大卫的解决办法很好。但是我发现页面中的<script>警报(document.domain);</script>仍然警告“localhost”，因为项目Url仍然是localhost，即使它已经被http://dev.example.com覆盖。我遇到的另一个问题是，它提醒我端口80已经在使用，即使我已经禁用Skype使用80端口号，由大卫默多克推荐。所以我想出了另一个更简单的解决方案:

Run Notepad as administrator, and open the C:\Windows\System32\drivers\etc\hosts, add 127.0.0.1 mydomain, and save the file; Open the web project with Visual Studio 2013 (Note: must also run as administrator), right-click the project -> Properties -> Web, (lets suppose the Project Url under the "IIS Express" option is http://localhost:33333/), then change it from http://localhost:33333/ to http://mydomain:333333/ Note: After this change, you should neither click the "Create Virtual Directory" button on the right of the Project Url box nor click the Save button of the Visual Studio as they won't be succeeded. You can save your settings after next step 3. Open %USERPROFILE%\My Documents\IISExpress\config\applicationhost.config, search for "33333:localhost", then update it to "33333:mydomain" and save the file. Save your setting as mentioned in step 2. Right click a web page in your visual studio, and click "View in Browser". Now the page will be opened under http://mydomain:333333/, and <script>alert(document.domain);</script> in the page will alert "mydomain".

注意:上面列出的端口号假设为33333。您需要将其更改为您的visual studio设置的端口号。

Post编辑:今天我尝试了另一个域名，得到以下错误:无法启动IIS Express Web服务器。注册URL失败…访问被拒绝。(0 x80070005)。我通过右键单击Windows任务栏右下角的IIS Express图标退出IIS Express，然后以管理员身份重新启动我的visual studio，问题就解决了。

在我的WebMatrix IIS Express安装中，从“*:80:localhost”更改为“*:80:custom”。hostname“没有工作(“坏的主机名”，即使有适当的etc\hosts映射)，但“*:80:”工作-并且没有其他答案所要求的额外步骤。注意，“*:80:*”不会这样做;去掉第二个星号。

大卫的解决办法很好。但是我发现页面中的<script>警报(document.domain);</script>仍然警告“localhost”，因为项目Url仍然是localhost，即使它已经被http://dev.example.com覆盖。我遇到的另一个问题是，它提醒我端口80已经在使用，即使我已经禁用Skype使用80端口号，由大卫默多克推荐。所以我想出了另一个更简单的解决方案:

Run Notepad as administrator, and open the C:\Windows\System32\drivers\etc\hosts, add 127.0.0.1 mydomain, and save the file; Open the web project with Visual Studio 2013 (Note: must also run as administrator), right-click the project -> Properties -> Web, (lets suppose the Project Url under the "IIS Express" option is http://localhost:33333/), then change it from http://localhost:33333/ to http://mydomain:333333/ Note: After this change, you should neither click the "Create Virtual Directory" button on the right of the Project Url box nor click the Save button of the Visual Studio as they won't be succeeded. You can save your settings after next step 3. Open %USERPROFILE%\My Documents\IISExpress\config\applicationhost.config, search for "33333:localhost", then update it to "33333:mydomain" and save the file. Save your setting as mentioned in step 2. Right click a web page in your visual studio, and click "View in Browser". Now the page will be opened under http://mydomain:333333/, and <script>alert(document.domain);</script> in the page will alert "mydomain".

注意:上面列出的端口号假设为33333。您需要将其更改为您的visual studio设置的端口号。

Post编辑:今天我尝试了另一个域名，得到以下错误:无法启动IIS Express Web服务器。注册URL失败…访问被拒绝。(0 x80070005)。我通过右键单击Windows任务栏右下角的IIS Express图标退出IIS Express，然后以管理员身份重新启动我的visual studio，问题就解决了。

我试了以上所有的方法，都没用。解决这个问题的方法是在hosts文件中添加IPv6绑定。在@David murdoch回答的第五步中，添加两行而不是一行，即:

127.0.0.1 dev.example.com
::1 dev.example.com

我通过从命令行检查$ ping localhost来计算出来，它通常返回:

来自127.0.0.1的回复:bytes=32 time<1ms TTL=128

相反，它现在返回:

回复from::1:时间<1ms

我不知道为什么，但是由于某种原因，IIS Express开始使用IPv6而不是IPv4。

这是为我工作(更新的VS 2013，见2010年的修订历史，VS 2015见这个:https://stackoverflow.com/a/32744234/218971):

Right-click your Web Application Project ▶ Properties ▶ Web, then configure the Servers section as follows: Select IIS Express ▼ from the drop down Project Url: http://localhost Override application root URL: http://dev.example.com Click Create Virtual Directory (if you get an error here you may need to disable IIS 5/6/7/8, change IIS's Default Site to anything but port :80, make sure Skype isn't using port 80, etc.) Optionally: Set the Start URL to http://dev.example.com Open %USERPROFILE%\My Documents\IISExpress\config\applicationhost.config (Windows XP, Vista, and 7) and edit the site definition in the <sites> config block to be along the lines of the following: <site name="DevExample" id="997005936"> <application path="/" applicationPool="Clr2IntegratedAppPool"> <virtualDirectory path="/" physicalPath="C:\path\to\application\root" /> </application> <bindings> <binding protocol="http" bindingInformation=":80:dev.example.com" /> </bindings> <applicationDefaults applicationPool="Clr2IntegratedAppPool" /> </site> If running MVC: make sure the applicationPool is set to one of the "Integrated" options (like "Clr2IntegratedAppPool"). Open your hosts file and add the line 127.0.0.1 dev.example.com. ► Start your application!

评论中有一些很棒的建议:

您可能需要以管理员身份运行Visual Studio。 如果你想让其他开发人员看到你的IIS，运行netsh http add urlacl url=http://dev.example.com:80/ user=everyone 如果您希望站点为所有主机解析，请设置bindingInformation="*:80:"。 使用任何端口，80只是方便。要解析所有主机，您需要以管理员身份运行Visual Studio

按照Jaro的建议，我可以在Windows XP和IIS Express(通过Web Matrix安装)下进行小的修改，并且不局限于localhost。这只是一个正确设置绑定的问题。

Use WebMatrix to create a new site from folder in your web application root. Close WebMatrix. Open %USERPROFILE%\My Documents\IISExpress\config\applicationhost.config (Windows XP. Vista and 7 paths will be similar) and edit the site definition in the <sites> config block to be along the lines of the following: <site name="DevExample" id="997005936"> <application path="/" applicationPool="Clr2IntegratedAppPool"> <virtualDirectory path="/" physicalPath="C:\path\to\application\root" /> </application> <bindings> <binding protocol="http" bindingInformation="*:80:dev.example.com" /> </bindings> <applicationDefaults applicationPool="Clr2IntegratedAppPool" /> </site>

如果运行MVC，则将applicationPool设置为“Integrated”选项之一。