Linux服务器中tomcat manager无法登录

修改了tomcat-user.xml如下所示：
<?xml version='1.0' encoding='utf-8'?>
<tomcat-users>
<role rolename="tomcat"/>
<role rolename="role1"/>
<role rolename="manager"/>
<role rolename="admin"/>
<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="manager"/>
</tomcat-users> 

但是tomcat manager还是无法登录，请问如何解决？

你重启 tomcat 了没?