tomcat问题配置完管理员后无法登陆

配置完了 启动服务器 
进入http://localhost:8080/ 
点击Tomcat Manager 

账号密码输入admin 
进不去是怎么回事 
从来没遇到过 
愁 

下面是配置文件tomcat-users.xml 
请教高手 

<?xml version='1.0' encoding='utf-8'?> 
<!-- 
  Licensed to the Apache Software Foundation (ASF) under one or more 
  contributor license agreements.  See the NOTICE file distributed with 
  this work for additional information regarding copyright ownership. 
  The ASF licenses this file to You under the Apache License, Version 2.0 
  (the "License"); you may not use this file except in compliance with 
  the License.  You may obtain a copy of the License at 

      http://www.apache.org/licenses/LICENSE-2.0 

  Unless required by applicable law or agreed to in writing, software 
  distributed under the License is distributed on an "AS IS" BASIS, 
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
  See the License for the specific language governing permissions and 
  limitations under the License. 
--> 
<tomcat-users> 
<!-- 
  <role rolename="tomcat"/> 
  <role rolename="role1"/> 
  <role rolename="manager"/> 
  <user username="admin" password="admin" roles="manager"/> 
  <user username="tomcat" password="tomcat" roles="tomcat"/> 
  <user username="both" password="tomcat" roles="tomcat,role1"/> 
  <user username="role1" password="tomcat" roles="role1"/> 
--> 
</tomcat-users>
tomcat问题 配置完管理员后 无法登陆

tomcat问题配置完管理员后无法登陆
