场景：www.xxx.com网站添加子路径，分别指向不同项目，如www.xxx.com/project1 、www.xxx.com/project2

1、项目打包时补充publicPath，指定js和css等资源的路径前缀为project1或者project2
https://www.webpackjs.com/guides/public-path/

2、子项目所在nginx配置location

location /project1/ {
   alias html/project1;    #编译后代码路径
   index index.html index.htm;
}

location /project2/ {
   alias html/project2;
   index index.html index.htm;
}

3、公网nginx配置location

location /project1/ {
   proxy_pass http://127.0.0.1:80/project1/;   #访问路径及端口
}

location /project2/ {
   proxy_pass http://127.0.0.1:80/project2/;   #访问路径及端口
}

location ~* /(project2|project2)/.*\.(gif|jpg|jpeg|bmp|png|js|css)${
   proxy_pass http://127.0.0.1:80；#访问路径及端口
}