摘自《AngularJS深度剖析与最佳实践》P132

nginx配置文件如下：

server {listen 80;server_name your.domain.name;location / {# 把跟路径下的请求转发给前端工具链（如gulp）打开的开发服务器# 如果是产品环境，则使用root等指令配置为静态文件服务器proxy_pass http://localhost:5000/;}location /api/ {# 把 /api 路径下的请求转发给真正的后端服务器proxy_pass http://localhost:8080/service/;# 把host头传过去，后端服务程序将收到your.domain.name, 否则收到的是localhost:8080proxy_set_header Host $http_host;# 把cookie中的path部分从/api替换成/serviceproxy_cookie_path /api /service;# 把cookie的path部分从localhost:8080替换成your.domain.nameproxy_cookie_domain localhost:8080 your.domain.name         }}

配置完成后重启nginx服务：

nginx -s reload

flying get√ 总是要拼了命继续努力

目前很多网站都是用前后端完全分离的模式实现，即：后端通过API提供数据，前端使用API获取数据并渲染。不过这样做会存在API跨域的问题，这里介绍一种通过Nginx配置解决跨域问题的方法。

Nginx整体配置如下：

upstream service {server 127.0.0.1:8080;
}
map $http_origin $cors_header {default "";"~^https?://localhost(:[0-9]+)?$" "$http_origin";
}server {listen 80;server_name 127.0.0.1;access_log /var/log/nginx/access.log;error_log /var/log/nginx/error.log;location = /favicon.ico { deny all; error_log off; access_log off; log_not_found off; }location /api/ {if ($request_method = 'OPTIONS') {add_header 'Content-Length' 0 always;add_header 'Content-Type' 'text/plain charset=UTF-8' always;add_header 'Access-Control-Allow-Origin' '$cors_header' always;add_header 'Access-Control-Allow-Credentials' 'true' always;add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;add_header 'Access-Control-Allow-Headers' 'Origin,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Accept,Cookie,Set-Cookie, X-AUTH-USER, X-AUTH-TOKEN' always;return 200;}if ($request_method = 'POST') {add_header 'Access-Control-Allow-Origin' '$cors_header' always;add_header 'Access-Control-Allow-Credentials' 'true' always;add_header 'Access-Control-Allow-Headers' 'Origin,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Accept,Cookie,Set-Cookie, X-AUTH-USER, X-AUTH-TOKEN' always;add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;}if ($request_method = 'GET') {add_header 'Access-Control-Allow-Origin' '$cors_header' always;add_header 'Access-Control-Allow-Credentials' 'true' always;add_header 'Access-Control-Allow-Headers' 'Origin,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Accept,Cookie,Set-Cookie, X-AUTH-USER, X-AUTH-TOKEN' always;add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;}uwsgi_pass service;include uwsgi_params;}
}

API路径配置中的 "X-AUTH-USER, X-AUTH-TOKEN"，是API中传递的自定义HEADER，需要在 "Access-Control-Allow-Headers"中指明。    其中，"map $http_origin $cors_header"将需要跨域的域名或者IP解析出来，方便后面的配置处理。