在 Linux 安装 tomcat 环境，并解决访问manager 403

全文共两部分，安装tomcat和配置tomcat。

安装tomcat

1.首先安装好jdk

yum install java-1.8.0-openjdk.x86_64 --安装jdk1.8
java -version --检查jdk是否安装好

2.在官网下载apache-tomcat-7.0.107.tar.gz，并用ftp上传到服务器，并解压。解压好了即使安装好了。

tar -xvf apache-tomcat-7.0.107.tar.gz

3.验证是否安装成功A。切换到apache-tomcat-7.0.107/bin目录下，sh startup.sh，成功启动，如下图。

4.验证是否安装成功B。windows打开浏览器，输入http://服务器IP:8080/，成功打开tomcat主页，如下图，说明安装成功。

配置tomcat

此时，如果我们访问Server Status，会报错403。这需要我们完成以下两步配置：
1.修改配置文件apache-tomcat-7.0.107/conf/tomcat-users.xml。替换成以下内容：

<?xml version="1.0" encoding="UTF-8"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  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
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  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.
-->