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刚刚有人留言说需要 iTextSharp 创建PDF水印代码
那就贴一个以前写好的。
public static void SetWatermark(string inputfilepath, string outputfilepath, string waterMarkName)
{
PdfReader pdfReader = null;
PdfStamper pdfStamper = null;
try
{
pdfReader = new PdfReader(inputfilepath);
pdfStamper = new PdfStamper(pdfReader, new FileStream(outputfilepath, FileMode.Create));
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 = 0.6f;
content.SetGState(gs);
//content.SetGrayFill(0.3f);
//开始写入文本
content.BeginText();
content.SetColorFill(BaseColor.GRAY);
content.SetFontAndSize(font, 50);
content.SetTextMatrix(0, 0);
content.ShowTextAligned(Element.ALIGN_CENTER, waterMarkName, width / 2 - 50, height / 2 - 50, 45);
content.EndText();
}
for (int i = 1; i < total; i++)
{
/* 开始增加页码 */
content = pdfStamper.GetOverContent(i);
gs.FillOpacity = 0.8f;
content.SetGState(gs);
content.BeginText();
content.SetColorFill(BaseColor.BLACK);
content.SetFontAndSize(font, 12);
content.ShowTextAligned(Element.ALIGN_CENTER, "第" + i.ToString() + "页 " + "共" + (total - 1).ToString() + "页", width / 2 - 5, 35, 0);
content.EndText();
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pdfStamper != null)
pdfStamper.Close();
if (pdfReader != null)
pdfReader.Close();
}
}