1、Nginx的常用配置大家可以去搜一下，有很多優秀的博客，我這篇文章要實現的需求是：

　　a.根據訪問的域名不同，跳轉到不同的項目（html首頁，80端口）

　　b.攔截訪問中所有帶有api的請求，轉發到後端的不同服務器中（Tomcat項目，任意端口）

2、下面是Nginx的nginx.conf配置文件

user root root;
worker_processes  1;
#worker_cpu_affinity 1;
worker_rlimit_nofile 60000;
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs
 
/error.log  info;

pid        /var/run/nginx.pid;


events {
    use epoll;
    worker_connections  60000;
}


http {
    include mime.types;
    default_type application/octet-stream;
    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 50m;
    sendfile on;
    tcp_nopush on;
    keepalive_timeout 
 
120;
    server_tokens off;
    tcp_nodelay on;

    #ws
#        map $http_upgrade $connection_upgrade {
#        default upgrade;
#        ‘‘      close;
#    }
    fastcgi_connect_timeout 300;
    fastcgi_send_timeout 300;
     fastcgi_read_timeout 300;
    fastcgi_buffer_size 64k;
    fastcgi_buffers 4 64k;
    fastcgi_busy_buffers_size 128k;
    fastcgi_temp_file_write_size 128k;

    #Gzip Compression
    gzip on;
    gzip_buffers 
 
16 8k;
    gzip_comp_level 6;
    gzip_http_version 1.1;
    gzip_min_length 256;
    gzip_proxied any;
    gzip_vary on;
    gzip_types
        text/xml application/xml application/atom+xml application/rss+xml application/xhtml+xml image/svg+xml
        text/javascript application/javascript application/x-javascript
        text/x-json application/json application/x-web-app-manifest+json
        text/css text/plain text/x-component
        font/opentype application/x-font-ttf application/vnd.ms-fontobject
        image/x-icon;
    gzip_disable  "msie6";

    #If you have a lot of static files to serve through Nginx then caching of the files‘ metadata (not the actual files‘ contents) can save 
some latency.
    open_file_cache max=1000 inactive=20s;
    open_file_cache_valid 30s;
    open_file_cache_min_uses 2;
    open_file_cache_errors on;



        access_log off;
        include vhost/*.conf;
}

所有自定義的配置 都在vhost文件夾下面

3、現在貼出兩個vhost文件夾下面的自定義配置

server {
    listen 80;
    server_name dev.hr.static.baidu.com;

    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|flv|ico|js|css|html|woff2|woff)$ {
        root /deploy/www/baidu-www/web-hr;
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Headers X-Requested-With;
        add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
    }
}

server {
    listen 80;
    server_name dev.am.static.baidu.com;

    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|flv|ico|js|css|html|woff2|woff)$ {
        root /deploy/www/baidu-www/web-am;
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Headers X-Requested-With;
        add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
    }
}

這個是監聽80端口，註意server_name，這個服務名跟你訪問的host要一致才可以實現，如果你要進入到hr的首頁，那麽你在瀏覽器的輸入是dev.hr.static.baidu.com，這樣才能正常訪問到你指定的頁面

server {
        listen 80;
        server_name am.dev.baidu.com;
        access_log logs/am.baidu.com_nginx.log combined;
        index index.html index.jsp index.php;

location ^~ /api {
        proxy_pass  http://127.0.0.1:8081/;#需要代理的地址
        include proxy.conf;
        }

location ^~ / {
        root /deploy/www/baidu-www/web-am/;
        }
}

這個是需要轉發的後端服務，這個路徑後面可以帶項目名，同樣也需要註意server——name

nginx 做反向代理