同源策略引发的跨域问题它都能轻松解决！这到底是什么神奇的东西儿

version: '3.1'
services: 
 nginx:
  restart: always
  image: nginx
  container_name: nginx
  ports:
   - 80:80
  volumes:
   - ./conf/nginx.conf:/etc/nginx/nginx.conf	
   - ./wwwroot:/usr/share/nginx/wwwroot

events {
}

http {
	server{
	}

	server{
	}
}

user nginx;
worker_processes 1;

events {
	worker_connections 1024;
}

http{
	include				mime.type;
	default_type	application/octet-stream;

	sendfile			on;

	keepalive_timeout	65;
	
	server{
		listen 				80;
		server_name	admin.service.itoken.oxford.com
		# 所有的请求都是以 / 开始,所有的请求都可以匹配此location
		location / {
			root  /usr/local/docker/nginx/wwwroot/htmlservice;
			# 指定欢迎页面,按从左到右顺序查找
			index index.html index.htm;
		} 
	}

	server{
		listen 					80;
		server_name		admin.web.itoken.oxford.com

		location / {
			root /usr/share/nginx/wwwroot/htmlweb;
			index index.html index.htm;
		}
	}	
}

worker_processes 1;

events {
	worker_connections 1024;
}

http{
	include				mime.type;
	default_type	application/octet-stream;

	sendfile			on;

	keepalive_timeout	65;
	
	# 配置虚拟主机 192.168.32.255
	server{
		# 监听的IP和端口,配置192.168.32.255:80
		listen 				80;
		# 虚拟主机名称,这里配置IP地址
		server_name	192.168.32.255;
		# 所有的请求都是以 / 开始,所有的请求都可以匹配此location
		location / {
			# 使用 root 指令指定虚拟主机目录即网页存放目录
			# 例如:访问 http://ip/index.html 将找到 /usr/local/docker/nginx/wwwroot/html80/index.html
			# 例如:访问 http://ip/item/index.html 将找到 /usr/local/docker/nginx/wwwroot/html80/item/index.html
			root  /usr/share/nginx/wwwroot/html80;
			# 指定欢迎页面,按从左到右顺序查找
			index index.html index.htm;
		} 
	}

	# 配置虚拟主机 192.168.32.255
	server{
		listen 					8080;
		server_name		192.168.32.255;

		location / {
			root /usr/share/nginx/wwwroot/html8080;
			index index.html index.htm;
		}
	}
}

version: '3'
services:
 tomcat1:
  image: tomcat
  container_name: tomcat1
  ports:
   - 9090:8080
 tomcat2:
  image: tomcat
  container_name: tomcat2
  ports:
   - 9091:8080

user nginx;
worker_processes 1;

events {
	worker_connection	1024;
}

http {
	include				mime.type;
	default_type	application/octet-stream;

	sendfile 			on;

	keepalive_timeout	65;

	# 配置一个tomcat1代理服务器
	upstream tomcat_server1 { 
		server 192.168.32.255:9090;
	}

	# 配置一个tomcat2代理服务器
	upstream tomcat_server2{ 
		server 192.168.32.255:9091;
	}

	server {
		listen 		80;
		server_name	admin.service.itoken.oxford.com
		# 所有的请求都是以 / 开始,所有的请求都可以匹配此location
		location / {
			# 域名 admin.service.itoken.oxford.com的请求全部转发到tomcat_server1,即tomcat1服务器上
			proxy_pass http://tomcat_server1;
			# 欢迎页面,按照从左到右的顺序查找页面
			index index.jsp index.html index.htm;
		} 
	}

	server{
		listen 			80;
		server_name		admin.web.itoken.oxford.com

		location / {
			# 域名 admin.web.itoken.oxford.com的请求全部转发到tomcat_server2,即tomcat2服务器上
			proxy_pass http://tomcat_server2;
			index index.jsp index.html index.htm;
		}
	}	
}

user nginx;
worker_processes 1;

events {
	worker_connection	1024;
}

http {
	include				mime.type;
	default_type	application/octet-stream;

	sendfile 			on;

	keepalive_timeout	65;

	upstream myapp {
  		server 192.168.32.255:9090 weight=10;
  		server 192.168.32.255:9091 weight=10;
	}

	server{
		listen			80;
		server_name		nginx.oxford.com;
		location / {
			proxy_pass	http://myapp;
			index		index.jsp index.html index.htm;
		}
	}
}

add_header Access-Control-Allow-Origin *或域名;
add_header Access-Control-Allow-Headers X-Requested-with;
add_header Access-Control-Allow-Methods GET,POST,OPTIONS;

user nginx;
worker_processes 1;

events {
	worker_connection 1024;
}

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

	sendfile			on;

	keepalive_timeout 	65;

	server {
		listen			80;
		server_name		upload.myshop.com;
		add_header 'Access-Control-Allow-Origin' '*';
		add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-with,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range';
		location / {
			proxy_pass	http://192.168.32.255:8888;
			if($request_method = 'OPTIONS'){
				add_header Access-Control-Allow-Origin *;
				add_header Access-Control-Allow-Headers X-Requested-with;
				add_header Access-Control-Allow-Methods GET,POST,PUT,DELETE,PATCH,OPTIONS;
				# 解决假请求问题,如果是简单请求则没有这个问题,这里是上传文件,首次请求为OPTIONS方式,实际请求为POST方式
				add_header Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-with,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range;
				return 200;
			}
		}
	}
}