400错误 request header or cookie too large 修改nginx.conf 增加缓冲区

http
{
include mime.types;
default_type application/octet-stream;
source_charset GB2312;
server_names_hash_bucket_size 256;
client_header_buffer_size 8k;#默认是4k
large_client_header_buffers 4 8k;

......

}