nginx跨域设置无效的解决办法 Nginx跨域设置Access-Control-Allow-Origin无效的解决办法

一：问题：Nginx跨域设置后并没有解决问题

使用大家说的以下配置，验证无效，跨域问题仍然存在：

add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET,POST';

二：解决问题：使用以下配置，生效

if ($request_method = 'OPTIONS') {
	add_header 'Access-Control-Allow-Origin' '*';
	add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
	add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
	add_header 'Access-Control-Max-Age' 1728000;
	add_header 'Content-Type' 'text/plain charset=UTF-8';
	add_header 'Content-Length' 0;
	return 204;
}
if ($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';
}

三：总结

nginx的全局跨域配置无法生效时，最好的解决办法就是针对每个不同的请求方式给加上独有的跨域处理！！！