转自：http://www.blogjava.net/apple0668/archive/2007/10/12/152383.html
一直用tomcat一段时间都正常无事，最近一次启动tomcat就发生以下异常：
严重: IOException while loading persisted sessions: java.io.EOFException
严重: Exception loading sessions from persistent storage
原因是tomcat对硬盘的session读取失败，彻底解决办法一下：将work下面的文件清空，主要是*.ser文件，或者只是删除掉session.ser即可以解决。
转自：https://community.jboss.org/wiki/VirtualHostsWithJBossAS
If you want to set up a virtual host for your web app, create or modify the WEB-INF/jboss-web.xml to contain the highlighted line as follows:
your-app.war/WEB-INF/jboss-web.xml
<jboss-web> <virtual-host>www.mycompany.com</virtual-host> <virtual-host>www.myothercompany.com</virtual-host><context-root>/</context-root> </jboss-web>
The following example shows a vhost configuration for the jmx-console.war for jboss-5.0.
<Server> <Service name="jboss.web"> <!-- A HTTP/1.1 Connector on port 8080 --> <Connector protocol="HTTP/1.1" port="8080" address="${jboss.bind.address}" connectionTimeout="20000" redirectPort="8443" ></Connector> <Engine name="jboss.web" defaultHost="localhost"> ... <Host name="localhost"> ... <Valve className="org.jboss.web.tomcat.service.jca.CachedConnectionValve" cachedConnectionManagerObjectName="jboss.jca:service=CachedConnectionManager" transactionManagerObjectName="jboss:service=TransactionManager" ></Valve> </Host> <Host name="loopback"> <Alias>loopback-120</Alias> <Valve className="org.jboss.web.tomcat.service.jca.CachedConnectionValve" cachedConnectionManagerObjectName="jboss.jca:service=CachedConnectionManager" transactionManagerObjectName="jboss:service=TransactionManager" ></Valve> </Host> </Engine> </Service> </Server>
<jboss-web> <!-- Uncomment the security-domain to enable security. You will need to edit the htmladaptor login configuration to setup the login modules used to authentication users. <security-domain>java:/jaas/jmx-console</security-domain> --> <virtual-host>loopback</virtual-host> </jboss-web>