1、思路：根據不同的URL去跳轉到不同的系統中

2、分析：

$request_uri代表的是URL地址除去“http://域名”字串以後剩下的字串，例如：URL地址為：

，則$request_uri代表的是itoo-basic-majorchoosecourse-web/settingMajorCourse這個字串。

根據if判斷語句進入到不同系統。

$request_uri ~ "^\/itoo-basic"：開頭是”/itoo-basic”的進入basic_server。

$request_uri ~"^\/itoo-authority"：開頭是”/itoo- authority”的進入authority _server。

3、配置

如果再新增一個系統，只要在nginx.conf配置檔案中再新增upstream和if語句，例如再新增一個新生，則可以寫：

upstream freshmen _server {

         server ip：埠

}

if ( $request_uri ~ "^\/ itoo-freshmen" )

{

         proxy_pass   http:// freshmen _server;

}

完整的反向代理的配置檔案：

nginx.conf

user  nginx;
worker_processes  1;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

     source_charset GB2312;
     server_names_hash_bucket_size 256;
     client_header_buffer_size 256k;
     large_client_header_buffers 4 256k;

     #size limits
     client_max_body_size             50m;
     client_body_buffer_size        256k;
     client_header_timeout     3m;
     client_body_timeout 3m;
     send_timeout             3m;
	#引數都有所調整.目的是解決代理過程中出現的一些502 499錯誤     
     sendfile on;
     tcp_nopush         on;
     keepalive_timeout 120; #引數加大,以解決做代理時502錯誤
     tcp_nodelay on;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
    include  /etc/nginx/upstream.conf;
    include  /etc/nginx/server.conf; 
}
 

    upstream tomcat_server {
		server IP地址:埠;
	
    }
    
    upstream authority_server {
        server IP地址：埠;
	
    }

server
     {
            listen             8088;
            server_name    192.168.22.160;
            charset GB2312;
            index index.html index.htm;
            root    /date/wwwroot/linuxtone/;

                location ~ ^/NginxStatus/ {
                        stub_status on;
                        access_log off;
                 }

         location / {
             root    /date/wwwroot/linuxtone/;
             proxy_redirect off ;
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header REMOTE-HOST $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             client_max_body_size 50m;
             client_body_buffer_size 256k;
             proxy_connect_timeout 30;
             proxy_send_timeout 30;
             proxy_read_timeout 60;
             proxy_buffer_size 256k;
             proxy_buffers 4 256k;
             proxy_busy_buffers_size 256k;
             proxy_temp_file_write_size 256k;
             proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
             proxy_max_temp_file_size 128m;
		
			if ( $request_uri ~ "^\/itoo-basic" )
			{
				proxy_pass   http://tomcat_server;
			}

			if ( $request_uri ~ "^\/itoo-authority" )
			{
				proxy_pass   http://authority_server;
			}
             
            }
			
	#Add expires header for static content
     location ~* \.(jpg|jpeg|gif|png|swf)$ {
         if (-f $request_filename) {
             root /date/wwwroot/linuxtone/;
             expires            1d;
             break;
            }
     }
    
}
 

4、其它辦法

         有一種思路，nginx的rewrite功能，感覺它能實現，正在研究中。