public virtual void PostResolveRequestCache(HttpContextBase context)
{
//1.传入当前上下文对象，得到与当前请求匹配的SwiftRouteData对象
SwiftRouteData routeData = this.SwiftRouteCollection.GetRouteData(context);
if (routeData == null)
{
return;
}
//2.从SwiftRouteData对象里面得到当前的RouteHandler对象。
IRouteHandler routeHandler = routeData.RouteHandler;
if (routeHandler == null)
{
return;
}
//3.根据RequestContext对象得到处理当前请求的HttpHandler（MvcHandler）。
IHttpHandler httpHandler = routeHandler.GetHttpHandler(routeData, context);
if (httpHandler == null)
{
return;
}
//4.请求转到HttpHandler进行处理（进入到ProcessRequest方法）。这一步很重要，由这一步开始，请求才由UrlRoutingModule转到了MvcHandler里面
context.RemapHandler(httpHandler);
}
//通过上下文对象得到当前请求的路由表
public SwiftRouteData GetRouteData(HttpContextBase context)
{
var swiftRouteData = new SwiftRouteData();
//1.配置RouteHandler实例，这里的RouteHandler是在全局配置里面写进来的
swiftRouteData.RouteHandler = SwiftRoute.RouteHandler;
//2.获取当前请求的虚拟路径和说明
var virtualPath = context.Request.AppRelativeCurrentExecutionFilePath.Substring(2) + context.Request.PathInfo;
//3.先将默认路由配置写入当前请求的路由表
//每次请求只能读取默认值，而不能覆盖默认值
swiftRouteData.RouteValue = new Dictionary <string, object>();
foreach (var key in this.SwiftRoute.DefaultPath)
{
swiftRouteData.RouteValue[key.Key] = key.Value;
}
//4.如果当前请求虚拟路径为空，则访问默认路由表。否则从当前请求的url里面去取当前的controller和action的名称
if (!string.IsNullOrEmpty(virtualPath))
{
var arrTemplatePath = this.SwiftRoute.TemplateUrl.Split("{}/".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var arrRealPath = virtualPath.Split("/".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
for (var i = 0; i < arrTemplatePath.Length; i++)
{
var realPath = arrRealPath.Length > i ? arrRealPath[i] : null;
if (realPath == null)
{
break;
}
swiftRouteData.RouteValue[arrTemplatePath[i]] = realPath;
}
}
//5.去读当前请求的参数列表
var querystring = context.Request.QueryString.ToString();
if (string.IsNullOrEmpty(querystring))
{
return(swiftRouteData);
}
var parameters = querystring.Split("&".ToArray(), StringSplitOptions.RemoveEmptyEntries);
var oparam = new Dictionary <string, string>();
foreach (var parameter in parameters)
{
var keyvalue = parameter.Split("=".ToArray());
oparam[keyvalue[0]] = keyvalue[1];
}
swiftRouteData.RouteValue["parameters"] = oparam;
return(swiftRouteData);
}
