在 WebRole 中调用时，Environment.GetEnvironmentVariable(“RoleRoot”) 返回 null

发布于 2024-11-09 21:36:02 字数 620 浏览 0 评论 0原文

我有一个方法（在单独的类库中），由 WebRole 和 WorkerRole 调用。此方法包含文件的路径，使用 Environment.GetEnvironmentVariable("RoleRoot") 返回该路径，如下所示：

private string FooPath()    
{
    string appRoot = Environment.GetEnvironmentVariable("RoleRoot");
    return Path.Combine(appRoot + @"\", @"approot\file.foo");
}

当我从 WorkerRole 调用此方法时，路径会正常返回。但是当我从 WebRole 调用它时，我得到 null。

有什么想法吗？

编辑：我正在使用 APNS-Sharp 向 iOS 发送推送消息，它需要 .p12 证书才能工作。目前，我的类库的根目录中有 .p12（由 WebRole 和 WorkerRole 调用）。但重点是：为什么当我从 WebRole 调用时 RoleRoot 返回 null，而当我从 WorkerRole 调用时返回路径？

原文

I have a method (in a separated class library) which is called by a WebRole and a WorkerRole. This method contains the path of a file, which is returned using Environment.GetEnvironmentVariable("RoleRoot"), as follows:

private string FooPath()    
{
    string appRoot = Environment.GetEnvironmentVariable("RoleRoot");
    return Path.Combine(appRoot + @"\", @"approot\file.foo");
}

When I call this method from a WorkerRole the path is returned normally. But when I call it from a WebRole I get null.

Any ideas?

EDIT: I am using APNS-Sharp to send push messages to iOS and it requires a .p12 certificate in order to work. Currently I have the .p12 in the root of my class library (which is called by both WebRole and WorkerRole). But the point is: Why RoleRoot returns null when I call it from a WebRole but returns the path when I call from a WorkerRole?

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何以畏孤独 2024-11-16 21:36:02

RoleRoot 对于 WebRole 返回 false，因为 WebRole 使用 IIS，就像普通网站一样。这就是为什么很难从 WebRole 获取环境变量。

为了正确获取路径，我必须使用经典的 Server.MapPath 并引用 bin 文件夹，而不是 approot：

private string FooPathWebRole()    
{
    string appRoot = HttpContext.Current.Server.MapPath(@"~\");
    return Path.Combine(appRoot + @"\", @"bin\file.foo");
}

对于 WorkerRole 没有任何更改：

private string FooPathWorkerRole()    
{
    string appRoot = Environment.GetEnvironmentVariable("RoleRoot");
    return Path.Combine(appRoot + @"\", @"approot\file.foo");
}

此外，我发现Azure不导入p12证书。我必须将其转换为另一种格式，我认为这对我不起作用。因此，最好的选择是将它们放在应用程序的根目录中，并将其构建操作标记为内容。

RoleRoot returns false for WebRole because the WebRole uses IIS, just like a normal website. That's why it's difficult to get Environment Variables from a WebRole.

In order to get the path properly I had to use the classic Server.MapPath and reference the bin folder, instead of approot:

private string FooPathWebRole()    
{
    string appRoot = HttpContext.Current.Server.MapPath(@"~\");
    return Path.Combine(appRoot + @"\", @"bin\file.foo");
}

For the WorkerRole nothing has changed:

private string FooPathWorkerRole()    
{
    string appRoot = Environment.GetEnvironmentVariable("RoleRoot");
    return Path.Combine(appRoot + @"\", @"approot\file.foo");
}

In addition, I found out that Azure doesn't import p12 certificates. I would have to transform it into another format, which I don't believe would work for me. So, the best option is to place them on the root of the application and mark its Build Action to Content.

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