[英]ASP.NET MVC Email
他們的解決方案是使用ASP.NET MVC視圖生成電子郵件模板,而不必跳過去。
讓我詳細說明一下。
var fakeContext = new HttpContext(HttpContext.Current.Request, fakeResponse);
var oldContext = HttpContext.Current;
HttpContext.Current = fakeContext;
var html = new HtmlHelper(new ViewContext(fakeControllerContext,
new FakeView(), viewDataDictionary, new TempDataDictionary()),
new ViewPage());
html.RenderPartial(viewName, viewData, viewDataDictionary);
HttpContext.Current = oldContext;
上面的代碼使用當前的HttpContext來偽造一個新的Context並使用RenderPartial呈現頁面,我們不必這樣做。
另一個使用ControllerContext和.Render的非常詳細的解決方案:( IEmailTemplateService,Headers / Postback WorkAround ),但是用更多的代碼來做同樣的事情。
另一方面,我正在尋找一種可以渲染View而無需POST / GET並為我生成一個可以通過我的Email代碼發送的簡單字符串的東西。 不會出錯的東西,例如兩次發布標題或偽造某些數據。
例如:
//code which does not fire Render, RenderPartial... etc
var email = emailFramework.Create(viewData, view);
請在下面查看我的解決方案或點擊以下鏈接:
我的使用Spark的解決方案:(12/30/2009) ASP.NET MVC電子郵件模板解決方案
這就是我想要ASP.NET MVC ViewEngine要做的,但是它在Spark中,只需點擊下面的最新鏈接,
更新(2009/12/30)清潔版本: ASP.NET MVC電子郵件模板解決方案
(11/16/2009)或Louis DeJardin控制台應用程序版本:
using System;
using Spark;
using Spark.FileSystem;
public class User
{
public int Id { get; set; }
public string Name { get; set; }
}
public abstract class EmailView : AbstractSparkView
{
public User user { get; set; }
}
class Program
{
static void Main(string[] args)
{
// following are one-time steps
// create engine
var settings = new SparkSettings()
.SetPageBaseType(typeof(EmailView));
var templates = new InMemoryViewFolder();
var engine = new SparkViewEngine(settings)
{
ViewFolder = templates
};
// add templates
templates.Add("sample.spark", @"Dear ${user.Name}, This is an email.Sincerely, Spark View Engine http://constanto.org/unsubscribe/${user.Id}");
// following are per-render steps
// render template
var descriptor = new SparkViewDescriptor()
.AddTemplate("sample.spark");
var view = (EmailView)engine.CreateInstance(descriptor);
view.user = new User { Id = 655321, Name = "Alex" };
view.RenderView(Console.Out);
Console.ReadLine();
}
}
我決定使用此方法,因為它似乎可以正確執行所有操作,它是:
請確保閱讀這些帖子。 值得一提的是Louis DeJardin,請參閱他的教程:): 將Spark用作通用模板引擎! ,重新訪問電子郵件模板
為什么需要從視圖創建電子郵件? 為什么不使用普通的舊模板文件? 我一直這樣做-我制作了一個模板,並使用了Castle項目中的NVelocity引擎(不要與nvelocity VIEW引擎混淆)來渲染模板。
例:
var nvEngine = new NVelocityEngine();
nvEngine.Context.Add("FullName", fullName);
nvEngine.Context.Add("MallName", voucher.Mall.Name);
nvEngine.Context.Add("ConfirmationCode", voucher.ConfirmationCode);
nvEngine.Context.Add("BasePath", basePath);
nvEngine.Context.Add("TermsLink", termsLink);
nvEngine.Context.Add("LogoFilename", voucher.Mall.LogoFilename);
var htmlTemplate = System.IO.File.ReadAllText(
Request.MapPath("~/App_Data/Templates/Voucher.html"));
var email = nvEngine.Render(htmlTemplate);
NVelocityEngine類是我圍繞Castle項目提供的NVelocity端口編寫的包裝器,如下所示:
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using NVelocity;
using NVelocity.App;
namespace MyProgram
{
/// <summary>
/// A wrapper for the NVelocity template processor
/// </summary>
public class NVelocityEngine : VelocityEngine
{
Hashtable context = new Hashtable();
/// <summary>
/// A list of values to be merged with the template
/// </summary>
public Hashtable Context
{
get { return context; }
}
/// <summary>
/// Default constructor
/// </summary>
public NVelocityEngine()
{
base.Init();
}
/// <summary>
/// Renders a template by merging it with the context items
/// </summary>
public string Render(string template)
{
VelocityContext nvContext;
nvContext = new VelocityContext(context);
using (StringWriter writer = new StringWriter())
{
this.Evaluate(nvContext, writer, "template", template);
return writer.ToString();
}
}
}
}
這樣,您根本就不需要干預視圖引擎,並且理論上可以根據需要將其與ASP.NET視圖引擎鏈接起來,就像我在以下控制器方法中所做的那樣:
public ActionResult ViewVoucher(string e)
{
e = e.Replace(' ', '+');
var decryptedEmail = CryptoHelper.Decrypt(e);
var voucher = Voucher.FindByEmail(decryptedEmail);
if (voucher == null) return View("Error", new Exception("Voucher not found."));
var basePath = new Uri(Request.Url, Url.Content("~/")).ToString();
var termsLink = new Uri(Request.Url, Url.Action("TermsGC", "Legal")).ToString();
basePath = basePath.Substring(0, basePath.Length - 1);
var fullName = voucher.FirstName;
if (!string.IsNullOrEmpty(voucher.LastName))
fullName += " " + voucher.LastName;
var nvEngine = new NVelocityEngine();
nvEngine.Context.Add("FullName", fullName);
nvEngine.Context.Add("MallName", voucher.Mall.Name);
nvEngine.Context.Add("ConfirmationCode", voucher.ConfirmationCode);
nvEngine.Context.Add("BasePath", basePath);
nvEngine.Context.Add("TermsLink", termsLink);
nvEngine.Context.Add("LogoFilename", voucher.Mall.LogoFilename);
var htmlTemplate = System.IO.File.ReadAllText(
Request.MapPath("~/App_Data/Templates/Voucher.html"));
return Content(nvEngine.Render(htmlTemplate));
}
嘗試使用Spark View引擎( http://www.sparkviewengine.com/ )。 它易於使用,比標准引擎更好,並且不需要偽造上下文。
您也可以從此答案中使用function 將視圖呈現為字符串 ,但這需要偽造的上下文。 這是標准視圖引擎的工作方式,您對此無能為力。
這是我的擴展類,用於生成字符串視圖。 首先是標准視圖引擎,其次是Spark:
public static class ControllerHelper
{
/// <summary>Renders a view to string.</summary>
public static string RenderViewToString(this Controller controller,
string viewName, object viewData)
{
//Getting current response
var response = HttpContext.Current.Response;
//Flushing
response.Flush();
//Finding rendered view
var view = ViewEngines.Engines.FindPartialView(controller.ControllerContext, viewName).View;
//Creating view context
var viewContext = new ViewContext(controller.ControllerContext, view,
controller.ViewData, controller.TempData);
//Since RenderView goes straight to HttpContext.Current, we have to filter and cut out our view
var oldFilter = response.Filter;
Stream filter = new MemoryStream(); ;
try
{
response.Filter = filter;
viewContext.View.Render(viewContext, null);
response.Flush();
filter.Position = 0;
var reader = new StreamReader(filter, response.ContentEncoding);
return reader.ReadToEnd();
}
finally
{
filter.Dispose();
response.Filter = oldFilter;
}
}
/// <summary>Renders a view to string.</summary>
public static string RenderSparkToString(this Controller controller,
string viewName, object viewData)
{
var view = ViewEngines.Engines.FindPartialView(controller.ControllerContext, viewName).View;
//Creating view context
var viewContext = new ViewContext(controller.ControllerContext, view,
controller.ViewData, controller.TempData);
var sb = new StringBuilder();
var writer = new StringWriter(sb);
viewContext.View.Render(viewContext, writer);
writer.Flush();
return sb.ToString();
}
}
如果您想要簡單的文本替換,.NET可以:
ListDictionary replacements = new ListDictionary();
// Replace hard coded values with objects values
replacements.Add("{USERNAME}", "NewUser");
replacements.Add("{SITE_URL}", "http://yourwebsite.com");
replacements.Add("{SITE_NAME}", "My site's name");
string FromEmail= "from@yourwebsite.com";
string ToEmail = "newuser@gmail.com";
//Create MailDefinition
MailDefinition md = new MailDefinition();
//specify the location of template
md.BodyFileName = "~/Templates/Email/Welcome.txt";
md.IsBodyHtml = true;
md.From = FromEmail;
md.Subject = "Welcome to youwebsite.com ";
System.Web.UI.Control ctrl = new System.Web.UI.Control { ID = "IDontKnowWhyThisIsRequiredButItWorks" };
MailMessage message = md.CreateMailMessage(ToEmail , replacements, ctrl);
//Send the message
SmtpClient client = new SmtpClient();
client.Send(message);
還有Welcome.txt文件
Welcome - {SITE_NAME}<br />
<br />
Thank you for registering at {SITE_NAME}<br />
<br />
Your account is activated and ready to go! <br />
To login, visit <a href="{SITE_URL}">{SITE_NAME}</a> and use the following credentials:
<br />
username: <b>{USERNAME}</b><br />
password: use the password you registered with
<br />
<br />
- {SITE_NAME} Team
同樣,這僅適用於簡單的字符串替換。 如果您打算通過電子郵件發送更多數據,則需要正確設置其格式然后替換它。
我為LukLed的RenderSparkToString方法創建了一個重載,該方法允許您在視圖中使用火花布局:
public static string RenderSparkToString(this Controller controller,
string viewName, string masterName, object viewData)
{
var view = ViewEngines.Engines.FindView(controller.ControllerContext, viewName, masterName).View;
//Creating view context
var viewContext = new ViewContext(controller.ControllerContext, view,
controller.ViewData, controller.TempData);
var sb = new StringBuilder();
var writer = new StringWriter(sb);
viewContext.View.Render(viewContext, writer);
writer.Flush();
return sb.ToString();
}
我同意安德魯。 我希望可以使用Web窗體視圖引擎來實現此目的的簡便方法。
盡管這是一個有點舊的線程,但我還是鼓勵您看一下MvcMailer NuGet程序包-它大大簡化了整個過程並使郵件程序表現出良好的行為。
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