nginx默认会限制上传文件的大小为1M

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
     charset utf-8;
    log_format  main  ‘$remote_addr - $remote_user [$time_local] "$request" ‘
                      ‘$status $body_bytes_sent "$http_referer" ‘
                      ‘"$http_user_agent" "$http_x_forwarded_for"‘;

access_log  /var/log/nginx/access.log  main;
    client_max_body_size 10m;  #增加这个参数就可以指定最大上传文件大小为10m了；
    sendfile        on;
    #tcp_nopush     on;
    keepalive_timeout  65;