apache 的http代理出错 502 Proxy Error

不久刚部署好的网站，忽然访问报错提示错误

<Location /buggyappserver/> ProxyPass http://buggyappserver:7001/foo/SetEnv force-proxy-request-1.0 1SetEnv proxy-nokeepalive 1</Location>

最后在我的httpd.conf的VirtualHost里加上了上面的两行设置

<VirtualHost *:80>    JkMount /hr/servlet/* worker1    JkMount /hr/*.jsp worker1    JkMount /hr/*.do worker1    ServerAdmin njgnini@163.com    ServerName www.iteye.com    ServerAlias www.iteye.com.cn    RewriteEngine On    RewriteRule ^/$　/hr/　[R,P] 　　　　　    SetEnv force-proxy-request-1.0.1 SetEnv proxy-nokeepalive 1?</VirtualHost> 

重启apache，在拿ie5.5访问O了