我有两个版本的Angular WebApp运行在两个不同的服务器上（prod和dev）。prod版本在www.example.com上exemple.com，dev版本在www.example.com上exemple.com/dev。但是，当我设置代理加载dev版本时，只加载index.html文件，不加载JS和CSS。当我在devtools中检查请求URL时，我看到index.html来自https://exemple.com/dev，而main.bundle.js来自https://exemple.com/。
下面是prod服务器的nginx.conf：

server {
        listen       80 default_server;
        #listen       [::]:80 default_server;
        server_name  _;
        root         /site/app;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location /api/ {
                proxy_pass http://127.0.0.1:3000/api/;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
                add_header 'Access-Control-Allow-Origin' '*' always;
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
                add_header 'Access-Control-Allow-Headers' 'Origin, X-Requested-With, Content-Type, Accept, authorization' always;
                add_header 'Access-Control-Allow-Credentials' 'true' always;
        }

        location /dev {
                proxy_pass http://10.10.38.18/;
                proxy_http_version 1.1;
                proxy_cache_bypass $http_upgrade;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
        }

这里是dev服务器：

server {
        listen       80 default_server;
        #listen       [::]:80 default_server;
        server_name  _;
        root         /site/webApp;

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        location / {
                autoindex on;
        }
        location /api/ {
                proxy_pass http://127.0.0.1:3000/api/;
                proxy_http_version 1.1;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection 'upgrade';
                proxy_set_header Host $host;
                proxy_cache_bypass $http_upgrade;
                add_header 'Access-Control-Allow-Origin' '*' always;
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
                add_header 'Access-Control-Allow-Headers' 'Origin, X-Requested-With, Content-Type, Accept, authorization' always;
                add_header 'Access-Control-Allow-Credentials' 'true' always;
        }