asp.net 利用Web.config实现整站301永久重定向

1、在web.config加入配置

<appSettings><add key="WebDomain" value="mhzg.net"/><add key="URL301Location" value=""/> </appSettings>

2、在当前解决方案下新建一个类库项目

3、新建一个cs，命名为：Domain301.cs

using System;using System.Web;using System.Configuration;namespace Domain{public class RedirectNewDomain : IHttpModule{public void Dispose(){}public void Init(HttpApplication context){context.AuthorizeRequest += (new EventHandler(Process301));}public void Process301(object sender, EventArgs e){HttpApplication app = (HttpApplication)sender;HttpRequest request = app.Context.Request;string lRequestedPath = request.Url.DnsSafeHost.ToString();string strDomainURL = ConfigurationManager.AppSettings["WebDomain"].ToString();string strWebURL = ConfigurationManager.AppSettings["URL301Location"].ToString();if (lRequestedPath.IndexOf(strWebURL) == -1){app.Response.StatusCode = 301;app.Response.AddHeader("Location", lRequestedPath.Replace(lRequestedPath, "" + strWebURL + request.RawUrl.ToString().Trim()));app.Response.End();}}}}

4.在web.config里注册

<httpModules><add name="Redirect301" type="RedirectNewDomain, Domain" /></httpModules>

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