Tomcat404錯誤：All URLs used to access the Manager application should now start with one of the followi

環境：

IDE：idea 2017.02

server：Tomcat 9.0.6

框架：ssm + redis

錯誤現象：

ssm框架下，request的映射路徑沒有問題，控制檯也沒有拋出異常，主頁能正常打開，可是不能跳轉到Controller的路徑，

報瞭如下錯誤：

The page you tried to access (/manager/text/sessions) does not exist.

The Manager application has been re-structured for Tomcat 7 onwards and some of URLs have changed. All URLs used to access the Manager application should now start with one of the following options:

/manager/html for the HTML GUI
/manager/text for the text interface
/manager/jmxproxy for the JMX proxy
/manager/status for the status pages
Note that the URL for the text interface has changed from "/manager" to "/manager/text".

You probably need to adjust the URL you are using to access the Manager application. However, there is always a chance you have found a bug in the Manager application. If you are sure you have found a bug, and that the bug has not already been reported, please report it to the Apache Tomcat team.

Tomcat找不到頁面，Manager Application在Tomcat7中作了更新，全部訪問Manager Application的URL必須如下列之一開頭，訪問的URL不正確，致使找不到頁面。

緣由猜想：

網上查了一下，只找到一個帖子：https://stackoverflow.com/questions/36462764/accessing-tomcat-manager-throws-404

他給瞭解決方法，在Tomcat路徑下找到配置文件，context.xml，增長一句：

<!-- The contents of this file will be loaded for each web application -->
<Context privileged="true">

    <!-- Default set of monitored resources. If one of these changes, the    -->
    <!-- web application will be reloaded.

加上一句<Context privileged="true">，說是Tomcat權限問題，沒仔細研究過，直接改了配置文件，可是沒有用。

個人解決方法和一點猜測：

看日誌的信息表達的意思多是由於/manager....是訪問Tomcat內部的配置的路徑？我看到以前那我的的訪問路徑也有/manager..，好比http://localhost:8080/manager/html....是訪問Tomcat的某個管理項的，其餘相似，至關於manager在路徑裏是不能用的。

因而我改了Controller類裏映射路徑，把@RequestMapping("/manager")裏的"/manager"換成其餘字符串，

而後從新啓動Tomcat就能正常訪問了。