tomcat 6.0错误

q987654

　　一直都使用tomcat5.5，今天下载个tomcat6.0安装过程一路顺风..但启动后键入http://localhost:8080/ljay发现弹出404错误..立即到conf\web.xml文件看情况，发现

   <servlet>
        <servlet-name>default</servlet-name>
        <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
        <init-param>
            <param-name>listings</param-name>
            <param-value>false</param-value>
        </init-param>
    </servlet>


突然发现怎么变成falsh？立即把它修改问ture。重新启动没错误！ 一切正常

用了一段时间
突然之间有
401 Unauthorized
　　You are not authorized to viev this page.If you have not changed any configuration files,please examine the file conf/tomcat-users.xml in you installation. That file will wontain 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="admin" password="" roles="admin,manager"/>
　　晕，不知道为什么吧tomcat-users.xml文件搞乱..
　　立即修改好
　　<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
  <role rolename="manager"/>
  <role rolename="admin"/>
  <user username="admin" password="" roles="admin,manager"/>
</tomcat-users>
　　这样，tomcal6.0的基本问题解决！