.Net iTextSharp 导出pdf, 包含列表和图片

港控/mmm° 2022-05-29 08:28 255阅读 0赞

//引包iTextSharp，下载iTextSharp，项目引入itextsharp.dll
    
    using iTextSharp.text;
    using iTextSharp.text.pdf;
    
    
    public void SimplePdf() //入口
    {
    Document doc = new Document(PageSize.A4); //图纸大小A4纸
    byte[] bytes = null ;
    
    try
    {
        BaseFont baseFont = BaseFont.CreateFont("C:\\WINDOWS\\FONTS\\simhei.ttf", BaseFont.IDENTITY_H,
            BaseFont.NOT_EMBEDDED);  //SIMSUN.TTC：宋体和新宋体
        Font ChFont_black = new Font(baseFont, 12);
    
    
        //PDF内容放入到流中
        MemoryStream m = new MemoryStream();
        PdfWriter.GetInstance(doc, m);
    
    
        doc.Open();
    
    
        //设定每列宽度
        float[] w = { 150, 150, 150 };
        PdfPTable table = new PdfPTable(w.Length); //初始化列数
        table.SetWidthPercentage(w, PageSize.A4);
        table.NormalizeHeadersFooters();
        table.SplitLate = false; 
        PdfPCell cell;
    
        #region  一、数据列表
    
        #region 数据列表标题
    
        cell = new PdfPCell(new Phrase("姓名", ChFont_black));  //new Phrase("姓名"); 多个重载方法，可以添加样式等。
        cell.Colspan = 1;  //默认为1；可以做合并单元格处理，列合并例如：cell.Colspan = 2 合并两列；行合并例如：cell.Rowspan = 2 合并两行
        cell.BorderColor = new BaseColor(0, 0, 0); //单元格边框颜色，默认黑色
        cell.BackgroundColor = new BaseColor(0, 102, 204); //单元格背景颜色
        cell.HorizontalAlignment = Element.ALIGN_CENTER;  //水平居中
        cell.VerticalAlignment = Element.ALIGN_MIDDLE;   //垂直居中
        table.AddCell(cell);
    
        cell = new PdfPCell(new Phrase("性别", ChFont_black));
        cell.BackgroundColor = new BaseColor(0, 102, 204);
        cell.HorizontalAlignment = Element.ALIGN_CENTER;
        cell.VerticalAlignment = Element.ALIGN_MIDDLE;
        table.AddCell(cell);
    
        cell = new PdfPCell(new Phrase("年龄", ChFont_black));
        cell.BackgroundColor = new BaseColor(0, 102, 204);
        cell.HorizontalAlignment = Element.ALIGN_CENTER;
        cell.VerticalAlignment = Element.ALIGN_MIDDLE;
        table.AddCell(cell);
    
        #endregion
    
        #region 列表数据
    
        List<UserTest> userTestList = InitUserTestData(); //得到数据
    
        foreach (UserTest info in userTestList)
        {
            //遍历数据后，第一列
            cell = new PdfPCell(new Phrase(info.Name, ChFont_black));
            cell.HorizontalAlignment = Element.ALIGN_CENTER;
            cell.VerticalAlignment = Element.ALIGN_MIDDLE;
            table.AddCell(cell);
    
            //遍历数据后，第二列
            cell = new PdfPCell(new Phrase(info.Sex, ChFont_black));
            cell.HorizontalAlignment = Element.ALIGN_CENTER;
            cell.VerticalAlignment = Element.ALIGN_MIDDLE;
            table.AddCell(cell);
    
            //遍历数据后，第三列
            cell = new PdfPCell(new Phrase(info.Age, ChFont_black));
            cell.HorizontalAlignment = Element.ALIGN_CENTER;
            cell.VerticalAlignment = Element.ALIGN_MIDDLE;
            table.AddCell(cell);
        }
    
    
        #endregion
    
        //***cell.Table 可以进行table嵌套，适用于多个复杂table, 举例：外层嵌套框架table,  单元格内嵌套table,这样能够有效处理到处内容的结构。
    
        #endregion
    
    
        #region 二、嵌入图片
    
        iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance("E:\\wandapos\\02_Project\\14_Web\\03_WandaPOS\\WandaWebSite\\TempDoc\\209054a4-fa46-4882-8c2a-e9918ded954e.jpg"); //图片存放路径
    
        cell = new PdfPCell();
        cell.Colspan = 3;
        cell.Image = img; //图片
        cell.HorizontalAlignment = Element.ALIGN_LEFT;  
        cell.VerticalAlignment = Element.ALIGN_MIDDLE;  
        table.AddCell(cell);
    
        #endregion
    
        doc.Add(table); //将table元素添加入文档对象
        doc.Close();
        bytes = m.GetBuffer();
    }
    catch
    {
        //异常
    }
    
    
    ExportPDFFile("pdf名称", bytes);
    
    
    }
    
    
    
    public void ExportPDFFile(string fileName, byte[] bytes)  //浏览器下载
    {
        Encoding encoding;
        string outputFileName = null;
    
        //兼容MS/IE,FIREFOX浏览器处理
        string browser = HttpContext.Current.Request.UserAgent.ToUpper();
        if (browser.Contains("MS") == true && browser.Contains("IE") == true)
        {
            outputFileName = HttpUtility.UrlEncode(fileName);
            encoding = System.Text.Encoding.Default;
        }
        else if (browser.Contains("FIREFOX") == true)
        {
            outputFileName = fileName;
            encoding = System.Text.Encoding.GetEncoding("GB2312");
        }
        else
        {
            outputFileName = HttpUtility.UrlEncode(fileName);
            encoding = System.Text.Encoding.Default;
        }
    
        //输出到浏览器端。
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Buffer = true;
        HttpContext.Current.Response.ContentEncoding = encoding;
        HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment; filename={0}.pdf", string.IsNullOrEmpty(outputFileName) ? DateTime.Now.ToString("yyyyMMdd") : outputFileName));
        HttpContext.Current.Response.BinaryWrite(bytes);
        HttpContext.Current.Response.End();
    
    }
    
    
    
    public List<UserTest> InitUserTestData() //构造数据
    {
    List<UserTest> userTestList = new List<UserTest>();
    UserTest userTestInfo = null;
    
    userTestInfo = new UserTest();
    userTestInfo.Name = "张三";
    userTestInfo.Sex = "女";
    userTestInfo.Age = "18";
    userTestList.Add(userTestInfo);
    
    userTestInfo = new UserTest();
    userTestInfo.Name = "李四";
    userTestInfo.Sex = "男";
    userTestInfo.Age = "19";
    userTestList.Add(userTestInfo);
    
    userTestInfo = new UserTest();
    userTestInfo.Name = "王麻";
    userTestInfo.Sex = "男";
    userTestInfo.Age = "30";
    userTestList.Add(userTestInfo);
    
    return userTestList;
    }
    
    public class UserTest {
        public string Name { get; set; }
        public string Sex { get; set; }
        public string Age { get; set; }
    }

![Image 1][]

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[Image 1]: 
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpbmF0XzE2OTk4OTQ1_size_16_color_FFFFFF_t_70]: /images/20220529/e8d3e8b5aebc47d18dd39cc117a8f664.png