今天嘗試在阿里云服務器中的tomcat部署項目

點擊manager App 時頁面顯示這樣，根據上圖提示可知原因是cont/tomcat-users.xml 未配置用戶名和密碼， 所以需要將下面這段配置用戶名和密碼的代碼添加到tomcat-users.xml中

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

保存后重啟tomcat，再點擊manage app 后提示輸入
賬號：tomcat
密碼：tomcat 即可打開網址

若出現了403問題，則是因為訪問受限了

403 Access DeniedYou are not authorized to view this page.By default the Manager is only accessible from a browser running on the same machine as Tomcat. If you wish to modify this restriction, you'll need to edit the Manager's context.xml file.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 application'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

這時候需要修改
/webapps/manager/META_INF/context.xml文件，將文件中對訪問的來源受限設置注釋:

<Context antiResourceLocking="false" privileged="true" ><!--注釋這里，去除對訪問權限的設置<Valve className="org.apache.catalina.valves.RemoteAddrValve"allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />--> </Context>

修改后再重新點擊Manage App 即可打開管理界面

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