现在我在工作上还有一个问题。我已经调整了配置，现在，根据url，请求应该被转发到后端的3个Tomcat。
如果url是www.mysite.com，那么请求应该转发到tomcat 1，依此类推。
当然，它们是virtualhost中的虚拟网站，或者至少我的服务器应该这么认为。然而，它不是这样工作的。如果我访问mysite.com，正如预期的那样，实际上会调用mysite.com，而不是将请求转发给Tomcat1。
当我调用localhost时，会直接显示tomcat的起始页，这实际上应该是localhost:8181的起始页。可以通过/app1..3联系Tomcat。所以这不是问题所在。
问题是：为了实现我的目标，我到底需要改变什么，在哪里改变？
httpd.conf

Listen 80       
NameVirtualHost *:80

<VirtualHost *:80>
        ServerName www.mysite.com
        RewriteEngine on
        RewriteRule ^/(.*)$/app1/$1 [l,PT]
        JkMount /* tomcat1
</VirtualHost>

<VirtualHost *:80>
        ServerName www.test.de
        RewriteEngine on
        RewriteRule ^/(.*)$/app2/$1 [l,PT]
        JkMount /* tomcat2
</VirtualHost>

<VirtualHost *:80>
        ServerName www.example.de
        RewriteEngine on
        RewriteRule ^/(.*)$/app3/$1 [l,PT]
        JkMount /* tomcat3
</VirtualHost>

“httpd-s”的输出

AH00548: NameVirtualHost has no effect and will be removed in the next release /etc/httpd/conf/httpd.conf:48
AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message
VirtualHost configuration:

* :80                   is a NameVirtualHost

         default server www.mysite.com (/etc/httpd/conf/httpd.conf:50)
         port 80 namevhost www.mysite.com (/etc/httpd/conf/httpd.conf:50)
         port 80 namevhost www.test.de (/etc/httpd/conf/httpd.conf:57)
         port 80 namevhost www.example.de (/etc/httpd/conf/httpd.conf:64)
ServerRoot: "/etc/httpd"
Main DocumentRoot: "/var/www/html"
Main ErrorLog: "/etc/httpd/logs/error_log"
Mutex lua-ivm-shm: using_defaults
Mutex proxy: using_defaults
Mutex authn-socache: using_defaults
Mutex default: dir="/etc/httpd/run/" mechanism=default 
Mutex cache-socache: using_defaults
Mutex authdigest-opaque: using_defaults
Mutex watchdog-callback: using_defaults
Mutex proxy-balancer-shm: using_defaults
Mutex rewrite-map: using_defaults
Mutex authdigest-client: using_defaults
PidFile: "/etc/httpd/run/httpd.pid"
Define: DUMP_VHOSTS
Define: DUMP_RUN_CFG
User: name="apache" id=48
Group: name="apache" id=48