通过nginx子目录进行反向代理后，表单提交不起作用！

如何解决通过nginx子目录进行反向代理后，表单提交不起作用！

发现get_post函数不起作用，通过Nginx进行反向代理后。导致表单不起作用。有没有人遇到过？

#PROXY-START/
location ~* \.(PHP|jsp|cgi|asp|aspx)$
{
proxy_pass https://aaa.bbb.com;
proxy_set_header Host aaa.bbb.com;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header REMOTE-HOST $remote_addr;
}
location /
{
proxy_pass https://aaa.bbb.com/123456/;
proxy_set_header x-forwarded-host $host;
proxy_set_header x-forwarded-server aaa.bbb.com;
proxy_set_header Host aaa.bbb.com;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header REMOTE-HOST $remote_addr;

add_header X-Cache $upstream_cache_status;

#Set Nginx Cache

proxy_set_header Accept-Encoding "";
sub_filter "aaa.bbb.com/123456" "www.baidu.com";
sub_filter "aaa.bbb.com\/123456" "www.baidu.com";
sub_filter_once off;
    add_header Cache-Control no-cache;
expires 12h;
}

#PROXY-END/