ASP.NET路由系统实现原理：HttpHandler的动态映射(5)

  43:     {
  44:         Uri uri = requestContext.HttpContext.Request.Url;
  45:         Uri baseAddress = new Uri(string.Format("{0}://{1}", uri.Scheme, uri.Authority));
  46:         Dictionary<string, string> variables = new Dictionary<string, string>();
  47:         foreach(var item in values)
  48:         {
  49:             variables.Add(item.Key, item.Value.ToString());
  50:         }
  51: 
  52:         //确定段变量是否被提供
  53:         foreach (var name in this.UriTemplate.PathSegmentVariableNames)
  54:         {
  55:             if(!this.UriTemplate.Defaults.Keys.Any(key=> string.Compare(name,key,true) == 0) &&
  56:                 !values.Keys.Any(key=> string.Compare(name,key,true) == 0))
  57:             {
  58:                 return null;
  59:             }
  60:         }
  61:         //确定查询变量是否被提供
  62:         foreach (var name in this.UriTemplate.QueryValueVariableNames)
  63:         {
  64:             if(!this.UriTemplate.Defaults.Keys.Any(key=> string.Compare(name,key,true) == 0) &&
  65:                 !values.Keys.Any(key=> string.Compare(name,key,true) == 0))
  66:             {
  67:                 return null;
  68:             }
  69:         }
  70: 
  71:         Uri virtualPath = this.UriTemplate.BindByName(baseAddress, variables);
  72:         string strVirtualPath = virtualPath.ToString().ToLower().Replace(baseAddress.ToString().ToLower(),"");