public static Stream Html2Pdf(PrinterData printerData)
{
string htmlText = printerData.data.Trim();
if (string.IsNullOrEmpty(htmlText))
{
throw new Exception("传入的html无内容：" + htmlText);
}
MemoryStream outputStream = new MemoryStream(); //实例化MemoryStream，用于存PDF
byte[] data = Encoding.UTF8.GetBytes(htmlText); //字串转成byte[]
MemoryStream msInput = new MemoryStream(data);
int width = 0, height = 0;
width = (int)Millimeters2PixelsUtils.Millimeters2Pixels(printerData.width);
height = (int)Millimeters2PixelsUtils.Millimeters2Pixels(printerData.height);
if (!printerData.customSizeFlag)
{
PrintUtils.getPaperSize(printerData.paperName ?? "A4", ref width, ref height);
}
Rectangle pageSize = new Rectangle(width, height); //设置pdf模板大小
if (printerData.direction == "2") //2：横向打印
{
pageSize = new Rectangle(height, width);
}
Document doc = new Document(pageSize); //要写PDF的文件 document = new Document(PageSize.A4, 25, 25, 30, 30);
PdfWriter writer = PdfWriter.GetInstance(doc, outputStream);
//指定文件预设开档时的缩放为100%
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 1f);
//开启Document文件
doc.Open();
//使用XMLWorkerHelper把Html parse到PDF档里
XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8, new UnicodeFontFactory());
//XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8);
//将pdfDest设定的资料写到PDF档
PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer);
writer.SetOpenAction(action);
doc.Close();
msInput.Close();
outputStream.Close();
//回传PDF档案
var bytes = outputStream.ToArray();
var ret = Convert.ToBase64String(bytes);
try
{
string strbase64 = ret;
strbase64 = strbase64.Replace(' ', '+');
return(new MemoryStream(Convert.FromBase64String(strbase64)));
}
catch (Exception ex)
{
throw new Exception("html转pdf文件失败：" + ex.Message);
}
}
public static void Html2Pdf(string htmlText, string tempPdfPath, string paperName, string direction, Boolean customSizeFlag, int customWidth, int customHeight)
{
if (string.IsNullOrEmpty(htmlText))
{
throw new Exception("传入的html无内容：" + htmlText);
}
MemoryStream outputStream = new MemoryStream(); //实例化MemoryStream，用于存PDF
byte[] data = Encoding.UTF8.GetBytes(htmlText); //字串转成byte[]
MemoryStream msInput = new MemoryStream(data);
int width = 0, height = 0;
width = (int)Millimeters2PixelsUtils.Millimeters2Pixels(customWidth);
height = (int)Millimeters2PixelsUtils.Millimeters2Pixels(customHeight);
if (!customSizeFlag)
{
paperName = paperName ?? "A4";
PrintUtils.getPaperSize(paperName, ref width, ref height);
}
Rectangle pageSize = new Rectangle(width, height); //设置pdf模板大小
if (direction == "2") //2：横向打印
{
pageSize = new Rectangle(height, width);
}
Document doc = new Document(pageSize); //要写PDF的文件 document = new Document(PageSize.A4, 25, 25, 30, 30);
PdfWriter writer = PdfWriter.GetInstance(doc, outputStream);
//指定文件预设开档时的缩放为100%
PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 1f);
//开启Document文件
doc.Open();
//使用XMLWorkerHelper把Html parse到PDF档里
XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8, new UnicodeFontFactory());
//XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8);
//将pdfDest设定的资料写到PDF档
PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer);
writer.SetOpenAction(action);
doc.Close();
msInput.Close();
outputStream.Close();
//回传PDF档案
var bytes = outputStream.ToArray();
var ret = Convert.ToBase64String(bytes);
try
{
string strbase64 = ret;
strbase64 = strbase64.Replace(' ', '+');
System.IO.MemoryStream stream = new System.IO.MemoryStream(Convert.FromBase64String(strbase64));
System.IO.FileStream fs = new System.IO.FileStream(tempPdfPath, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write);
byte[] b = stream.ToArray();
//byte[] b = stream.GetBuffer();
fs.Write(b, 0, b.Length);
fs.Close();
}
catch (Exception ex)
{
throw new Exception("html转pdf文件失败：" + ex.Message);
}
}
