方式一：PC端与移动端使用同一个域名

server { 
    #默认访问PC端资源
    set $root 'web/pc/dist'; 
    
    #如果是移动端设备访问，访问移动端资源
    if ( $http_user_agent ~ "(MIDP)|(WAP)|(UP.Browser)|(Smartphone)|(Obigo)|(Mobile)|(AU.Browser)|(wxd.Mms)|(WxdB.Browser)|(CLDC)|(UP.Link)|(KM.Browser)|(UCWEB)|(SEMC-Browser)|(Mini)|(Symbian)|(Palm)|(Nokia)|(Panasonic)|(MOT-)|(SonyEricsson)|(NEC-)|(Alcatel)|(Ericsson)|(BENQ)|(BenQ)|(Amoisonic)|(Amoi-)|(Capitel)|(PHILIPS)|(SAMSUNG)|(Lenovo)|(Mitsu)|(Motorola)|(SHARP)|(WAPPER)|(LG-)|(LG/)|(EG900)|(CECT)|(Compal)|(kejian)|(Bird)|(BIRD)|(G900/V1.0)|(Arima)|(CTL)|(TDG)|(Daxian)|(DAXIAN)|(DBTEL)|(Eastcom)|(EASTCOM)|(PANTECH)|(Dopod)|(Haier)|(HAIER)|(KONKA)|(KEJIAN)|(LENOVO)|(Soutec)|(SOUTEC)|(SAGEM)|(SEC-)|(SED-)|(EMOL-)|(INNO55)|(ZTE)|(iPhone)|(Android)|(Windows CE)|(Wget)|(Java)|(curl)|(Opera)" ) 
    { 
        set $root 'web/mobile/dist'; 
    } 
    
    location / { 
        root $root; index index.html; 
        
        #解决刷新当前页面出现404 
        try_files $uri /index.html 
    } 
}

方式二：PC端使用主域名，移动端使用二级域名

#主域名配置信息 
server { 
    listen 80; 
    server_name www.xxx.com xxx.com; 
    location / { 
        index index.html;
        
        #默认访问PC端资源
        root 'web/pc/dist'; 
        
        try_files $uri /index.html; #解决刷新当前页面出现404 
    
        #如果是移动端设备访问，访问二级域名 
        if ( $http_user_agent ~ "(MIDP)|(WAP)|(UP.Browser)|(Smartphone)|(Obigo)|(Mobile)|(AU.Browser)|(wxd.Mms)|(WxdB.Browser)|(CLDC)|(UP.Link)|(KM.Browser)|(UCWEB)|(SEMC-Browser)|(Mini)|(Symbian)|(Palm)|(Nokia)|(Panasonic)|(MOT-)|(SonyEricsson)|(NEC-)|(Alcatel)|(Ericsson)|(BENQ)|(BenQ)|(Amoisonic)|(Amoi-)|(Capitel)|(PHILIPS)|(SAMSUNG)|(Lenovo)|(Mitsu)|(Motorola)|(SHARP)|(WAPPER)|(LG-)|(LG/)|(EG900)|(CECT)|(Compal)|(kejian)|(Bird)|(BIRD)|(G900/V1.0)|(Arima)|(CTL)|(TDG)|(Daxian)|(DAXIAN)|(DBTEL)|(Eastcom)|(EASTCOM)|(PANTECH)|(Dopod)|(Haier)|(HAIER)|(KONKA)|(KEJIAN)|(LENOVO)|(Soutec)|(SOUTEC)|(SAGEM)|(SEC-)|(SED-)|(EMOL-)|(INNO55)|(ZTE)|(iPhone)|(Android)|(Windows CE)|(Wget)|(Java)|(curl)|(Opera)" ) 
        { 
            rewrite ^/(.*)$ http://mobile.xxx.com/$1 permanent; 
        } 
    } 
} 

#二级域名配置信息 
server { 
    listen 80; 
    server_name mobile.xxx.com; 
    location /{ 
        index index.html index.htm; 
        root /home/socket/lxdt/lxsk_web_mobile/; 
        try_files $uri $uri/ /index.html; 
    } 
}