邮件的内容其实是就HTML,传统的做法都是通过在程序中拼接字符串来生成邮件的内容,生成困难,维护也困难。Razor是MVC里面使用的视图引擎,用来生成HTML非常方便,ZKEACMS中就是使用了Razor视图引擎,用cshtml作为邮件模板来生成邮件内容。这样很方便维护和修改。
接口中定义了两个方法,第一个是视图中没有使用ViewModel,直接传入视图路径就可以了。第二个是视图中有作用ViewModel,传入视图路径和ViewModel对象就可以。
class="brush:csharp;gutter:true;">namespace Easy.Mvc.RazorPages { public interface IViewRenderService { string Render(string viewPath); string Render<Model>(string viewPath, Model model); } }
实现的方式也比较简单,主要还是直接使用了RazorViewEngine:
namespace Easy.Mvc.RazorPages { public class ViewRenderService : IViewRenderService { private readonly IRazorViewEngine _viewEngine; private readonly ITempDataProvider _tempDataProvider; private readonly IServiceProvider _serviceProvider; public ViewRenderService(IRazorViewEngine viewEngine, ITempDataProvider tempDataProvider, IServiceProvider serviceProvider) { _viewEngine = viewEngine; _tempDataProvider = tempDataProvider; _serviceProvider = serviceProvider; } public string Render(string viewPath) { return Render(viewPath, string.Empty); } public string Render<TModel>(string viewPath, TModel model) { var httpContext = new DefaultHttpContext { RequestServices = _serviceProvider }; var actionContext = new ActionContext(httpContext, new RouteData(), new ActionDescriptor()); var viewResult = _viewEngine.GetView(null, viewPath, false); if (!viewResult.Success) { throw new InvalidOperationException($"找不到视图模板 {viewPath}"); } var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary()) { Model = model }; using (var writer = new StringWriter()) { var viewContext = new ViewContext( actionContext, viewResult.View, viewDictionary, new TempDataDictionary(actionContext.HttpContext, _tempDataProvider), writer, new HtmlHelperOptions() ); var render = viewResult.View.RenderAsync(viewContext); render.Wait(); return writer.ToString(); } } } }
使用的方法也很简单,首先要先建一个邮件模板,例如 ResetPassword.cshtml
代码如下:
@model ZKEACMS.Notification.ViewModels.ResetPasswordViewModel <!DOCTYPE html> <html class="not-ie" lang="zh"> <head> <title>重置密码</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta charset="utf-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> </head> <body> <h3> 您正在重置密码, </h3> <p> 您可以使用以下链接来重置您的密码,为了安全,该链接仅会在一段时间内有效,请尽快重置密码 </p> <p> <a href="@Model.Link"> @Model.Link </a> </p> <h4> ZKEASOFT </h4> <p> <a href="http://www.zkea.net"> http://www.zkea.net </a> </p> <p> <em>@DateTime.Now.ToString("yyyy-MM-dd")</em> </p> </body> </html>
接下来就是调用ViewRenderService
var htmlContent = _viewRenderService.Render("~/EmailTemplates/ResetPassword.cshtml", new ResetPasswordViewModel{Link=...});
有了内容以后,就可以直接调用发送了。
原文链接:http://www.zkea.net/codesnippet/detail/post-62