一、自定义网页模板
这是一个cshtml后缀的文件，通过该文件定义要导出到pdf或者word的内容模板。
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title>订单页面模板</title>
<style>
.byTable {
width: 100%;
border-collapse: collapse;
padding: 2px;
}
.byTable, .byTable tr th, .byTable tr td {
border: 1px solid black;
padding: 5px 15px;
font-size: 16px;
}
</style>
</head>
<body>
<p>RazorEngine!</p>
<h3>Order Name: @Model.OrderName</h3>
<h3>Order #: @Model.OrderNo</h3>
@if (Model.OrderName == "order name")
{
<span>PM: @Model.OrderName</span>
}
else
{
<p>PM: @Model.OrderName</p>
}
<h3>订单详情</h3>
<table class="byTable">
<tr>
<td>Item name</td>
<td>Item #</td>
<td>Quantity</td>
<td>Price</td>
<td>Total</td>
</tr>
@foreach (var item in Model.Items)
{
<tr>
<td>@item.ItemName</td>
<td>@item.ItemNo</td>
<td>@item.Quantity</td>
<td>@item.Price</td>
<td>@item.Total</td>
</tr>
}
</table>
</body>
</html>
二、通过模板解析器解析自定义的网页模板，动态填充数据
网页模板解析器使用RazorEngine进行解析，通过NuGet添加RazorEngine和itext7.pdfhtml，然后运行RunCompile结合Model填充网页模板。代码如下
using RazorEngine;
using RazorEngine.Templating;
using System;
using System.IO;
using System.Text;
using System.Web;
namespace HY.MvcWeb.Models
{
public class RazorTemplateParser
{
public string Parse<T>(string templateContents, T data)
{
return HttpUtility.HtmlDecode(ParseTemplate(templateContents, data));
}
private string ParseTemplate<T>(string templateContents, T data)
{
try
{
var templateKey = new NameOnlyTemplateKey(templateContents.GetHashCode().ToString(), ResolveType.Global, null);
if (!Engine.Razor.IsTemplateCached(templateKey, data.GetType()))
{
Engine.Razor.AddTemplate(templateKey, new LoadedTemplateSource(templateContents));
}
var templateOutput = new StringBuilder();
using (var sw = new StringWriter(templateOutput))
{
Engine.Razor.RunCompile(templateKey, sw, data.GetType(), data);
}
return templateOutput.ToString();
}
catch (Exception ex)
{
throw new Exception("There was an error parsing this page.", ex);
}
}
}
}
通过如下代码，提取网页模板内容，填充数据，并调用导出pdf的代码在目标文件夹生成pdf文件：
public void ExportPdf()
{
var path = AppDomain.CurrentDomain.BaseDirectory + "Templates\\WebPage1.cshtml";
var template = System.IO.File.ReadAllText(path);
var model = new Order
{
OrderName = "order name",
OrderNo = "order no",
OrderDate = DateTime.Now,
OrderStatus = "in progress",
Items = new List<OrderItem> {
new OrderItem
{
ItemName = "item name 1",
ItemNo="item no 1",
Price = 10,
Quantity =20
},
new OrderItem
{
ItemName = "item name 2",
ItemNo="item no 2",
Price = 15,
Quantity =10
}
}
};
var razorParsed = new RazorTemplateParser().Parse(template, model);
var pdfFilePath = AppDomain.CurrentDomain.BaseDirectory + "Output\\Exported.pdf";
ConvertHtmlStringToPdf(razorParsed, pdfFilePath);
}
private void ConvertHtmlStringToPdf(string htmlString, string pdfFilePath)
{
using (FileStream pdfDest = System.IO.File.Open(pdfFilePath, FileMode.OpenOrCreate))
{
ConverterProperties converterProperties = new ConverterProperties();
HtmlConverter.ConvertToPdf(htmlString, pdfDest, converterProperties);
}
}
Order 类的定义如下：
namespace HY.MvcWeb.Models
{
public class Order
{
public string OrderName { get; set; }
public string OrderNo { get; set; }
public DateTime OrderDate { get; set; }
public string OrderStatus { get; set; }
public List<OrderItem> Items { get; set; }
}
public class OrderItem
{
public string ItemName { get; set; }
public string ItemNo { get; set; }
public double Price { get; set; }
public int Quantity { get; set; }
public double Total { get { return Quantity * Price; } }
}
}
如下是生成的pdf内容截图：