概述

本文记录Mac + IDEA开发，公司 + 远程办公时遇到的两个问题，记录一下。

问题

cannot use an unresolved DNS server address: [fe80::1%en0]:53

在家里，连上公司的VPN后，即可打开公司内网，远程办公。一切正常。某次，本地启动某个应用时报错：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redisson' defined in class path resource [org/redisson/spring/starter/RedissonAutoConfiguration.class]: 
Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.redisson.api.RedissonClient]: Factory method 'redisson' threw exception; 
nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:627)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:456)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1321)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1160)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:277)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1171)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:857)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:760)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.redisson.api.RedissonClient]: Factory method 'redisson' threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:622)
Caused by: java.lang.ExceptionInInitializerError: null
at io.netty.resolver.dns.UnixResolverDnsServerAddressStreamProvider.parseSilently(UnixResolverDnsServerAddressStreamProvider.java:76)
at io.netty.resolver.dns.DnsServerAddressStreamProviders$1.provider(DnsServerAddressStreamProviders.java:57)
at io.netty.resolver.dns.DnsServerAddressStreamProviders$1.<init>(DnsServerAddressStreamProviders.java:36)
at io.netty.resolver.dns.DnsServerAddressStreamProviders.<clinit>(DnsServerAddressStreamProviders.java:34)
at org.redisson.connection.MasterSlaveConnectionManager.<init>(MasterSlaveConnectionManager.java:193)
at org.redisson.connection.MasterSlaveConnectionManager.<init>(MasterSlaveConnectionManager.java:156)
at org.redisson.config.ConfigSupport.createConnectionManager(ConfigSupport.java:189)
at org.redisson.Redisson.<init>(Redisson.java:123)
at org.redisson.Redisson.create(Redisson.java:162)
at org.redisson.spring.starter.RedissonAutoConfiguration.redisson(RedissonAutoConfiguration.java:145)
at org.redisson.spring.starter.RedissonAutoConfiguration$$EnhancerBySpringCGLIB$$5645a6ee.CGLIB$redisson$0(<generated>)
at org.redisson.spring.starter.RedissonAutoConfiguration$$EnhancerBySpringCGLIB$$5645a6ee$$FastClassBySpringCGLIB$$d05cdc13.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363)
at org.redisson.spring.starter.RedissonAutoConfiguration$$EnhancerBySpringCGLIB$$5645a6ee.redisson(<generated>)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
Caused by: java.lang.IllegalArgumentException: cannot use an unresolved DNS server address: [fe80::1%en0]:53
at io.netty.resolver.dns.DnsServerAddresses.sanitize(DnsServerAddresses.java:179)
at io.netty.resolver.dns.DnsServerAddresses.sequential(DnsServerAddresses.java:67)
at io.netty.resolver.dns.DefaultDnsServerAddressStreamProvider.<clinit>(DefaultDnsServerAddressStreamProvider.java:107)

报错分析：应用启动时，依赖注入RedissonClient，注入失败。

检查Redis启动是否正常，借助于Another Redis Desktop Manager工具，得知Redis单节点是正常的。由于是本地开发，故使用笔记本安装的本地Redis。另外，把127.0.0.1换成localhost，还是一样的报错信息。

附redisson-dev.yml配置文件：

masterSlaveServersConfig:idleConnectionTimeout: 10000connectTimeout: 10000timeout: 3000retryAttempts: 3retryInterval: 1500failedSlaveReconnectionInterval: 3000failedSlaveCheckInterval: 60000password: nullsubscriptionsPerConnection: 5clientName: nullloadBalancer: !<org.redisson.connection.balancer.RoundRobinLoadBalancer> { }subscriptionConnectionMinimumIdleSize: 1subscriptionConnectionPoolSize: 50slaveConnectionMinimumIdleSize: 32slaveConnectionPoolSize: 64masterConnectionMinimumIdleSize: 32masterConnectionPoolSize: 64readMode: "SLAVE"subscriptionMode: "SLAVE"slaveAddresses:- "redis://127.0.0.1:6379"masterAddress: "redis://127.0.0.1:6379"database: 0
threads: 0
nettyThreads: 0
codec: !<org.redisson.codec.FstCodec> { }
transportMode: "NIO"

想到之前为了解决另外一个问题时，有设置过IDEA的启动参数：-Djava.net.preferIPv4Stack=true

去掉这个启动参数，应用启动正常。

java.net.SocketException: Invalid argument

上面提到的问题，详细的报错日志为：

ERROR | org.apache.tomcat.util.net.NioEndpoint | log | 175 | - Error setting socket options
java.net.SocketException: Invalid argument
at java.base/sun.nio.ch.Net.setIntOption0(Native Method)at java.base/sun.nio.ch.Net.setSocketOption(Net.java:373)at java.base/sun.nio.ch.SocketChannelImpl.setOption(SocketChannelImpl.java:234)at java.base/sun.nio.ch.SocketAdaptor.setIntOption(SocketAdaptor.java:280)at java.base/sun.nio.ch.SocketAdaptor.setSoLinger(SocketAdaptor.java:315)at org.apache.tomcat.util.net.SocketProperties.setProperties(SocketProperties.java:199)at org.apache.tomcat.util.net.NioEndpoint.setSocketOptions(NioEndpoint.java:401)at org.apache.tomcat.util.net.NioEndpoint.setSocketOptions(NioEndpoint.java:73)at org.apache.tomcat.util.net.Acceptor.run(Acceptor.java:115)at java.base/java.lang.Thread.run(Thread.java:829)

一个规律性现象：此日志精确打印5次，且不影响业务正常使用，postman接口调试正常完成。

参考java-net-socketexception-invalid-argument-connect

在IDEA debug模式启动参数里新增配置-Djava.net.preferIPv4Stack=true，报错消失。

注：我的开发环境

Mac：
芯片 Apple M2
MacOS 13.0 (22A380)
JDK：
openJDK 11

总结

在公司办公时，启动应用后，postman调试接口时偶尔报错，报错日志如上述问题2。下班后在家里办公时，启动应用报错日志，见上述问题1。

反思

为啥啊？？？

参考

cannot use an unresolved DNS server address