java - 在 Java 8 中，如何在我的环境中不对其进行硬编码来获取我的主机名？

Question

我们刚刚在 Amazon Linux 上升级到 Java 8。我们正在使用 Spring 4.3.8.RELEASE。过去我们可以通过在我们的应用程序上下文文件中设置 bean 来获取我们的机器主机名，就像这样......

<bean id="localhostInetAddress" class="java.net.InetAddress" factory-method="getLocalHost" />
<bean id="hostname" factory-bean="localhostInetAddress" factory-method="getHostName" />

但在 Java 8 中，bean“主机名”现在包含字符串

localhost

在 Java 8 之前，它曾经包含在命令行上运行的“主机名”值，即

[myuser@machine1 ~]$ hostname
machine1.mydomain.org

如何重新配置​​我们的 bean 以便它获取命令行列出的主机名？我不想在任何地方硬编码。

Answer 1

来自 InetAddress java 8 is not getting the hostname :

There was similar bug fired in JDK.

What I understand is that they changed default resolution process.

They honor configuration in /etc/nsswitch.conf where hosts are configured for /etc/hosts that gives it main priority for name resolution.

Usually /etc/hosts has record for 127.0.0.1 localhost that provide name for host localhost