httpHandlers和httpModules接口介绍 (5)

IHttpHandler工厂

class TestHandlerFactory : IHttpHandlerFactory
 {
public IHttpHandler GetHandler
(HttpContext context, string requestType, string url, string pathTranslated)
{

string fname = url.Substring(url.IndexOf('/') + 1);
while (fname.IndexOf('/') != -1)
fname = fname.Substring(fname.IndexOf('/') + 1);
string cname = fname.Substring(0, fname.IndexOf('.'));
string className ="";
className = "ClassLibrary831.CodeHandler";
object h = null;
try
{
//h = new TestHandler();
h = Activator.CreateInstance(Type.GetType(className));
}
catch (Exception e)
{
throw new HttpException("工厂不能为类型" + cname + "创建实例。", e);
}
return (IHttpHandler)h;
}
public void ReleaseHandler(IHttpHandler handler)
{
}
 }(车延禄)

配置文件

<httpHandlers>
<add verb="*" path
="default21.aspx,default22.aspx" type
="ClassLibrary831.TestHandlerFactory,
ClassLibrary831"></add>
   </httpHandlers>

这样TestHandlerFactory就会根据请求的不同页面执行不同的HttpHandler处理程序了。

HttpHandler使用会话

如果要在处理程序中使用Session，那必须把该HttpHandler实现IRequiresSessionState接口，,IRequiresSessionState接口是个空接口，它没有抽象方法，只是一个标记。此处就不作例子验证了