Tomcat8訪問管理頁面localhost出現：403 Access Denied

403 Access Denied

You are not authorized to view this page.

If you have already configured the Manager application to allow access and you have used your browsers back button, used a saved book-mark or similar then you may have triggered the cross-site request forgery (CSRF) protection that has been enabled for the HTML interface of the Manager application. You will need to reset this protection by returning to the main Manager page. Once you return to this page, you will be able to continue using the Manager appliction’s HTML interface normally. If you continue to see this access denied message, check that you have the necessary permissions to access this application.

If you have not changed any configuration files, please examine the file conf/tomcat-users.xml in your installation. That file must contain the credentials to let you use this webapp.

For example, to add the manager-gui role to a user named tomcat with a password of s3cret, add the following to the config file listed above.

Note that for Tomcat 7 onwards, the roles required to use the manager application were changed from the single manager role to the following four roles. You will need to assign the role(s) required for the functionality you wish to access.

manager-gui - allows access to the HTML GUI and the status pages manager-script - allows access to the text interface and the status pages manager-jmx - allows access to the JMX proxy and the status pages manager-status - allows access to the status pages only The HTML interface is protected against CSRF but the text and JMX interfaces are not. To maintain the CSRF protection:

Users with the manager-gui role should not be granted either the manager-script or manager-jmx roles. If the text or jmx interfaces are accessed through a browser (e.g. for testing since these interfaces are intended for tools not humans) then the browser must be closed afterwards to terminate the session.

通常遇到此問題的解決方案是： vi /usr/local/tomcat/apache-tomcat-8.5.9/conf/tomcat-users.xml 在此文件中添加用戶和角色：

[root@Dasoncheng2 bin]# vim /usr/local/tomcat/conf/tomcat-users.xml    ##倒數第二行添加
……
<role rolename="admin"/>
<role rolename="admin-gui"/>
<role rolename="admin-script"/>
<role rolename="manager"/>
<role rolename="manager-gui"/>
<role rolename="manager-script"/>
<role rolename="manager-jmx"/>
<role rolename="manager-status"/>
<user name="admin" password="tomcat" roles="admin,manager,admin-gui,admin-script,manager-gui,manager-script,manager-jmx,manager-status" />
</tomcat-users>

可是tomcat8.5 更改以後，仍然訪問拒絕。

還需步驟以下： vi /usr/local/tomcat/apache-tomcat-8.5.9/webapps/manager/META-INF/context.xml

[root@Dasoncheng2 bin]# vim /usr/local/tomcat/webapps/manager/META-INF/context.xml 
……
<Context antiResourceLocking="false" privileged="true" >
  <Valve className="org.apache.catalina.valves.RemoteAddrValve"
         allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1|192.168.60.*" />  ##這裏添加你的ip或網段，能夠使用正則；再就是我發現使用192.168.60.0/24這樣的方式沒法訪問！
  <Manager sessionAttributeValueClassNameFilter="java\.lang\.(?:Boolean|Integer|Long|Number|String)|org\.apache\.catalina\.filters\.CsrfPreventionFilter\$LruCache(?:\$1)?|java\.util\.(?:Linked)?HashMap"/>
</Context>

備註：本人開始加上本身本機的ip地址，仍然訪問不了。看到有帖子說明能夠將 Valve className=」org.apache.catalina.valves.RemoteAddrValve」 allow=」127.\d+.\d+.\d+|::1|0:0:0:0:0:0:0:1」 /> 註解掉。

[root@Dasoncheng2 bin]# vim /usr/local/tomcat/webapps/manager/META-INF/context.xml 
……
<Context antiResourceLocking="false" privileged="true" >
  <!Valve className="org.apache.catalina.valves.RemoteAddrValve"
         allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1|192.168.60.*" />
  <Manager sessionAttributeValueClassNameFilter="java\.lang\.(?:Boolean|Integer|Long|Number|String)|org\.apache\.catalina\.filters\.CsrfPreventionFilter\$LruCache(?:\$1)?|java\.util\.(?:Linked)?HashMap"/>
</Context>

以後再訪問http://192.168.5.106:8080/

我以爲這樣註釋掉就有一點不安全了，全部ip均可以訪問 並且沒有帳號密碼（上面添加用戶和角色不就沒用了）？？