Tomcat6.0.18 部署时无法访问管理界面401 Unauthorized

错误提示信息：401 Unauthorized

You are not authorized to view this page. If you have not changed any configuration files, please examine the file conf/tomcat-users.xml in your installation. That file will contain the credentials to let you use this webapp.

You will need to add manager role to the config file listed above. For example:

<role rolename="manager"/>
<user username="tomcat" password="s3cret" roles="manager"/>

For more information - please see the Manager App HOW-TO.

解决方法：

tomcat-users.xml 文件内容：

<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
  <role rolename="manager"/>
  <user username="admin" password="admin" roles="manager"/>
</tomcat-users>


context.xml      文件中内容：

<Context>
    <WatchedResource>WEB-INF/web.xml</WatchedResource>   
    <Manager pathname="/manager" debug="0"  privileged="true" docBase="/home/oracle/tomcat/apache-tomcat-6.0.18/webapps/manager" />   
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" /> 

</Context>