ASP.NET一般处理程序访问Session问题

//引用命名空间
using System.Web.SessionState;

//继承IRequiresSessionState接口，拥有Session的读写权限
//继承IReadOnlySessionState接口，拥有Session的只读权限
public class Handler1 : IHttpHandler,IRequiresSessionState
{

public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
context.Response.Write("Hello World");
}

public bool IsReusable
{
get
{
return false;
}
}
}