之前在文章Win7系统64位环境下使用Apache——Apache2.4整合Tomcat与mod_jk提到了安装Apache2.4时有可能报错：
Invalid command ‘Order‘, perhaps misspelled or defined by a module not included
in the server configuration这里单独说一下。
安装Apache2.4的时候，有时候会修改文件：
${Apache2.4}/conf/extra/httpd-vhosts.conf
在里面添加一些内容，比如：
<VirtualHost *:80>
ServerName one.test.com
JkMount /* one
ErrorLog "logs/one-error_log"
CustomLog "logs/one-access_log" common
</VirtualHost>
<VirtualHost *:80>
ServerName two.test.com
JkMount /* two
ErrorLog "logs/two-error_log"
CustomLog "logs/two-access_log" common
</VirtualHost>
<VirtualHost *:80>
DocumentRoot "D:\apache-tomcat-6.0.51-file"
ServerName file.test.com
ErrorLog logs/file-error_log
CustomLog logs/file-access_log combined
<Directory "D:\apache-tomcat-6.0.51-file">
Require all granted
</Directory>
</VirtualHost>如图：
这里只注意第6部分，里面的：
Require all granted表示允许全部权限，这在Apache2.2版本中是以：
Order allow,deny
Allow from all的方式来授权的。如果在Apache2.4中也标记成了Apache2.2的形式，就会报错：
Invalid command ‘Order‘, perhaps misspelled or defined by a module not included
in the server configuration如图：
所以这里要注意在Apache2.4的安装中，如果要在文件：
${Apache2.4}/conf/extra/httpd-vhosts.conf
中添加授权所有权限的命令，要使用：
Require all granted而不是：
Order allow,deny
Allow from all同意的道理，如果是禁止所有权限要使用：
Require all denied而不是：
Order deny,allow
Deny from all这里参考了：
http://systembash.com/apache-2-4-upgrade-and-the-invalid-command-order-error/
与