创建WEB-INF/jboss-web.xml文件，全部内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web>
<context-root>/</context-root>
</jboss-web>修改/jboss-as-7.0.0.Final/standalone/configuration/standalone.xml文件
在文件的最后找到
<subsystem xmlns="urn:jboss:domain:web:1.0" default-virtual-server="default-host">
<connector name="http" scheme="http" protocol="HTTP/1.1" socket-binding="http"/>
<virtual-server name="default-host" enable-welcome-root="true">
<alias name="localhost" />
<alias name="example.com" />
</virtual-server>
</subsystem> 将enable-welcome-root="true"删除或改为enable-welcome-root="false"
否则启动时会抛出"Child container with name already exists"错误
转自:http://exceedsun218.iteye.com/blog/1150927
