[ActiveMQ]java.net.UnknownHostException: localhost

问题描述:

今天在配置ActiveMQ的时候,修改了ActiveMQ的配置文件:

启动的时候报错:

Loading message broker from: xbean:activemq.xml
INFO  BrokerService                  - ActiveMQ 4.1.1 JMS Message Broker (localhost) is starting
INFO  BrokerService                  - For help or more information please see: http://incubator.apache.org/activemq/
INFO  JDBCPersistenceAdapter         - Database driver recognized: [apache_derby_embedded_jdbc_driver]
INFO  DefaultDatabaseLocker          - Attempting to acquire the exclusive lock to become the Master broker
INFO  DefaultDatabaseLocker          - Becoming the master on dataSource: org.apache.derby.jdbc.EmbeddedDataSource@31ca9394
INFO  JournalPersistenceAdapter      - Journal Recovery Started from: Active Journal: using 5 x 20.0 Megs at: /home/dhcp2/lcdmp2_web/apache-activemq-4.1.1/activemq-data/journal
INFO  JournalPersistenceAdapter      - Journal Recovered: 0 message(s) in transactions recovered.
ERROR BrokerService                  - Failed to start ActiveMQ JMS Message Broker. Reason: java.net.UnknownHostException: localhost
java.net.UnknownHostException: localhost
   at java.net.ResolverCache.getHostByName(libgcj.so.7rh)
   at java.net.InetAddress.getAllByName(libgcj.so.7rh)
   at java.net.InetAddress.getByName(libgcj.so.7rh)
   at org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:76)
   at org.apache.activemq.transport.tcp.TcpTransportFactory.doBind(TcpTransportFactory.java:56)
   at org.apache.activemq.transport.TransportFactory.bind(TransportFactory.java:109)
   at org.apache.activemq.broker.TransportConnector.createTransportServer(TransportConnector.java:270)
   at org.apache.activemq.broker.TransportConnector.getServer(TransportConnector.java:122)
   at org.apache.activemq.broker.TransportConnector.start(TransportConnector.java:220)
   at org.apache.activemq.broker.BrokerService.startTransportConnector(BrokerService.java:1519)
   at org.apache.activemq.broker.BrokerService.startAllConnectors(BrokerService.java:1471)
   at org.apache.activemq.broker.BrokerService.start(BrokerService.java:402)
   at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:47)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1062)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1029)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:420)
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:245)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:141)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:242)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:156)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:290)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:348)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:161)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:51)
   at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:41)
   at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:57)
   at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:82)
   at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:47)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:82)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:46)
   at java.lang.reflect.Method.invoke(libgcj.so.7rh)
   at org.apache.activemq.console.Main.runTaskClass(Main.java:202)
   at org.apache.activemq.console.Main.main(Main.java:91)

ERROR: java.lang.RuntimeException: Failed to execute start task. Reason: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
java.lang.RuntimeException: Failed to execute start task. Reason: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
   at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:70)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:82)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:46)
   at java.lang.reflect.Method.invoke(libgcj.so.7rh)
   at org.apache.activemq.console.Main.runTaskClass(Main.java:202)
   at org.apache.activemq.console.Main.main(Main.java:91)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1032)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:420)
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:245)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:141)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:242)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:156)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:290)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:348)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:161)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:51)
   at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:41)
   at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:57)
   at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:82)
   at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:47)
   ...7 more
Caused by: java.net.UnknownHostException: localhost
   at java.net.ResolverCache.getHostByName(libgcj.so.7rh)
   at java.net.InetAddress.getAllByName(libgcj.so.7rh)
   at java.net.InetAddress.getByName(libgcj.so.7rh)
   at org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:76)
   at org.apache.activemq.transport.tcp.TcpTransportFactory.doBind(TcpTransportFactory.java:56)
   at org.apache.activemq.transport.TransportFactory.bind(TransportFactory.java:109)
   at org.apache.activemq.broker.TransportConnector.createTransportServer(TransportConnector.java:270)
   at org.apache.activemq.broker.TransportConnector.getServer(TransportConnector.java:122)
   at org.apache.activemq.broker.TransportConnector.start(TransportConnector.java:220)
   at org.apache.activemq.broker.BrokerService.startTransportConnector(BrokerService.java:1519)
   at org.apache.activemq.broker.BrokerService.startAllConnectors(BrokerService.java:1471)
   at org.apache.activemq.broker.BrokerService.start(BrokerService.java:402)
   at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:47)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1062)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1029)
   ...20 more
ERROR: java.lang.Exception: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
java.lang.Exception: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
   at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:71)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.runTask(ShellCommand.java:82)
   at org.apache.activemq.console.command.AbstractCommand.execute(AbstractCommand.java:50)
   at org.apache.activemq.console.command.ShellCommand.main(ShellCommand.java:46)
   at java.lang.reflect.Method.invoke(libgcj.so.7rh)
   at org.apache.activemq.console.Main.runTaskClass(Main.java:202)
   at org.apache.activemq.console.Main.main(Main.java:91)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]: Invocation of init method failed; nested exception is java.net.UnknownHostException: localhost
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1032)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:420)
   at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:245)
   at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:141)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:242)
   at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:156)
   at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:290)
   at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:348)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:161)
   at org.apache.xbean.spring.context.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:51)
   at org.apache.activemq.xbean.XBeanBrokerFactory.createBroker(XBeanBrokerFactory.java:41)
   at org.apache.activemq.broker.BrokerFactory.createBroker(BrokerFactory.java:57)
   at org.apache.activemq.console.command.StartCommand.startBroker(StartCommand.java:82)
   at org.apache.activemq.console.command.StartCommand.runTask(StartCommand.java:47)
   ...7 more
Caused by: java.net.UnknownHostException: localhost
   at java.net.ResolverCache.getHostByName(libgcj.so.7rh)
   at java.net.InetAddress.getAllByName(libgcj.so.7rh)
   at java.net.InetAddress.getByName(libgcj.so.7rh)
   at org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:76)
   at org.apache.activemq.transport.tcp.TcpTransportFactory.doBind(TcpTransportFactory.java:56)
   at org.apache.activemq.transport.TransportFactory.bind(TransportFactory.java:109)
   at org.apache.activemq.broker.TransportConnector.createTransportServer(TransportConnector.java:270)
   at org.apache.activemq.broker.TransportConnector.getServer(TransportConnector.java:122)
   at org.apache.activemq.broker.TransportConnector.start(TransportConnector.java:220)
   at org.apache.activemq.broker.BrokerService.startTransportConnector(BrokerService.java:1519)
   at org.apache.activemq.broker.BrokerService.startAllConnectors(BrokerService.java:1471)
   at org.apache.activemq.broker.BrokerService.start(BrokerService.java:402)
   at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:47)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1062)
   at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1029)
   ...20 more
INFO  BrokerService                  - ActiveMQ Message Broker (localhost, null) is shutting down
INFO  NetworkConnector               - Network Connector default-nc Stopped
INFO  TransportConnector             - Connector openwire Stopped
INFO  BrokerService                  - ActiveMQ JMS Message Broker (localhost, null) stopped


问题分析:

根据日志java.net.UnknownHostException: localhost判断,应该是由于服务器无法正确解析localhost造成的

[123@test conf]$ ping localhost
ping: unknown host localhost
[123@test conf]$ ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.020 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.026 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.023 ms

根据日志Error creating bean with name 'org.apache.activemq.xbean.XBeanBrokerService' defined in class path resource [activemq.xml]判断,应该是activemq.xml文件中的BrokerService配置出错

解决方式:

一:不使用localhost而使用127.0.0.1代替

二:修改主机映射

[root@test test]# vi /etc/hosts

在打开的文件中增加下面一行(保证新增的这条为以127.0.0.1开头的第一个):

127.0.0.1               localhost.localdomain localhost

出现如下测试结果说明配置成功:

[root@test test]# ping localhost
PING localhost.localdomain (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=1 ttl=64 time=0.019 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=2 ttl=64 time=0.020 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=3 ttl=64 time=0.024 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=4 ttl=64 time=0.020 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=5 ttl=64 time=0.018 ms

--- localhost.localdomain ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4009ms
rtt min/avg/max/mdev = 0.018/0.020/0.024/0.003 ms

此时可以在配置文件中使用localhost,服务器会将localhost解析为127.0.0.1

 

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