以编程方式创建ftp站点

Question

我已经编写了在ftp中创建新站点的代码。 但它给com例外。 该代码随附以供参考。

异常详细信息是

System.Runtime.InteropServices.COMException was unhandled
  Message="Filename: \r\nError: Unrecognized element 'ftpServer'\r\n\r\n"
  Source=""
  ErrorCode=-2147023483
  StackTrace:
       at Microsoft.Web.Administration.Interop.IAppHostElement.GetElementByName(String bstrSubName)
       at Microsoft.Web.Administration.ConfigurationElement.GetChildElement(String elementName)
       at WindowsFormsTest.Form2.CreateFTPSite(String serverName, String siteName, String siteID) in D:\My Projects\WindowsFormsTest\WindowsFormsTest\Form2.cs:line 48
       at WindowsFormsTest.Form2.button1_Click(Object sender, EventArgs e) in D:\My Projects\WindowsFormsTest\WindowsFormsTest\Form2.cs:line 25
       at System.Windows.Forms.Control.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnClick(EventArgs e)
       at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.ButtonBase.WndProc(Message& m)
       at System.Windows.Forms.Button.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.Run(Form mainForm)
       at WindowsFormsTest.Program.Main() in D:\My Projects\WindowsFormsTest\WindowsFormsTest\Program.cs:line 18
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: 

创建ftp站点的代码：

using(ServerManager serverManager = new ServerManager()) { 
        Microsoft.Web.Administration.Configuration config = serverManager.GetApplicationHostConfiguration();

        ConfigurationSection sitesSection = config.GetSection("system.applicationHost/sites");

        ConfigurationElementCollection sitesCollection = sitesSection.GetCollection();

        ConfigurationElement siteElement = sitesCollection.CreateElement("site");
        siteElement["name"] = @"eMentorftp";

        ConfigurationElementCollection bindingsCollection = siteElement.GetCollection("bindings");

        ConfigurationElement bindingElement = bindingsCollection.CreateElement("binding");
        bindingElement["protocol"] = @"ftp";
        bindingElement["bindingInformation"] = @"*:21:";
        bindingsCollection.Add(bindingElement);

        ConfigurationElement ftpServerElement = siteElement.GetChildElement("ftpServer");

        ConfigurationElement securityElement = ftpServerElement.GetChildElement("security");

        ConfigurationElement sslElement = securityElement.GetChildElement("ssl");
        sslElement["serverCertHash"] = @"53FC3C74A1978C734751AB7A14A3E48F70A58A84";
        sslElement["controlChannelPolicy"] = @"SslRequire";
        sslElement["dataChannelPolicy"] = @"SslRequire";

        ConfigurationElement authenticationElement = securityElement.GetChildElement("authentication");

        ConfigurationElement basicAuthenticationElement = authenticationElement.GetChildElement("basicAuthentication");
        basicAuthenticationElement["enabled"] = true;

        ConfigurationElementCollection siteCollection = siteElement.GetCollection();

        ConfigurationElement applicationElement = siteCollection.CreateElement("application");
        applicationElement["path"] = @"/";

        ConfigurationElementCollection applicationCollection = applicationElement.GetCollection();

        ConfigurationElement virtualDirectoryElement = applicationCollection.CreateElement("virtualDirectory");
        virtualDirectoryElement["path"] = @"/";
        virtualDirectoryElement["physicalPath"] = @"D:\Ftp";
        applicationCollection.Add(virtualDirectoryElement);
        siteCollection.Add(applicationElement);
        sitesCollection.Add(siteElement);

        serverManager.CommitChanges();

Answer 1

您可以从异常中判断出您的错误是什么。 查看异常堆栈跟踪中的第一行：

未处理System.Runtime.InteropServices.COMException Message =“ Filename：\\ r \\ nError：无法识别的元素'ftpServer'\\ r \\ n \\ r \\ n” Source =“” ErrorCode = -2147023483

首先，我们看到“无法识别的元素'ftpserver'”-它应该告诉我们很多有关在查看您的代码时发生的情况的信息。 但是除此之外，我们还提供了一个错误代码，该错误代码告诉我们准确抛出COMException的原因。 如果将错误代码解码为无符号的int（十六进制），则会得到：

0x80070585

这对应于以下错误代码：

• 8：失败
• 7：Win32
• 585 ：（十进制1413）：无效的索引（ERROR_INVALID_INDEX）

有关错误代码的更多信息，请参见HRESULT和Win32错误代码 。

因此，我们抛出了COMException，因为我们使用了无效的索引。 并且在异常消息中得到“无法识别的元素'ftpServer'”。 查看您的代码，通过告诉sitesCollection添加一个名为“ site”的新元素来创建一个新的ConfigurationElement siteElement：

Microsoft.Web.Administration.Configuration config = serverManager.GetApplicationHostConfiguration();
ConfigurationSection sitesSection = config.GetSection("system.applicationHost/sites");
ConfigurationElementCollection sitesCollection = sitesSection.GetCollection();
ConfigurationElement siteElement = sitesCollection.CreateElement("site");

然后，您为网站创建一个名称，并在网站的绑定集合中创建绑定：

siteElement["name"] = @"eMentorftp";
ConfigurationElementCollection bindingsCollection = siteElement.GetCollection("bindings");
ConfigurationElement bindingElement = bindingsCollection.CreateElement("binding");
bindingElement["protocol"] = @"ftp";
bindingElement["bindingInformation"] = @"*:21:";
bindingsCollection.Add(bindingElement);

不幸的是，您然后尝试使用名称“ ftpServer”获取站点的子元素：

ConfigurationElement ftpServerElement = siteElement.GetChildElement("ftpServer"); 

但是，刚刚创建的ConfigurationElement siteElement没有名为ftpServer的子级！ 所以我们得到一个无效的索引并抛出异常。 您是要在此代码行中创建子元素吗？

顺便说一句，我想这是由于.NET接口与基础IIS7 COM对象互操作而导致的COMException。 根本不是Microsoft.Web命名空间的专家，这只是一个猜测。