求教 nginx 同一域名配置多端

[kestrelBright]

server
    {
        listen 80;
        server_name www.xxx.cc;

        set $base_path "/xxx/xxx";

        root "${base_path}/vue/dist";

        index index.html;
        
        location / {
            try_files $uri $uri/ /index.html$is_args$args;

            if (!-f $request_filename) {
                 proxy_pass http://www.xxx1.cc;
            }
        }

        location  /bb/ {
            alias   "${base_path}/vue1/dist/";
            index  index.html index.htm;
            try_files $uri $uri/ /index.html$is_args$args;
        }

        location /bbapi/ {
            proxy_pass http://127.0.0.1:8095/;
        }
    }

现在必须是 www.xxx.cc/index.html 才能访问，try_files 没生效，想默认走前端，前端找不到就代理到后端。如果去掉 if ，try_files 有效，但后端访问不能有前缀。该怎么改？

还有如果加上 upstream

upstream xxx_server_name{
    server http://www.xxx1.cc;
 }
 server
    {
        listen 80;
        server_name www.xxx.cc;

        set $base_path "/xxx/xxx";

        root "${base_path}/vue/dist";

        index index.html;
        
        location / {
            try_files $uri $uri/ /index.html$is_args$args;

            if (!-f $request_filename) {
                 proxy_pass http:/xxx_server_name;
            }
        }

        location  /bb/ {
            alias   "${base_path}/vue1/dist/";
            index  index.html index.htm;
            try_files $uri $uri/ /index.html$is_args$args;
        }

        location /bbapi/ {
            proxy_pass http://127.0.0.1:8095/;
        }
    }

这样改了就代理就不到后端去了，求教大佬们

[kestrelBright]

想要去掉 index.html

[putyy]

location /api/ {
proxy_http_version 1.1;
proxy_set_header Connection "keep-alive";
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
if (!-f $request_filename) {
proxy_pass http://127.0.0.1:8801;
}
}

location / {
index index.html index.htm;
try_files $uri $uri/ /index.html;
}


这是我惯用的配置，通常通过前缀标识 api, 其他的默认走前端

[kestrelBright]

@putyy 本想不用前缀，搞了半天没办法