前言
在本文中,我们将学习如何使用Rotativa.AspNetCore工具从ASP.NET Core中的视图创建PDF。如果您使用ASP.NET MVC,那么Rotativa工具已经可用,我们可以使用它来生成pdf。
创建一个MVC项目,无论您是core或不core,都可以nuget下包.命令如下:
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Install-Package Rotativa
#或者
Install-Package Rotativa.AspNetCore
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这个工具由意大利人Giorgio Bozio创建。他需要在ASP.NET MVC中生成pdf,并且重复的任务是设置一种方法来创建PDF文档,用于业务流程或报告,下面废话不多说,我们开始吧。
在startup.cs类中配置Rotativa.AspNetCore设置
我们在Configure方法内的startup.cs类中添加此设置,以设置要访问的wkhtmltopdf.exe文件的相对路径。
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public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
RotativaConfiguration.Setup(env);
}
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我们需要在wwwroot中添加Rotativa文件夹,然后放入这两个exe,我把这两个文件已经放到了百度云盘。
然后我们添加一个Demo控制器,定义一个Get方法,其定义如下,通过ViewAsPdf方法,就可以通过pdf的形式去套住cshtml,也就达到了pdf的效果。
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public class DemoController : Controller
{
[HttpGet]
public IActionResult DemoViewAsPdf()
{
return new ViewAsPdf( "DemoViewAsPdf" );
}
}
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就现在,我们需要通过控制器去创建一个视图,然后在视图中有如下定义:
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@{
ViewData["Title"] = "DemoViewAsPdf";
}
< html >
< head >
< meta charset = "utf-8" >
< title >Demo</ title >
</ head >
< body >
< p >Hello AspNetCore!!</ p >
</ body >
</ html >
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现在,我们把页面重定与
http://localhost:55999/Demo/DemoViewAsPdf
边距
除了普通的展示pdf,我们还可以进行操作,例如下载,打印。当然如果宽和高不太满意,你可以对视图进行设置,其中有一个类是对视图进行配置的,其定义如下,有四大配置值。
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public class Margins
{
[OptionFlag( "-B" )]
public int ? Bottom;
[OptionFlag( "-L" )]
public int ? Left;
[OptionFlag( "-R" )]
public int ? Right;
[OptionFlag( "-T" )]
public int ? Top;
public Margins();
public Margins( int top, int right, int bottom, int left);
public override string ToString();
}
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在控制器中直接new出它,然后直接return,和上面类似,现在你可以将html中的p标签添加一些内容,然后看一下效果。
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[HttpGet]
public IActionResult DemoViewAsPdf()
{
return new ViewAsPdf( "DemoPageMarginsPDF" )
{
PageMargins = { Left = 20, Bottom = 20, Right = 20, Top = 20 },
};
}
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就这样,我们再次启动,可见已经有了外边距!
横向与纵向
它还给我们提供了横向还是竖向的pdf效果,如以下定义:
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[HttpGet]
public IActionResult DemoViewAsPdf( string Orientation)
{
if (Orientation == "Portrait" )
{
var demoViewPortrait = new ViewAsPdf( "DemoViewAsPDF" )
{
FileName = "Invoice.pdf" ,
PageOrientation = Rotativa.AspNetCore.Options.Orientation.Portrait,
};
return demoViewPortrait;
}
else
{
var demoViewLandscape = new ViewAsPdf( "DemoViewAsPDF" )
{
FileName = "Invoice.pdf" ,
PageOrientation = Rotativa.AspNetCore.Options.Orientation.Landscape,
};
return demoViewLandscape;
}
}
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通过 http//localhost:60042/demo/DemoOrientationPDF?Orientation=Portrait 或者其它路由进行访问,你对比以下就可以看到效果。
设置PDF大小
基本上都是A4,枚举里很多值,自己看~
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[HttpGet]
public IActionResult DemoViewAsPdf( string Orientation)
{
return new ViewAsPdf( "DemoPageSizePDF" )
{
PageSize = Rotativa.AspNetCore.Options.Size.A4
};
}
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小案例
创建一个模型,这是一个非常简单的模型,定义如下:
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public class Customer
{
public int CustomerID { get ; set ; }
public string Name { get ; set ; }
public string Address { get ; set ; }
public string Country { get ; set ; }
public string City { get ; set ; }
public string Phoneno { get ; set ; }
}
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在控制器中new几个对象,然后返回pdf。
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[HttpGet]
public IActionResult DemoViewAsPdf()
{
List<Customer> customerList = new List<Customer>() {
new Customer { CustomerID = 1, Address = "Taj Lands Ends 1" , City = "Mumbai" , Country = "India" , Name = "Sai" , Phoneno = "9000000000" },
new Customer { CustomerID = 2, Address = "Taj Lands Ends 2" , City = "Mumbai" , Country = "India" , Name = "Ram" , Phoneno = "9000000000" },
new Customer { CustomerID = 3, Address = "Taj Lands Ends 3" , City = "Mumbai" , Country = "India" , Name = "Sainesh" , Phoneno = "9000000000" },
new Customer { CustomerID = 4, Address = "Taj Lands Ends 4" , City = "Mumbai" , Country = "India" , Name = "Saineshwar" , Phoneno = "9000000000" },
new Customer { CustomerID = 5, Address = "Taj Lands Ends 5" , City = "Mumbai" , Country = "India" , Name = "Saibags" , Phoneno = "9000000000" }
};
return new ViewAsPdf( "DemoModelPDF" , customerList);
}
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在视图中,我们只是迭代集合,渲染页面。
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@model List<MvcHtmlToPdf.Models.Customer>
@{
Layout = null ;
}
<!DOCTYPE html>
<html lang= "en" >
<head>
<title>Bootstrap Example</title>
<meta charset= "utf-8" >
<meta name= "viewport" content= "width=device-width, initial-scale=1" >
</head>
<body>
<div class = "container" >
<h2>Customer</h2>
<p>Customer Details</p>
<table class = "table table-bordered" >
<thead>
<tr>
<th>CustomerID</th>
<th>Name</th>
<th>Address</th>
<th>Country</th>
<th>City</th>
<th>Phoneno</th>
</tr>
</thead>
<tbody>
@ foreach (var item in Model)
{
<tr>
<td>@item.CustomerID</td>
<td>@item.Name</td>
<td>@item.Address</td>
<td>@item.Country</td>
<td>@item.City</td>
<td>@item.Phoneno</td>
</tr>
}
</tbody>
</table>
</div>
</body>
</html>
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总结
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作具有一定的参考学习价值,如果有疑问大家可以留言交流,谢谢大家对服务器之家的支持。
原文链接:https://www.cnblogs.com/ZaraNet/p/10417056.html