mvc3实现用户自定义二级域名

第一个代码文件

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 public class DomainRoute : Route
{
private Regex domainRegex;
private Regex pathRegex;

public string Domain { get; set; }

public DomainRoute(string domain, string url, RouteValueDictionary defaults)
: base(url, defaults, new MvcRouteHandler())
{
Domain = domain;
}

public DomainRoute(string domain, string url, RouteValueDictionary defaults, IRouteHandler routeHandler)
: base(url, defaults, routeHandler)
{
Domain = domain;
}

public DomainRoute(string domain, string url, object defaults)
: base(url, new RouteValueDictionary(defaults), new MvcRouteHandler())
{
Domain = domain;
}

public DomainRoute(string domain, string url, object defaults, IRouteHandler routeHandler)
: base(url, new RouteValueDictionary(defaults), routeHandler)
{
Domain = domain;
}

public override RouteData GetRouteData(HttpContextBase httpContext)
{
// 构造 regex
domainRegex = CreateRegex(Domain);
pathRegex = CreateRegex(Url);

// 请求信息
string requestDomain = httpContext.Request.Headers["host"];
if (!string.IsNullOrEmpty(requestDomain))
{
if (requestDomain.IndexOf(":") > 0)
{
requestDomain = requestDomain.Substring(0, requestDomain.IndexOf(":"));
}
}
else
{
requestDomain = httpContext.Request.Url.Host;
}
string requestPath = httpContext.Request.AppRelativeCurrentExecutionFilePath.Substring(2) + httpContext.Request.PathInfo;

// 匹配域名和路由
Match domainMatch = domainRegex.Match(requestDomain);
Match pathMatch = pathRegex.Match(requestPath);

// 路由数据
RouteData data = null;
if (domainMatch.Success && pathMatch.Success)
{
data = new RouteData(this, RouteHandler);

// 添加默认选项
if (Defaults != null)
{
foreach (KeyValuePair<string, object> item in Defaults)
{
data.Values[item.Key] = item.Value;
}
}

// 匹配域名路由
for (int i = 1; i < domainMatch.Groups.Count; i++)
{
Group group = domainMatch.Groups[i];
if (group.Success)
{
string key = domainRegex.GroupNameFromNumber(i);

if (!string.IsNullOrEmpty(key) && !char.IsNumber(key, 0))
{
if (!string.IsNullOrEmpty(group.Value))
{
data.Values[key] = group.Value;
}
}
}
}

// 匹配域名路径
for (int i = 1; i < pathMatch.Groups.Count; i++)
{
Group group = pathMatch.Groups[i];
if (group.Success)
{
string key = pathRegex.GroupNameFromNumber(i);

if (!string.IsNullOrEmpty(key) && !char.IsNumber(key, 0))
{
if (!string.IsNullOrEmpty(group.Value))
{
data.Values[key] = group.Value;
}
}
}
}
}

return data;
}

public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
return base.GetVirtualPath(requestContext, RemoveDomainTokens(values));
}

public DomainData GetDomainData(RequestContext requestContext, RouteValueDictionary values)
{
// 获得主机名
string hostname = Domain;
foreach (KeyValuePair<string, object> pair in values)
{
hostname = hostname.Replace("{" + pair.Key + "}", pair.Value.ToString());
}

// Return 域名数据
return new DomainData
{
Protocol = "http",
HostName = hostname,
Fragment = ""
};
}

private Regex CreateRegex(string source)
{
// 替换
source = source.Replace("/", @"\/?");
source = source.Replace(".", @"\.?");
source = source.Replace("-", @"\-?");
source = source.Replace("{", @"(?<");
source = source.Replace("}", @">([a-zA-Z0-9_]*))");

return new Regex("^" + source + "$");
}

private RouteValueDictionary RemoveDomainTokens(RouteValueDictionary values)
{
Regex tokenRegex = new Regex(@"({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?({[a-zA-Z0-9_]*})*-?\.?\/?");
Match tokenMatch = tokenRegex.Match(Domain);
for (int i = 0; i < tokenMatch.Groups.Count; i++)
{
Group group = tokenMatch.Groups[i];
if (group.Success)
{
string key = group.Value.Replace("{", "").Replace("}", "");
if (values.ContainsKey(key))
values.Remove(key);
}
}

return values;
}
}

第二个代码文件

    public class DomainData
{
public string Protocol { get; set; }
public string HostName { get; set; }
public string Fragment { get; set; }
}

在global里注册实现

            routes.Add("DomainRoute", new DomainRoute(
"{subdomain}.您的域名.com", // Domain with parameters
"{controller}/{action}/{id}", // URL with parameters
new { subdomain = "", controller = "Home", action = "Index", id = "" } // Parameter defaults
));


在HomeController的index 里获取域名值

            //获取二级域名
var subdomain = RouteData.Values["subdomain"].ToString();

剩下的工作接着做



posted @ 2012-02-29 13:41 叶鹏 阅读(...) 评论(...) 编辑 收藏