Asp.net MVC学习日记五（自定义RouteHandler）

最新推荐文章于 2021-10-07 11:23:59 发布

最新推荐文章于 2021-10-07 11:23:59 发布 · 197 阅读

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本文介绍如何在Global.asax中添加自定义路由处理器，实现基于路径的RESTful风格控制器操作。通过在特定目录下创建CatalogRouteHandler类，该类继承自IRouteHandler，能够解析路径并根据命令（GET, DELETE, EDIT, POST）调用相应的Action方法。在HomeHandler中实现这些Action方法，并为每个Action添加对应的视图。访问时通过路径参数（如Home/Edit）触发相应操作。

1、Global.asax中添加

routes.MapRoute("DbContent", "{*path}",new { controller = "Home" }).RouteHandler = new CatalogRouteHandler();

2、在Controller文件夹下，添加CatalogRouteHandler类，让其继承自IRouteHandler

public class CatalogRouteHandler : IRouteHandler
{
public IHttpHandler GetHttpHandler(RequestContext requestContext)
{
string path = requestContext.RouteData.Values["path"] as string;

if (path == null)
{
requestContext.RouteData.Values["action"] = "Index";
//add the path minus the command back in
//requestContext.RouteData.Values["path"] = path;
}
else
{

//remove trailing slash if there is one
if (path.EndsWith("/"))
path = path.Substring(0, path.Length - 1);
if (path != null && path.Contains("/")) //valid path parameter
{
int lastIndex = path.LastIndexOf('/');
if (lastIndex >= 0)
{
string commandName = path.Substring(lastIndex + 1);

switch (commandName.ToUpper())
{
case "GET": //get the catalog item
requestContext.RouteData.Values["action"] = "Get";
//add the path minus the command back in
requestContext.RouteData.Values["path"] = path.Substring(0, lastIndex);
break;
case "DELETE": //delete catalog item
requestContext.RouteData.Values["action"] = "Delete";
//add the path minus the command back in
requestContext.RouteData.Values["path"] = path.Substring(0, lastIndex);
break;
case "EDIT": //edit catalog item
requestContext.RouteData.Values["action"] = "Edit";
//add the path minus the command back in
requestContext.RouteData.Values["path"] = path.Substring(0, lastIndex);
break;
case "POST": //save catalog item (insert/update)
requestContext.RouteData.Values["action"] = "Post";
//add the path minus the command back in
requestContext.RouteData.Values["path"] = path.Substring(0, lastIndex);
break;
default: //we will allow nothing to act as a GET
requestContext.RouteData.Values["action"] = "Get";
//add the path minus the command back in
requestContext.RouteData.Values["path"] = path;
break;
}

}
}
}

return new MvcHandler(requestContext);
}
}

3、在HomeHandler.cs分别添加Get，Delete，Edit，Post的Action。并添加其对应视图

public ActionResult Get(string path)
{
return View();
}
public ActionResult Delete(string path)
{
return View();
}
public ActionResult Post(string path)
{
return View();
}
public ActionResult Edit(string path)
{
return View();
}