ruby on rails nginx 如何上传大文件？
用ruby on
rails开发的web，用了carrierwave和dropzone实现了上传文件。但后来发现，一旦文件大于200M时，就不行了，特别慢，虽说carrierwave有个move_to_cache、move_to_store的选项，但好像起不了作用。于是又去研究其它的上传方式，之后发现nginx的upload
module比较靠普，但这样做有一个问题就是nginx必须是编译安装的，要把upload
module一块编译进行才能用。在这里记录一下实现的具体流程。
一、编译安装nginx，并把upload module模块编译进去
如果没有安装编译工具，要先安装编译工具：yum -y install gcc automake autoconf libtool make
下载nginx： http://nginx.org/download/nginx-1.10.2.tar.gz
下载upload module： www.grid.net.ru/nginx/download/nginx_upload_module-2.2.0.tar.gz
解压：
tar -zxvf nginx-1.10.2.tar.gz
tar -zxvf nginx_upload_module-2.2.0.tar.gz
cd nginx-1.10.2
开始安装：
./configure
--sbin-path=/usr/local/nginx/nginx \
--conf-path=/usr/local/nginx/nginx.conf \
--pid-path=/usr/local/nginx/nginx.pid \
--with-http_ssl_module \
--with-pcre=../pcre-8.40 \
--with-zlib=../zlib-1.2.11 \
--add-module=../nginx_upload_module-2.2.0
make && make install
如果没有权限就加上sudo
nginx -v
提示：nginx version: nginx/1.10.2， 则安装成功
二、修改nginx的配置文件
# HTTPS server configuration
# 这个使用的是puma启动地址
upstream localurl {
server localhost:3000;
}
server {
listen 80;
try_files $uri/index.html $uri.html $uri @app_server;
index index.html index.htm;
client_max_body_size 2000m; # 大文件上传支持
client_body_buffer_size 1024k;
location ~* ^/(assets)/{
expires max;
gzip_static on; # to serve pre-gzipped version
add_header Cache-Control public;
break;
}
location ~* ^/(imgs|images|javascripts|stylesheets|img|assets|favicon.ico|download|fonts)/{
access_log off;
log_not_found off;
expires max;
break;
}
## send request back to apache ##
# 设置代理
location / {
proxy_pass http://localurl;
#Proxy Settings
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
proxy_max_temp_file_size 0;
proxy_connect_timeout 200;
proxy_send_timeout 1200;
proxy_read_timeout 1200;
proxy_buffer_size 4k;
proxy_buffers 4 128k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
}
# Upload form should be submitted to this location
location /uploads/file_upload { # rails中要有相同可以上传的地址，用来处理上传成功后的逻辑
# autoindex on;
# Pass altered request body to this location
upload_pass @test;
# Store files to this directory
# The directory is hashed, subdirectories 0 1 2 3 4 5 6 7 8 9 should exist
upload_store /upload_path/uploads; # 文件存放的路径
# Allow uploaded files to be read only by user
upload_store_access user:rw group:rw all:rw; # 使用的用户及权限，可以根据需要调整
upload_limit_rate 0;
upload_max_file_size 0;
# Set specified fields in request body
upload_set_form_field $upload_field_name.name "$upload_file_name";
upload_set_form_field $upload_field_name.content_type "$upload_content_type";
upload_set_form_field $upload_field_name.path "$upload_tmp_path";
# Inform backend about hash and size of a file
upload_aggregate_form_field "$upload_field_name.md5" "$upload_file_md5";
upload_aggregate_form_field "$upload_field_name.size" "$upload_file_size";
upload_pass_form_field "^submit$|^description$";
upload_pass_form_field "authenticity_token|utf8"; #这里authenticity_token是rails的验证token，要传到后面rails里去，要不然rails会报错
upload_cleanup 400 404 499 500-505;
}
# Pass altered request body to a backend
location @test {
proxy_pass http://localurl;
}
}
三、rails处理文件
在相应的controller里：
def file_upload
file = params["file.path"] # 接收文件的存放路径
FileUtils.mv file, "#{Rails.root}/public/uploads/filename.rar" #把文件转移需要的地方，nginx上传后的文件名是一串字符并没有扩展名，所以这里要重命名一下。
# 这里写逻辑代码
end
这样就完成了大文件的上传和处理
