安装tomcat9服务报错

错误提示：

E:\Program Files (x86)\tomcat9\bin>service install tomcat9
Neither the Tomcat9.exe file nor the tomcat9.exe file was found…
Either the CATALINA_HOME environment variable is not defined correctly or
the incorrect service name has been used.
Both the CATALINA_HOME environment variable and the correct service name
are required to run this program.

解决办法：

• 设置系统环境变量
  
• 设置path属性
  
• 设置环境变量即时生效，进入 DOS 命令提示符，输入：set PATH=C: ，关闭 DOS 窗口。再次打开 DOS 窗口，输入：echo %PATH% ，可以发现 “我的电脑”->“属性”->“高级”->“环境变量” 中设置的 PATH 值已经生效。