Pechkin:html -> pdf 利器

时间:2023-03-09 16:04:15
Pechkin:html -> pdf 利器

Pechkin 是GitHub上的一个开源项目,可方便将html转化成pdf文档,使用也很方便,下面是winform项目中的示例代码:

using System;
using System.Diagnostics;
using System.Drawing.Printing;
using System.IO;
using System.Windows.Forms;
using Pechkin;
using Pechkin.Synchronized; namespace PdfTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
} private void btnCreatePDF_Click(object sender, EventArgs e)
{ SynchronizedPechkin sc = new SynchronizedPechkin(new GlobalConfig()
.SetMargins(new Margins() { Left = 0, Right = 0, Top = 0, Bottom = 0 }) //设置边距
.SetPaperOrientation(true) //设置纸张方向为横向
.SetPaperSize(ConvertToHundredthsInch(50), ConvertToHundredthsInch(100))); //设置纸张大小50mm * 100mm byte[] buf = sc.Convert(new ObjectConfig(), this.txtHtml.Text); if (buf == null)
{
MessageBox.Show("Error converting!");
return;
} try
{
string fn = Path.GetTempFileName() + ".pdf";
FileStream fs = new FileStream(fn, FileMode.Create);
fs.Write(buf, 0, buf.Length);
fs.Close(); Process myProcess = new Process();
myProcess.StartInfo.FileName = fn;
myProcess.Start();
}
catch { }
} private int ConvertToHundredthsInch(int millimeter)
{
return (int)((millimeter * 10.0) / 2.54);
}
}
}

web项目中也可以使用:

1.  新建一个待打印的页面,比如index.htm,示例内容如下:

<!doctype html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>html打印测试</title>
<style type="text/css" media="all">
* { margin:0; padding:0; font-size:12px }
table { margin:10px; border:2px solid #000; border-collapse:collapse; margin:5px auto }
th, td { border:1px solid #000; border-collapse:collapse; padding:3px 5px }
h1 { font-size:24px }
@media print {
.no-print { display: none; }
.page-break { page-break-after: always; }
}
</style>
<script type="text/javascript"> function createPdf() {
window.open("CreatePdf.ashx?html=index.htm");
}
</script>
</head>
<body>
<div class="no-print" style="text-align:center;margin:5px">
<button onClick="createPdf()">导出pdf</button>
</div>
<table >
<thead>
<tr>
<th colspan="5">
<h1>XXXX报表</h1>
</th>
</tr>
<tr>
<th> 序号 </th>
<th> 栏目1 </th>
<th> 栏目2 </th>
<th> 栏目3 </th>
<th> 栏目4 </th>
</tr>
</thead>
<tbody>
<tr>
<td> 1 </td>
<td> 数据1 </td>
<td> 数据2 </td>
<td> 数据3 </td>
<td> 数据4 </td>
</tr>
<tr class="page-break">
<td> 2 </td>
<td> 数据1 </td>
<td> 数据2 </td>
<td> 数据3 </td>
<td> 数据4 </td>
</tr>
<tr>
<td> 3 </td>
<td> 数据1 </td>
<td> 数据2 </td>
<td> 数据3 </td>
<td> 数据4 </td>
</tr>
<tr>
<td> 4 </td>
<td> 数据1 </td>
<td> 数据2 </td>
<td> 数据3 </td>
<td> 数据4 </td>
</tr>
<tr>
<td> 5 </td>
<td> 数据1 </td>
<td> 数据2 </td>
<td> 数据3 </td>
<td> 数据4 </td>
</tr>
</tbody>
<tfoot>
<tr>
<th> 合计: </th>
<th> </th>
<th> </th>
<th> 300.00 </th>
<th> 300.00 </th>
</tr>
</tfoot>
</table>
</body>
</html>

2、创建一个ashx来生成并输出pdf

using System;
using System.Drawing.Printing;
using System.IO;
using System.Web;
using Pechkin;
using Pechkin.Synchronized; namespace PdfWebTest
{
/// <summary>
/// Summary description for CreatePdf
/// </summary>
public class CreatePdf : IHttpHandler
{ public void ProcessRequest(HttpContext context)
{ string htmlFile = context.Request["html"]; if (!string.IsNullOrWhiteSpace(htmlFile))
{
string filePath = context.Server.MapPath(htmlFile);
if (File.Exists(filePath))
{
string html = File.ReadAllText(filePath);
SynchronizedPechkin sc = new SynchronizedPechkin(new GlobalConfig()
.SetMargins(new Margins() { Left = 0, Right = 0, Top = 0, Bottom = 0 }) //设置边距
.SetPaperOrientation(true) //设置纸张方向为横向
.SetPaperSize(ConvertToHundredthsInch(50), ConvertToHundredthsInch(100))); //设置纸张大小50mm * 100mm byte[] buf = sc.Convert(new ObjectConfig(), html); if (buf == null)
{
context.Response.ContentType = "text/plain";
context.Response.Write("Error converting!");
} try
{
context.Response.Clear(); //方式1:提示浏览器下载pdf
//context.Response.AddHeader("content-disposition", "attachment;filename=" + htmlFile + ".pdf");
//context.Response.ContentType = "application/octet-stream";
//context.Response.BinaryWrite(buf); //方式2:直接在浏览器打开pdf
context.Response.ContentType = "application/pdf";
context.Response.OutputStream.Write(buf, 0, buf.Length); context.Response.End(); }
catch(Exception e) {
context.Response.ContentType = "text/plain";
context.Response.Write(e.Message);
}
} } } public bool IsReusable
{
get
{
return false;
}
} private int ConvertToHundredthsInch(int millimeter)
{
return (int)((millimeter * 10.0) / 2.54);
}
}
}

注意事项:部署web项目时,要保证bin目录下有以下相关dll文件

Common.Logging.dll
libeay32.dll
libgcc_s_dw2-1.dll
mingwm10.dll
Pechkin.dll
Pechkin.Synchronized.dll
ssleay32.dll
wkhtmltox0.dll