upstream web{
  server localhost:8082;
}
upstream admin{
  server localhost:8083;
}
upstream finance{
  server localhost:8084;
}
server {
  listen    80;
  server_name finance.xxxx.com;
  #charset koi8-r;
  #access_log logs/host.access.log main;
  location / {
    proxy_pass http://finance;
    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;
  }
  #error_page 404       /404.html;
  # redirect server error pages to the static page /50x.html
  #
  error_page  500 502 503 504 /50x.html;
  location = /50x.html {
    root  html;
  }
}
server {
  listen    80;
  server_name www.xxx.com;
  #charset koi8-r;
  #access_log logs/host.access.log main;
  location / {
    proxy_pass http://web;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      
  }
  #error_page 404       /404.html;
  # redirect server error pages to the static page /50x.html
  #
  error_page  500 502 503 504 /50x.html;
  location = /50x.html {
    root  html;
  }
  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  #  proxy_pass  http://127.0.0.1;
  #}
  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  #  root      html;
  #  fastcgi_pass  127.0.0.1:9000;
  #  fastcgi_index index.php;
  #  fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  #  include    fastcgi_params;
  #}
  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  #  deny all;
  #}
}
server {
  server_name xxxx.com;
  rewrite ^(.*) http://www.xxxx.com$1 permanent;
}
server {
  listen    80;
  server_name admin.xxxx.com;
  #charset koi8-r;
  #access_log logs/host.access.log main;
  location / {
    proxy_pass http://admin;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      
  }
  #error_page 404       /404.html;
  # redirect server error pages to the static page /50x.html
  #
  error_page  500 502 503 504 /50x.html;
  location = /50x.html {
    root  html;
  }
  # proxy the PHP scripts to Apache listening on 127.0.0.1:80
  #
  #location ~ \.php$ {
  #  proxy_pass  http://127.0.0.1;
  #}
  # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
  #
  #location ~ \.php$ {
  #  root      html;
  #  fastcgi_pass  127.0.0.1:9000;
  #  fastcgi_index index.php;
  #  fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
  #  include    fastcgi_params;
  #}
  # deny access to .htaccess files, if Apache's document root
  # concurs with nginx's one
  #
  #location ~ /\.ht {
  #  deny all;
  #}
}

server {
   server_name xxxx.com;
   rewrite ^(.*) http://www.xxxx.com$1 permanent;
 }

<Host name="localhost" appBase="E:\tomcat\apache-tomcat-8.0.35-8082\webapps\web" deployOnStartup ="false" autoDeploy="false" unpackWARs="true">
       <Context path="/" docBase="E:\tomcat\apache-tomcat-8.0.35-8082\webapps\web" />
       <Valve  className="org.apache.catalina.valves.AccessLogValve" 
       directory="logs"   prefix="localhost_access_log"  suffix=".txt" 
       pattern="%h %l %u %t "%r" %s %b"  />
</Host>