ASP.NET MVC中Bundle是用于打包捆绑资源的(一般是css和js),它是在全局文件Global.asax.cs中注册Bundle,而注册的具体实现默认是在App_Start文件夹的BundleConfig.cs中
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public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
}
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BundleConfig.RegisterBundles(BundleTable.Bundles); 在应用程序启用时注册Bundle
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public class BundleConfig
{
// 有关绑定的详细信息,请访问 http://go.microsoft.com/fwlink/?LinkId=301862
public static void RegisterBundles(BundleCollection bundles)
{
bundles.Add( new ScriptBundle( "~/bundles/jquery" ).Include(
"~/Scripts/jquery-{version}.js" ));
bundles.Add( new ScriptBundle( "~/bundles/jqueryval" ).Include(
"~/Scripts/jquery.validate*" ));
// 使用要用于开发和学习的 Modernizr 的开发版本。然后,当你做好
// 生产准备时,请使用 http://modernizr.com 上的生成工具来仅选择所需的测试。
bundles.Add( new ScriptBundle( "~/bundles/modernizr" ).Include(
"~/Scripts/modernizr-*" ));
bundles.Add( new ScriptBundle( "~/bundles/bootstrap" ).Include(
"~/Scripts/bootstrap.js" ,
"~/Scripts/respond.js" ));
bundles.Add( new StyleBundle( "~/Content/css" ).Include(
"~/Content/bootstrap.css" ,
"~/Content/site.css" ));
}
}
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为了便于说明,这里在HomeController下新建一个Action,如下:
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public ActionResult BundleTest()
{
return View();
}
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这里以使用Bootstrap为例,在视图中使用@Styles.Render() 和@Scripts.Render() 引入css和js,参数是在BundleConfig注册的名称
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@{
Layout = null;
}
<!DOCTYPE html>
< html >
< head >
< meta name = "viewport" content = "width=device-width" />
< title >BundleTest</ title >
@Styles.Render("~/Content/css")
</ head >
< body >
@Scripts.Render("~/bundles/jquery", "~/bundles/bootstrap")
</ body >
</ html >
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浏览页面,查看源代码,可以看到:
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bundles.Add( new StyleBundle( "~/Content/css" ).Include(
"~/Content/bootstrap.css" ,
"~/Content/site.css" ));
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由于在BundleConfig.cs中注册上面的Bundle,@Styles.Render("~/Content/css")渲染时是引入~/Content/bootstrap.css和~/Content/site.css,js的渲染同理
为了验证是否真正引入了BootStrap的css与js资源,这里添加了一些简单的BootStrap示例代码,如下:
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@{
Layout = null;
}
<!DOCTYPE html>
< html >
< head >
< meta name = "viewport" content = "width=device-width" />
< title >BundleTest</ title >
@Styles.Render("~/Content/css")
</ head >
< body >
< div class = "container" >
< div class = "header clearfix" >
< nav >
< ul class = "nav nav-pills pull-right" >
< li role = "presentation" class = "active" >< a href = "#" >首页</ a ></ li >
< li role = "presentation" >< a href = "#" >关于我们</ a ></ li >
< li role = "presentation" >< a href = "#" >联系我们</ a ></ li >
</ ul >
</ nav >
</ div >
< form class = "form-horizontal" >
< div class = "form-group" >
< label for = "username" class = "col-sm-2 control-label" >用户名</ label >
< div class = "col-sm-10" >
< input type = "text" class = "form-control" id = "username" placeholder = "用户名" >
</ div >
</ div >
< div class = "form-group" >
< label for = "password" class = "col-sm-2 control-label" >密码</ label >
< div class = "col-sm-10" >
< input type = "password" class = "form-control" id = "password" placeholder = "密码" >
</ div >
</ div >
< div class = "form-group" >
< label for = "code" class = "col-sm-2 control-label" >验证码</ label >
< div class = "col-sm-10" >
< input type = "text" class = "form-control" id = "code" placeholder = "验证码" >
</ div >
</ div >
< div class = "form-group" >
< div class = "col-sm-offset-2 col-sm-10" >
< div class = "checkbox" >
< label >
< input type = "checkbox" > 记住我
</ label >
</ div >
</ div >
</ div >
< div class = "form-group" >
< div class = "col-sm-offset-2 col-sm-10" >
< button type = "submit" class = "btn btn-default" >登录</ button >
</ div >
</ div >
</ form >
< footer class = "footer" >
< p >© 2017 Zhong.</ p >
</ footer >
</ div > <!-- /container -->
@Scripts.Render("~/bundles/jquery", "~/bundles/bootstrap")
</ body >
</ html >
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前台浏览看效果(当浏览器足够大时是横向平铺的,如果将浏览器缩小,则是垂直平铺,示例中的表单部分最能体现出来):
改进
上面的Bundle是引入了未压缩的css和js资源,但在实际应用中,出于为了减轻服务器负载等原因,需要引入压缩版的资源(一般是在未压缩的命名后面加上min来命名,如jquery.js的压缩版【有些叫法是精简版】是jquery.min.js)
于是修改BundleConfig.cs
重新编译,再次浏览刚才的页面,这时发现引入了压缩版的资源(css/js)
注:由于示例时使用了ASP.NET MVC 5( .Net Framework 4.5),而在.net framework 4中的asp.net mvc 4可能会有下面的情况:
在页面查看源代码时发现脚本缺少引入~/Scripts/bootstrap.min.js,这是asp.net mvc 4使用的System.Web.Optimization.dll默认使用了忽略规则*.min.js,这时可以在BundleConfig.cs的RegisterBundles中清除忽略规则
该解决方法一是通过反编译System.Web.Optimization.dll并结合反编译的代码得出来的,另外也可以参考这个链接
另外就是在部署生产环境时发现无效,因为生产环境不再是debug模式,此时需要设置:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/godbell/archive/2017/08/21/7407129.html