nginx 解决跨域问题

解决跨域问题：

在location段添加如下内容：

　　if ($request_method = 'OPTIONS') {

   　　add_header 'Access-Control-Allow-Origin' '*';

　　   add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';

　　　# # Custom headers and headers various browsers *should* be OK with but aren't

        add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';

       # # Tell client that this pre-flight info is valid for 20 days

       add_header 'Access-Control-Max-Age' 1728000; add_header 'Content-Type' 'text/plain charset=UTF-8';

       add_header 'Content-Length' 0;

       return 204; }

   if ($request_method = 'POST') {

     add_header 'Access-Control-Allow-Origin' '*';

     add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';

     add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; }

  if ($request_method = 'GET') {

     add_header 'Access-Control-Allow-Origin' '*';

     add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';

     add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type'; }