我正在尝试奔跑slf4j with log4jopenJDK 8 上的 2.8（Ubuntu 上的最新版本8u131-b11-0ubuntu1.17.04.1).
当通过 maven openjdk 运行简单的 java 类时，无法解析本地主机名：
Exception in thread "AWT-EventQueue-0" java.lang.NoSuchFieldError: preferIPv6Address
at java.base/java.net.InetAddress.init(Native Method)
at java.base/java.net.InetAddress.init(Native Method)
at java.base/java.net.InetAddress.<clinit>(InetAddress.java:333)
at org.apache.logging.log4j.core.util.NetUtils.getLocalHostname(NetUtils.java:53)
at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:539)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:617)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:634)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:229)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:152)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194)
at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:122)
at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:43)
at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:46)
at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
看起来像方法
public static InetAddress getLocalHost() throws UnknownHostException
与 Oracle java 中的实现方式不同。
/etc/hosts包含 ipv6 记录：
::1 ip6-localhost ip6-loopback
该问题是由系统上安装的JDK9引起的。 Log4j 2.8 尚不兼容 Java 9。
删除 JDK9 或将首选项设置为 JDK8 应该可以解决该问题。在 Debian 上：
sudo update-alternatives --config java
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