Hello World
public byte[] GetHelloWorldPdf()
{
using (MemoryStream stream = new MemoryStream())
{
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, stream);
pdfDoc.Open();
pdfDoc.Add(new Paragraph(14f, "HelloWorld"));
pdfDoc.Close();
return stream.ToArray();
}
}
在 Asp.Net Mvc 回傳檔案 :
[HttpPost]
public FileResult HelloWorldPdf()
{
IiTextSharpService service = new ITextSharpService();
byte[] content = service.GetHelloWorldPdf();
return File(content, "application/pdf", $"HelloWorld.pdf");
}
設定字型與中文問題
iTextSharp 預設字型無法處理中文，所以輸入 Hello ! 你好 ! 會變成 Hello ! !
使用 BaseFont 跟 Font 設定字體
string chFontPath = "c:\\windows\\fonts\\kaiu.ttf"; //標楷體
BaseFont baseFont = BaseFont.CreateFont(chFontPath, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
Font chtFont = new Font(baseFont,12);
using (MemoryStream stream = new MemoryStream())
{
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, stream);
pdfDoc.Open();
pdfDoc.Add(new Paragraph(14f, "HelloWorld ! 你好!", chtFont));
pdfDoc.Close();
return stream.ToArray();
}
執行結果 :
換頁
pdfDoc.NewPage();
句子片段
chunk、phrase、paragraph
- paragraph 文章段落
- phrase 句子
- chunk 片段
pdfDoc.Add(new Paragraph(14f, "HelloWorld"));
將 Html 轉成 PDF
使用 XMLWorkerHelper
public byte[] GetHelloWorldPdf()
{
using (MemoryStream stream = new MemoryStream())
{
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, stream);
pdfDoc.Open();
XMLWorkerHelper.GetInstance().ParseXHtml(writer, pdfDoc, GetHtmlContent(), GetStyleCss(), Encoding.UTF8,
new UnicodeFontFactory());
pdfDoc.Close();
return stream.ToArray();
}
}
GetHtmlContent
public MemoryStream GetHtmlContent()
{
string content = @"
<html>
<head></head>
<body>
<p>Hello World ! 你好!</p>
</body>
</html>
";
byte[] byteArray = Encoding.UTF8.GetBytes(content);
MemoryStream sr = new MemoryStream(byteArray);
return sr;
GetStyleCss
private MemoryStream GetStyleCss()
{
string content = @"
p{
color : red;
}
";
byte[] byteArray = Encoding.UTF8.GetBytes(content);
MemoryStream sr = new MemoryStream(byteArray);
return sr;
}
UnicodeFontFactory 部分(從網路上直接拷貝來用的)
public class UnicodeFontFactory : FontFactoryImp
{
private static readonly string KaiuPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts),
"KAIU.TTF");//標楷體
public override Font GetFont(string fontname, string encoding, bool embedded, float size, int style, BaseColor color,
bool cached)
{
BaseFont baseFont = BaseFont.CreateFont(KaiuPath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
return new Font(baseFont, size, style, color);
}
}
執行結果 :
參考 :
http://www.cc.ntu.edu.tw/chinese/epaper/0015/20101220_1509.htm
https://ithelp.ithome.com.tw/articles/10190232