加水印的pdf文件</param> /// <param name="outputfilepath">添加水印后输出的pdf文件</param> /// <param name="waterMarkName">水印内容</param> /// <param name="userPassWord">用户密码</param> /// <param name="ownerPassWord">作者密码</param> /// <param name="permission">许可等级</param> public void setWatermark(string inputfilepath, string outputfilepath, string waterMarkName, string userPassWord, string ownerPassWord, int permission) { PdfReader pdfReader = null; PdfStamper pdfStamper = null; try { pdfReader = new PdfReader(inputfilepath); pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.OpenOrCreate)); // 设置密码 //pdfStamper.SetEncryption(false,userPassWord, ownerPassWord, permission); int total = pdfReader.NumberOfPages + 1; PdfContentByte content; BaseFont font = BaseFont.CreateFont(@"C:\WINDOWS\Fonts\SIMFANG.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED); PdfGState gs = new PdfGState(); gs.FillOpacity = 0.2f;//透明度 int j = waterMarkName.Length; char c; int rise = 0; for (int i = 1; i < total; i++) { rise = 500; content = pdfStamper.GetOverContent(i);//在内容上方加水印 //content = pdfStamper.GetUnderContent(i);//在内容下方加水印 content.BeginText(); content.SetColorFill(BaseColor.DARK_GRAY); content.SetFontAndSize(font, 50); // 设置水印文字字体倾斜 开始 if (j >= 15) { content.SetTextMatrix(200, 120); for (int k = 0; k < j; k++) { content.SetTextRise(rise); c = waterMarkName[k]; content.ShowText(c + ""); rise -= 20; } } else { content.SetTextMatrix(180, 100); for (int k = 0; k < j; k++) { content.SetTextRise(rise); c = waterMarkName[k]; content.ShowText(c + ""); rise -= 18; } } // 字体设置结束 content.EndText(); // 画一个圆 //content.Ellipse(250, 450, 350, 550); //content.SetLineWidth(1f); //content.Stroke(); } } catch (Exception ex) { throw ex; } finally { if (pdfStamper != null) pdfStamper.Close(); if (pdfReader != null) pdfReader.Close(); } } #endregion #region 加图片水印 /// <summary> /// 加图片水印 /// </summary> /// <param name="inputfilepath"></param> /// <param name="outputfilepath"></param> /// <param name="ModelPicName"></param> /// <param name="top"></param> /// <param name="left"></param> /// <returns></returns> public bool PDFWatermark(string inputfilepath, string outputfilepath, string ModelPicName, float top, float left) { PdfReader pdfReader = null; PdfStamper pdfStamper = null; try { pdfReader = new PdfReader(inputfilepath); int numberOfPages = pdfReader.NumberOfPages; iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1); float width = psize.Width; float height = psize.Height; pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.OpenOrCreate)); PdfContentByte waterMarkContent; iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(ModelPicName); image.GrayFill = 80;//透明度，灰色填充 //image.Rotation = 40;//旋转 image.RotationDegrees = 40;//旋转角度 //水印的位置 if (left < 0) { left = width / 2 - image.Width + left; } //image.SetAbsolutePosition(left, (height - image.Height) - top); image.SetAbsolutePosition(left, (height / 2 - image.Height) - top); //每一页加水印,也可以设置某一页加水印 for (int i = 1; i <= numberOfPages; i++) { waterMarkContent = pdfStamper.GetUnderContent(i);//内容下层加水印 //waterMarkContent = pdfStamper.GetOverContent(i);//内容上层加水印 waterMarkContent.AddImage(image); } //strMsg = "success"; return true; } catch (Exception ex) { throw ex; } finally { if (pdfStamper != null) pdfStamper.Close(); if (pdfReader != null) pdfReader.Close(); } } #endregion } }
PdfPage.aspx.cs页面调用
using PDFReport; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace CreatePDF { public partial class PdfPage : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } #region 默认文档 protected void defaultpdf_Click(object sender, EventArgs e) { iframepdf.Attributes["src"] = "../PDFTemplate/pdfTemplate.pdf"; } #endregion #region 文字域 protected void CreatePdf_Click(object sender, EventArgs e) { string pdfTemplate = Server.MapPath("~/PDFTemplate/pdfTemplate.pdf"); string newpdf = Server.MapPath("~/PDFTemplate/newpdf.pdf"); //追加文本########## Dictionary<string, string> dicPra = new Dictionary<string, string>(); dicPra.Add("HTjiafang", "北京美嘉生物科技有限公司111111"); dicPra.Add("Total", "1370000000000000"); dicPra.Add("TotalDaXie", "壹万叁仟柒佰元整"); dicPra.Add("Date", "2017年12月12日前付款3000元，2018年1月10日前付余款10700元"); new PdfText().PutText(pdfTemplate, newpdf, dicPra); iframepdf.Attributes["src"]="../PDFTemplate/newpdf.pdf"; //Response.Write("<script> alert(‘已生成pdf‘);</script>"); } #endregion #region 普通水印 protected void WaterMark_Click(object sender, EventArgs e) { string pdfTemplate = Server.MapPath("~/PDFTemplate/pdfTemplate.pdf"); string newpdf = Server.MapPath("~/PDFTemplate/newpdf1.pdf"); //添加水印############ new PdfWatermark().setWatermark(pdfTemplate, newpdf, "仪器信息网"); iframepdf.Attributes["src"] = "../PDFTemplate/newpdf1.pdf"; //Response.Write("<script> alert(‘已生成pdf‘);</script>"); } #endregion #region 图片水印 protected void WaterMarkPic_Click(object sender, EventArgs e) { string pdfTemplate = Server.MapPath("~/PDFTemplate/pdfTemplate.pdf"); string newpdf = Server.MapPath("~/PDFTemplate/newpdf2.pdf"); //添加图片水印############ new PdfWatermark().PDFWatermark(pdfTemplate, newpdf, Server.MapPath("~/Images/200_50logo.gif"), 0, 0); iframepdf.Attributes["src"] = "../PDFTemplate/newpdf2.pdf"; //Response.Write("<script> alert(‘已生成pdf‘);</script>"); } #endregion #region 添加印章 protected void PdfImg_Click(object sender, EventArgs e) { string pdfTemplate = Server.MapPath("~/PDFTemplate/pdfTemplate.pdf"); string newpdf = Server.MapPath("~/PDFTemplate/newpdf3.pdf"); //追加图片############# FileStream fs = new FileStream(Server.MapPath("~/Images/yinzhang.png"), FileMode.Open); byte[] byData = http://www.mamicode.com/new byte[fs.Length]; fs.Read(byData, 0, byData.Length); fs.Close(); PdfImage pdfimg = new PdfImage("", 100f, 100f, 400f, 470f, false, byData); List<PdfImage> listimg = new List<PdfImage>(); listimg.Add(pdfimg); pdfimg.PutImages(pdfTemplate, newpdf, listimg); iframepdf.Attributes["src"] = "../PDFTemplate/newpdf3.pdf"; //Response.Write("<script> alert(‘已生成pdf‘);</script>"); } #endregion #region 添加表格 protected void PdfTable_Click(object sender, EventArgs e) { string pdfTemplate = Server.MapPath("~/PDFTemplate/pdfTemplate.pdf"); string newpdf = Server.MapPath("~/PDFTemplate/newpdf4.pdf"); //追加表格############ StringBuilder tableHtml = new StringBuilder(); tableHtml.Append(@"<table> <tr><td>项目</td><td>细类</td><td>价格</td><td>数量</td><td>投放时间</td><td>金额</td></tr> <tr><td>钻石会员</td><td>基础服务</td><td>69800元/月</td><td>1年</td><td>2016.01.03-2017.01.02</td><td>69800</td></tr> <tr><td>核酸纯化系统专场</td><td>金榜题名</td><td>70000元/月</td><td>1年</td><td>2016.01.03-2017.01.02</td><td>7000</td></tr> </table>"); new PdfTable().PutTable(pdfTemplate, newpdf, tableHtml.ToString()); iframepdf.Attributes["src"] = "../PDFTemplate/newpdf4.pdf"; //Response.Write("<script> alert(‘已生成pdf‘);</script>"); } #endregion } }
C#使用ITextSharp操作pdf
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