Question

我正在尝试使用iTextSharp生成PDF文件，因此我设法生成我的PDF文件，如下所示：

enter image description here

这是我的代码：

在我的控制器中，我从String（JSON格式）获取数据＆lt; ---- String screendata：

[HttpPost]
public void GenaraleExportPDF(String screendata,String monTitre,String file)
{
    ExportManager export = new ExportManager();

    String MapPath = Server.MapPath("~/Content/");

    string filepath = MapPath + file;

    //Appel Methodes Export Manager pour generer PDF
    export.GenererPdfJSON(screendata, monTitre, MapPath, file);

    //Ajout Response : transmitfile self buffers
    Response.Buffer = false;
    Response.Clear();
    Response.ClearContent();
    Response.ClearHeaders();
    Response.ContentType = "application/pdf";
    Response.AddHeader("Content-Disposition", "attachment; filename=" + file);
    Response.TransmitFile(filepath);
    Response.End();
}

其他功能：

生成表格的标题和数据 - ＆gt; AjoutHeaderDataTablePdf（）：

public PdfPTable AjoutHeaderDataTablePdf(object[] tableObjet, PdfPTable table, iTextSharp.text.Font fntTableFontHdr)
{
    table.HeaderRows = 2;
    table.HorizontalAlignment = 0;
    table.TotalWidth = 500f;
    table.LockedWidth = true;
    float[] widths = new float[] { 60f, 40f, 60f, 40f, 60f, 80f};

    table.SetWidths(widths);

    //Font Color
    BaseColor ForeGroundmyColorHeader = WebColors.GetRGBColor("#FFFFFF");
    BaseColor ForeGroundmyColorOthers = WebColors.GetRGBColor("#232323");
    BaseColor BackGroundmyColor = WebColors.GetRGBColor("#32A3E0");

    BaseColor BackGroundmyColorOther1 = WebColors.GetRGBColor("#D8E4FD");
    BaseColor BackGroundmyColorOther2 = WebColors.GetRGBColor("#FFFFFF");


    var FontHeader = FontFactory.GetFont("Times New Roman", 9, ForeGroundmyColorHeader);

    var FontOthers = FontFactory.GetFont("Times New Roman", 8, ForeGroundmyColorOthers);

    var borderColor = WebColors.GetRGBColor("#E4E4E4");
    var borderWidth =0f;

    /***Begin Header***/


    /******Fin Header******/
    // Ajout Headers columnsName

    foreach (var o in tableObjet)
    {
        Dictionary<string, object> dictionary = (Dictionary<string, object>)o;


        foreach (KeyValuePair<string, object> pair in dictionary)
        {


            PdfPCell CellOneHdr2 = new PdfPCell(new Phrase(pair.Key, FontHeader));

            CellOneHdr2.BackgroundColor = BackGroundmyColor;



            CellOneHdr2.BorderColorLeft = borderColor;
            CellOneHdr2.BorderColorRight = borderColor;
            CellOneHdr2.BorderColorTop = borderColor;
            CellOneHdr2.BorderColorBottom = borderColor;
            CellOneHdr2.BorderWidthLeft = borderWidth;
            CellOneHdr2.BorderWidthRight = borderWidth;
            CellOneHdr2.BorderWidthTop = borderWidth;
            CellOneHdr2.BorderWidthBottom = borderWidth;

            CellOneHdr2.PaddingTop = 6f;
            CellOneHdr2.PaddingLeft = 5f;

            CellOneHdr2.FixedHeight = 26f;
            table.AddCell(CellOneHdr2);

        }
        break;
    }

    //Ajout de contenu de cellules
    int count = 0;
    BaseColor BackGroundmyColorOtherX;
    for (int ii = 0; ii < 5; ii++)

    {

        foreach (var o in tableObjet)
        {
            Dictionary<string, object> dictionary = (Dictionary<string, object>)o;

            if (count % 2 == 0)
                BackGroundmyColorOtherX = BackGroundmyColorOther1;
            else
                BackGroundmyColorOtherX = BackGroundmyColorOther2;

            foreach (KeyValuePair<string, object> pair in dictionary)
            {
                PdfPCell CellOneHdr2 = new PdfPCell(new Phrase(pair.Value.ToString(), FontOthers));

                CellOneHdr2.BackgroundColor = BackGroundmyColorOtherX;
                CellOneHdr2.FixedHeight = 23f;

                CellOneHdr2.BorderColorLeft = borderColor;
                CellOneHdr2.BorderColorRight = borderColor;
                CellOneHdr2.BorderColorTop = borderColor;
                CellOneHdr2.BorderColorBottom = borderColor;
                CellOneHdr2.BorderWidthLeft = borderWidth;
                CellOneHdr2.BorderWidthRight = borderWidth;
                CellOneHdr2.BorderWidthTop = borderWidth;
                CellOneHdr2.BorderWidthBottom = borderWidth;

                CellOneHdr2.PaddingTop = 6f;
                CellOneHdr2.PaddingLeft = 5f;

                table.AddCell(CellOneHdr2);

            }
            count++;

        }
    }
    table.HorizontalAlignment = 1;
    return table;
}

生成表格标题 - ＆gt; TitreTablePdfCentre（）：

public PdfPTable TitreTablePdfCentre(int NbrCol, String Titre)
{
    BaseColor ForeGroundmyColorHeader = WebColors.GetRGBColor("#FFFFFF");
    BaseColor BackGroundmyColorHeader = WebColors.GetRGBColor("#32A3E0");

    var borderColor = WebColors.GetRGBColor("#E4E4E4");
    var borderWidth = 0.1f;

    var FontHeader = FontFactory.GetFont("Times New Roman", 12, ForeGroundmyColorHeader);

    //Creer PdfTable contenant NbrCol colonnes
    PdfPTable table = new PdfPTable(NbrCol);
    table.HeaderRows = 2;
    //Ajouter un Titre en haut du fichier

    PdfPCell cell = new PdfPCell(new Phrase(Titre, FontHeader));
    // fusionner les NbrCol celllules en une seul cellule
    cell.Colspan = NbrCol;

    //Metre au centre :  0=Left, 1=Centre, 2=Right
    cell.HorizontalAlignment = 1;

    // Ajout La cellule à Pdftable 

    /**Style**/

    cell.FixedHeight = 30f;
    cell.PaddingTop = 6f;
    cell.BackgroundColor = BackGroundmyColorHeader;


    cell.BorderColorLeft = borderColor;
    cell.BorderColorRight = borderColor;
    cell.BorderColorTop = borderColor;
    cell.BorderColorBottom = borderColor;
    cell.BorderWidthLeft = borderWidth;
    cell.BorderWidthRight = borderWidth;
    cell.BorderWidthTop = borderWidth;
    cell.BorderWidthBottom = borderWidth;

    table.AddCell(cell);
    table.HorizontalAlignment = 1;
    return table;
}

从Json生成数据 - ＆gt; GenererPdfJSON（）：

public void GenererPdfJSON(String screendata, String Titre, String MapPath, String file)
{
    //Convertir String JSON to Table object[]
    object[] tableObjet = TbaleJSON(screendata);

    //Retourne Nbr Lignes Object
    int nbrlignes = NbrLignesTableJSON(tableObjet);

    //Calcul de nombre de colonnes de tableObjet
    int nbrcol = NbrColonnesTableJSON(tableObjet);

    //Creer PdfTable contenant nbrcol colonnes en heut de la feuille
    PdfPTable table = TitreTablePdfCentre(nbrcol, Titre);
    table.HeaderRows = 2;
    Document document = new Document();

    //Ajout de qlq Style
    iTextSharp.text.Font fntTableFontHdr = FontFactory.GetFont("Arial", 8, iTextSharp.text.Font.BOLD, BaseColor.BLACK);

    //Lien Physique Server.MapPath("~/Content/") + fichierpdf.pdf
    string filepath = MapPath + file;

    //Ecrire les données dans le fichier
    PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(filepath, FileMode.Create));
    //Ouvrir le document
    document.Open();

    /**pagination***/
    Paragraph para = new Paragraph("Hello world. Checking Header Footer", new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 22));

    para.Alignment = Element.ALIGN_CENTER;

    document.Add(para);


    //*****************//
    //Ajouter le noms colonnes et les donnees dans les cellules avec Style fntTableFontHdr
    table = AjoutHeaderDataTablePdf(tableObjet, table, fntTableFontHdr);


    document.Add(table);
    document.Close();
}

我的问题是我想为每个页面创建页眉和页脚以显示页码，标题，......

Answer 1

可以通过覆盖PdfPageEventHelper添加页脚和标题。通过将类的实例添加到PdfWriters页面事件，需要将以下代码与当前文档相关联，例如writer.PageEvent = new PageEventHelper();。作为侧点，必须在文档打开之前放置。

调用document.NewPage()时调用OnEndPage，并在指定位置添加当前页码。还要添加＆＃34; Y＆＃34;我们需要等到文档关闭才能确保获得正确的页数。

 public class PageEventHelper : PdfPageEventHelper
 {
    PdfContentByte cb;
    PdfTemplate template;


    public override void OnOpenDocument(PdfWriter writer, Document document)
    {
        cb = writer.DirectContent;
        template = cb.CreateTemplate(width, height);
    }

    public override void OnEndPage(PdfWriter writer, Document document)
    {
        base.OnEndPage(writer, document);

        int pageN = writer.PageNumber;
        String text = "Page " + pageN.ToString() + " of ";

        Rectangle pageSize = document.PageSize;

        cb.BeginText();
        cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 12F);
        cb.SetTextMatrix(Width, Height);
        cb.ShowText(text);

        cb.EndText();
        //Add the template to each page so we can add the total page number later
        cb.AddTemplate(template, Width, Height);
    }

    public override void OnCloseDocument(PdfWriter writer, Document document)
    {
        base.OnCloseDocument(writer, document);

        template.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 12F);
        template.BeginText();
        template.SetTextMatrix(0, 0);
        //Add the final page number.
        template.ShowText("" + (writer.PageNumber - 1));
        //This will write the number on all templates on all pages
        template.EndText();
    }
}

有关PdfPageEvenHelper类的更多详细信息，请访问http://api.itextpdf.com/itext/com/itextpdf/text/pdf/PdfPageEventHelper.html。这是用Java编写的，但很容易在c＃中使用相同的代码。

此原则可用于通过使用不同的模板添加页脚和标题。

每个PDF页面的页眉和页脚

1 个答案: