脱机时OSX Lion上的InetAddress.getLocalHost()分辨率 [英] InetAddress.getLocalHost() resolution on OSX Lion when offline

问题描述

在脱机工作(即未连接到Internet)时，是否有人在OSX Lion的Java中遇到Java的InetAddress.getLocalHost()分辨率问题?

Is anyone having issues with Java's InetAddress.getLocalHost() resolution in Java with OSX Lion when working offline (i.e. not connected to internet)?

似乎根本无法解析localhost:127.0.0.1:

It would appear that localhost:127.0.0.1 is not resolved at all:

Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
    at java.net.InetAddress.getLocalHost(InetAddress.java:1356)

我的/etc/hosts中没有什么特别的

Nothing special in my /etc/hosts:

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1       localhost
255.255.255.255 broadcasthost
::1             localhost 
fe80::1%lo0     localhost

我怀疑这不是Java问题，而是OSX Lion DNS解析问题.

I suspect this is not a Java issue, but rather an OSX Lion DNS resolution issue.

任何人都可以帮忙吗?

Can anyone help?

如果这不是合适的论坛，我在哪里可以问到这个问题?

If this is not the right forum, where can I ask about this?

关于如何在OSX级别上进一步调试的任何提示?

Any tips on how debug this further at OSX level?

UPDATE 26/10/2011-这可能是JDK错误，下面是测试:

UPDATE 26/10/2011 - This could be JDK bug, the following test:

InetAddress addr;
try {
   addr = InetAddress.getLocalHost();
   System.out.println("With localhost access: " + addr);
} catch (ArrayIndexOutOfBoundsException e) {
   addr = InetAddress.getByName(null);
   System.out.println("With reverse lookup: " + addr);
}

离线时会打印以下内容:

Would print the following when offline:

With reverse lookup: localhost/127.0.0.1

干杯， 加尔德(Galder)

Cheers, Galder

推荐答案

找到了解决此问题的方法，只需将localhost的别名添加到网络接口:

Found a way to workaround this issue, just add an alias for localhost to the network interface:

sudo ifconfig en0 alias 127.0.0.1

到位后，离线时我再也没有本地主机问题了.

Once that's in place, I get no localhost issues any more when offline.

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