java中检测主机名
是否可以检测java中使用的主机名（甚至通过cname）？
我正在寻找类似的东西： http://api.drupal.org/api/function/conf_path/6
在该代码中，drupal 检查哪些域名正在访问它，以便加载正确的配置（多站点）。如果该域与任何配置都不匹配，则只会转到默认配置。
Is it possible to detect the hostname used in java (even through a cname)?
I am looking for something similar to this:
http://api.drupal.org/api/function/conf_path/6
In that code, drupal checks to see what domain name is accessing it in order to load the correct configuration (multi-site). If the domain doesn't match any configurations, it just goes to the default configuration.
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看看 InetAddress.getLocalHost( )，然后调用 getHostName() 返回的值，它正是这样做的。
请注意，并非所有计算机都能够解析可用于本地主机名的网络接口，并且多宿主计算机也会遇到一些额外的复杂情况。因此，如果您正在开发需要在各种情况下工作的软件，请正确考虑边缘情况以及最佳路径。
Have a look at InetAddress.getLocalHost(), followed by calling getHostName() on the returned value, which does exactly this.
Be aware that not all machines will be able to resolve a network interface which can be used for the local hostname, and that multi-homed machines run into some additional complications too. Thus if you're developing software that will need to work in a variety of situations, consider the edge cases properly as well as the happy path.
当然，这样做会导致每个 getHostName() 调用进行反向 DNS 查找。
对于繁忙的网站来说，这是一种性能损失。
我建议执行 getHostAddress() 然后查找主机名。
Of course doing this causes a reverse DNS lookup for each getHostName() call.
It is a performance penalty on busy sites.
I would recommend doing getHostAddress() and later on looking up the host names.