需要通过NuGet添加Html2Pdf引用
#region 通过Html来生成pdf，测试Html样式
/// <summary>
/// 通过Html来生成pdf，测试Html样式
/// </summary>
/// <param name="html">要转换成pdf的html</param>
/// <returns></returns>
[HttpGet]
[Route("TestHtmlToPdf")]
public HttpResponseMessage TestHtmlToPdf(string html)
{
//test html="<!DOCTYPE%20html>%20<html>%20<head>%20<meta%20charset="utf-8"%20/>%20<title></title>%20</head>%20<body>%20<div%20style="opacity:0">opacity</div>%20<div%20style="visibility:hidden">发的fads</div>%20<div%20style="display:none">display</div>%20</body>%20</html>"
// pdfHTML specific code
using (var memberStream = new MemoryStream())
{
ConverterProperties converterProperties = new ConverterProperties();
converterProperties.SetFontProvider(new DefaultFontProvider(true, true, true));
HtmlConverter.ConvertToPdf(html, memberStream, converterProperties);
byte[] pdfArray = memberStream.ToArray();
#region 生成pdf后加公章
var outputStream = new MemoryStream();
var reader = new PdfReader(pdfArray);
PdfStamper stamp = new PdfStamper(reader, outputStream);
Image image = Image.GetInstance("zhang.png");
image.Alignment = Element.ALIGN_LEFT;
image.ScaleToFit(120, 120);
image.SetAbsolutePosition(400, 700);
//页数是从1开始的
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfContentByte under = stamp.GetOverContent(i);
under.AddImage(image);
}
stamp.Close();
outputStream.Close();
pdfArray = outputStream.ToArray();
#endregion
var response = new HttpResponseMessage();
response.StatusCode = System.Net.HttpStatusCode.OK;
response.Content = new ByteArrayContent(pdfArray);
response.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/pdf");
return response;
}
}
#endregion
