我无法登录Tomcat Manager App

从 结尾[tomcat-root] /logs/catalina.out ，我观察到您正在使用锁定的用户名 “ admin”

06-May-2014 16:47:41.828 WARNING [http-nio-192.168.0.51-8080-exec-6] org.apache.catalina.realm.LockOutRealm.authenticate An attempt was made to authenticate the locked user "admin"

您应该尝试使用更好的（不可猜测的）用户名。

<role rolename="manager-gui"/><user username="TomcatAdmin" password="secpa55wd" roles="manager-gui"/>

这绝对适合您。