nginx记录日志时记录服务器响应的内容

目前的 nginx 是不支持输出 response 报文体的 使用body_filter_by_lua来分配请求报文体给一个nginx变量。下面是一个示例

worker_processes 1;
error_log logs/error.log;
events {
 worker_connections 1024;
}
http {
 log_format log_req_resp '$remote_addr - $remote_user [$time_local] '
 '"$request"$status $body_bytes_sent '
 '"$http_referer""$http_user_agent"$request_time req_body:"$request_body"resp_body:"$resp_body"';

 server {
 listen 8082;
 access_log logs/access.log log_req_resp;

 lua_need_request_body on;

 set $resp_body"";
 body_filter_by_lua '
 local resp_body = string.sub(ngx.arg[1], 1, 1000)
 ngx.ctx.buffered = (ngx.ctx.buffered or"") .. resp_body
 if ngx.arg[2] then
 ngx.var.resp_body = ngx.ctx.buffered
end
';

 location / {
 echo"Hello World!";
}
}
}

原文地址：http://www.thinksaas.cn/group/topic/347828/