C#生成PDF文件流

时间：2021-09-10 02:53:59

1。设置字体

 static BaseFont FontBase = BaseFont.CreateFont("C:\\WINDOWS\\FONTS\\STSONG.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);

         static iTextSharp.text.Font bodyFont = new iTextSharp.text.Font(FontBase, );

         static iTextSharp.text.Font titleFont = new iTextSharp.text.Font(FontBase, );

         static iTextSharp.text.Font paragraphFont = new iTextSharp.text.Font(FontBase, );

         static iTextSharp.text.Font linkFont = new iTextSharp.text.Font(FontBase, , Font.UNDERLINE, BaseColor.BLUE);

2.生成PDF文件流返回byte数组

 public byte[] DocCreate(System.Drawing.Image image, List<TreeNodes> list)

        {

            MemoryStream file = new MemoryStream();

            string fileName = string.Empty;

            Rectangle page = PageSize.A4;

            float y = page.Height;

            Document document = new Document(page, , , , );

            float docWidth = page.Width -  * ;

            float docHeight = page.Height - document.BottomMargin - document.TopMargin;

            PdfWriter writer = PdfWriter.GetInstance(document, file);

            writer.CloseStream = false;

            writer.Open();

            PdfContentByte cb = writer.DirectContent;

            document.Open();

            //标题

            Paragraph title = new Paragraph(new Chunk("标题", titleFont));

            title.Alignment = Element.ALIGN_CENTER;

            document.Add(title);

            //图片

            iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(image, ImageFormat.Png);

            float widthSzie = (page.Width - ) / img.Width;

            if (widthSzie < )

            {

                img.ScalePercent(widthSzie * );

            }

            document.Add(img);

            //文献出处

            Paragraph p2 = new Paragraph(new Chunk("出处", paragraphFont));

            p2.IndentationLeft = indentationLeft;

            document.Add(p2);

            InitData(list);//初始化业务数据

            CreateSteps(list, document, list.FirstOrDefault(it => it.PID == ));//添加业务数据

            ////添加印章

            //iTextSharp.text.Image whyz = iTextSharp.text.Image.GetInstance(whyzPath);

            //whyz.ScalePercent(50);

            //whyz.PaddingTop = 100;

            //whyz.Alignment = Element.ALIGN_RIGHT;

            //document.Add(whyz);

            //添加日期

            Paragraph createtime = new Paragraph(new Chunk(DateTime.Now.ToLongDateString().ToString(), bodyFont));

            createtime.Alignment = Element.ALIGN_RIGHT;

            //createtime.SpacingBefore = -80;

            createtime.PaddingTop = ;

            document.Add(createtime);

            document.Close();

            file.Position = ;

            MemoryStream newfile = SetWaterMark(file, "水印内容", docWidth, docHeight);//添加水印，见另外一篇博客

            newfile.Position = ;//重置流指针位置

            byte[] bytes = new byte[newfile.Length];

            newfile.Read(bytes, , bytes.Length);

            return bytes;

        }

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