ajax跨域之nginx反向代理

只需在nginx.conf中添加三行代码

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

如果不做反向代理，在响应头中加入跨域允许，以PHP为例

header('content-type:application:json;charset=utf8');  
header('Access-Control-Allow-Origin:*');  
header('Access-Control-Allow-Methods:POST');  
header('Access-Control-Allow-Headers:x-requested-with,content-type');