修改tomcat用户名和密码的方法详解

我们可以通过图形用户界面来管理tomcat，启动tomcat，在地址栏中输入：

http://localhost:8080  

就可以看见tomcat的欢迎页面，点击左边的tomcat manager  就会出现一个对话框，需要输入用户名和密码，当忘记最开始安装tomcat时的用户名和密码时，我们可以通过以下方杰来解决： 

修改tomcat-users.xml文件，这个文件在tomcat的安装目录下的conf目录下，打开这个文件，我们可以看到如下信息：

<tomcat-users>  
<!–  
  NOTE:  By default, no user is included in the “manager-gui” role required  
  to operate the “/manager/html” web application.  If you wish to use this app,  
  you must define such a user - the username and password are arbitrary.  
–>  
<!–  
  NOTE:  The sample user and role entries below are wrapped in a comment  
  and thus are ignored when reading this file. Do not forget to remove  
  <!.. ..> that surrounds them.  
–>  
<!–  
  <role rolename=“tomcat”/>  
  <role rolename=“role1″/>  
  <user username=“tomcat” password=“tomcat” roles=“tomcat”/>  
  <user username=“both” password=“tomcat” roles=“tomcat,role1″/>  
  <user username=“role1″ password=“tomcat” roles=“role1″/>  
–>  
</tomcat-users>  
我们在这里加上如下的一句话：
<user username=“admin” password=“admin” roles=“admin,manager”/>  
修改后的文件为：
<tomcat-users>  
<!–  
  NOTE:  By default, no user is included in the “manager-gui” role required  
  to operate the “/manager/html” web application.  If you wish to use this app,  
  you must define such a user - the username and password are arbitrary.  
–>  
<!–  
  NOTE:  The sample user and role entries below are wrapped in a comment  
  and thus are ignored when reading this file. Do not forget to remove  
  <!.. ..> that surrounds them.  
–>  
<!–  
  <role rolename=“tomcat”/>  
  <role rolename=“role1″/>  
  <user username=“tomcat” password=“tomcat” roles=“tomcat”/>  
  <user username=“both” password=“tomcat” roles=“tomcat,role1″/>  
  <user username=“role1″ password=“tomcat” roles=“role1″/>  
–>  
  <user username=“admin” password=“admin” roles=“admin,manager”/>  
</tomcat-users>  

重新启动tomcat服务器，这时，我们就可以使用用户名为admin，密码为admin的用户登录tomcat的管理界面了，这样，我们可以远程管理tomcat了