获取已配置的HttpHandler列表

Question

我的 Web.Config.xml 文件配置了一组受支持的客户端扩展程序＆＃39; http请求。这些请求由相同的HttpHandler实现处理。我使用扩展来启用处理程序中的功能。以下是结构的副本。

<system.webServer>
    <handlers accessPolicy="Read, Execute, Script">          
        <add name="Handler1" path="*.path1" verb="*" type="namespace.class, assembly" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode" />
        <add name="Handler2" path="*.path2" verb="*" type="namespace.class, assembly" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode" />
        <add name="Handler3" path="*.path3" verb="*" type="namespace.class, assembly" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode" />
        <add name="Handler4" path="*.path4" verb="*" type="namespace.class, assembly" resourceType="Unspecified" requireAccess="Script" preCondition="integratedMode" />
    </handlers>        
</system.webServer>

我希望实现第5个处理程序，以便客户端可以发出初始请求以获取支持的路径（功能），这样他们就不会尝试发出不受支持的请求。我希望通过添加/删除处理程序来控制启用的功能。

如何在Handler实现中获取已配置处理程序运行时的列表？

我希望使用该列表来构建我的回复。

我查看了System.Web.Configuration.HttpHandlersSection，但当我尝试获取system.webServer部分时，我收到了System.Configuration.IgnoreSection个对象。

Answer 1

我发现要阅读system.webServer/handlers，您需要参考

  

Microsoft.Web.Administration.dll

取代System.Configuration。

在Windows功能中启用IIS管理控制台后，可以在\ windows \ system32 \ inetsrv文件夹中找到该DLL。

以下是一些示例代码：

/// <summary>
/// Returns a list of configured handler names
/// </summary>
/// <param name="filter">the handler name must contain this value to be included in the list</param>
/// <returns>a list of handler names that matches the filter or all handler names if filter is null</returns>
public static List<string> GetHandlerNames(string filter)
{
    string websiteName = System.Web.Hosting.HostingEnvironment.ApplicationHost.GetSiteName();
    Configuration o = srvMgr.GetWebConfiguration(websiteName);
    ConfigurationElementCollection c1 = o.GetSection("system.webServer/handlers").GetCollection();

    if (filter != null)
    {
        return c1.Where(x => x.GetAttribute("name").Value.ToString().ToLowerInvariant().Contains(filter.ToLowerInvariant())).Select(x => x.GetAttributeValue("name").ToString()).ToList();
    }
    else
    {
        return c1.Select(x => x.GetAttributeValue("name").ToString()).ToList();
    }
}   


/// <summary>
/// Returns a list of configured handler paths 
/// </summary>
/// <param name="filter">the handler name must contain this value to be included in the list</param>
/// <returns>a list of handler paths that matches the filter or all handler paths if filter is null</returns>
public static List<string> GetHandlerPaths(string filter)
{
    string websiteName = System.Web.Hosting.HostingEnvironment.ApplicationHost.GetSiteName();
    Configuration o = srvMgr.GetWebConfiguration(websiteName);
    ConfigurationElementCollection c1 = o.GetSection("system.webServer/handlers").GetCollection();

    if (filter != null)
    {
        return c1.Where(x => x.GetAttribute("name").Value.ToString().ToLowerInvariant().Contains(filter.ToLowerInvariant())).Select(x => x.GetAttributeValue("path").ToString().Replace("*.", "")).ToList();
    }
    else
    {
        return c1.Select(x => x.GetAttributeValue("path").ToString()).ToList();
    }
}