由于项目需要，前端的js无法跨域，所以用了nginx来反向代理，由于都是在本地安装测试，我是windows系统。nginx监听80，apache监听8080，本地hosts 127.0.0.1 mychain.com

nginx 配置如下

upstream mychain.com 
{
    server 127.0.0.1:8080;
}
server 
{
    listen       80;
    server_name  mychain.com;     
    location / 
    {
        proxy_pass      http://mychain.com;
        proxy_redirect          off;
        proxy_set_header         Host $proxy_host;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header         X-Scheme $scheme;
    }
}    

apache 配置如下

<VirtualHost *:8080>
    ServerName mychain.com 
    ServerAlias *.mychain.com
    DocumentRoot c:/www/chain/public
    <Directory  "c:/www/chain/public">
        Options +Indexes +Includes +FollowSymLinks +MultiViews
        AllowOverride All
        Allow from all
    </Directory>
</VirtualHost>

可是每次访问mychain.com的时候url都会自动跳转到localhost:8080
请问如何不让url跳转？