我在访问本地主机上的tomcat管理器应用程序时遇到问题。当我将tomcat安装到我的Mac时，它没有要求设置用户名或密码（就像在Windows上一样）。但是，如果我尝试登录到管理器应用程序，则需要它们。
到目前为止我尝试过：
1）我从tomcat用户那里获取了用户名和密码.xml并尝试登录
<tomcat-users xmlns="http://tomcat.apache.org/xml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
version="1.0">
<!--
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>2）然后我取消了角色和用户标签（默认情况下它们是评论的）并尝试登录
<tomcat-users xmlns="http://tomcat.apache.org/xml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
version="1.0">
<!--
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>3）然后我在xml中添加了一些额外的行，这些行 https://wiki.apache.org/tomcat/TomcatOnMacOS 步骤3下描述并尝试登录
<tomcat-users xmlns="http://tomcat.apache.org/xml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
version="1.0">
<!--
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"/>
<role rolename="manager"/>
<role rolename="admin"/>
<user username="tomcat" password="tomcat" roles="tomcat,admin,manager"/>
<user username="both" password="tomcat" roles="tomcat,role1"/>
<user username="role1" password="tomcat" roles="role1"/>
</tomcat-users>但到目前为止，没有任何帮助。有什么建议可以解决这个问题吗？
如果您在弹出的基本身份验证上按取消，它应该列出您缺少/需要的角色。
我的雄猫 8 有这个配置：
<role rolename="manager-gui"/>
<role rolename="admin-gui"/>
<role rolename="manager-script"/>
<user username="admin" password="password" roles="manager-gui,admin-gui,manager-script"/>
自从我积极和自愿地使用管理器应用程序以来已经有一段时间了，但有两个常见的警告。一个写在您在问题中复制的片段中
<!--
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.
-->例如，您可能需要一个经理 GUI 角色。但是，由于我禁欲使用此应用程序，我不能 100% 确定确实如此，manager可能就足够了。
另一个常见问题是您没有提到的：tomcat-users.xml只会在启动时读取一次。如果在 tomcat 运行时更改它，则需要重新启动 tomcat 才能获取更改 - 或者配置使用适当数据库的其他领域。tomcat-users.xml只是一个快速而肮脏的领域实现，恕我直言，这对于生产用途并不好（除非这样的限制对你来说很好）。
尝试设置经理 GUI 角色。这将起作用
<?xml version="1.0" encoding="UTF-8"?>
<!--
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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
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http://www.apache.org/licenses/LICENSE-2.0
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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 xmlns="http://tomcat.apache.org/xml"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://tomcat.apache.org/xml tomcat-users.xsd"
version="1.0">
<role rolename="tomcat"/>
<role rolename="manager-gui"/>
<user username="tomcat" password="password1" roles="tomcat, manager-gui"/>
</tomcat-users>