nginx+lua实现文件上传下载

本文主要是介绍nginx+lua实现文件上传下载，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

当前环境

  0 11:26:57 root@test-a,172.16.15.21:~ # cat /etc/redhat-release 
CentOS Linux release 7.9.2009 (Core)
  0 11:27:08 root@test-a,172.16.15.21:~ # uname -r
3.10.0-1160.36.2.el7.x86_64

下载相关的安装包，并解压。

  0 11:27:14 root@test-a,172.16.15.21:~ # cd /usr/local/src/
  0 11:27:28 root@test-a,172.16.15.21:/usr/local/src # wget http://nginx.org/download/nginx-1.18.0.tar.gz
  0 11:27:39 root@test-a,172.16.15.21:/usr/local/src # wget https://github.com/vkholodkov/nginx-upload-module/archive/refs/tags/2.3.0.tar.gz
  0 11:28:06 root@test-a,172.16.15.21:/usr/local/src # wget https://github.com/openresty/luajit2/archive/refs/tags/v2.1-20210510.tar.gz
  0 11:28:13 root@test-a,172.16.15.21:/usr/local/src # wget https://github.com/openresty/lua-resty-upload/archive/refs/tags/v0.10.tar.gz
  0 11:28:58 root@test-a,172.16.15.21:/usr/local/src # wget https://github.com/openresty/lua-nginx-module/archive/refs/tags/v0.10.14.tar.gz
  0 11:29:42 root@test-a,172.16.15.21:/usr/local/src # tar xf nginx-1.18.0.tar.gz 
  0 11:29:53 root@test-a,172.16.15.21:/usr/local/src # tar xf 2.3.0.tar.gz
  0 11:29:57 root@test-a,172.16.15.21:/usr/local/src # tar xf v0.10.14.tar.gz
  0 11:30:01 root@test-a,172.16.15.21:/usr/local/src # tar xf v0.10.tar.gz
  0 11:30:17 root@test-a,172.16.15.21:/usr/local/src # tar xf v2.1-20210510.tar.gz

安装配置各类依赖。

  0 11:30:25 root@test-a,172.16.15.21:/usr/local/src/luajit2-2.1-20210510 # yum -y install pcre-devel openssl-devel
  0 11:32:17 root@test-a,172.16.15.21:/usr/local/src/luajit2-2.1-20210510 # make PREFIX=/usr/local/luajit2
  0 11:32:48 root@test-a,172.16.15.21:/usr/local/src/luajit2-2.1-20210510 # make install PREFIX=/usr/local/luajit2

编译安装nginx。

  0 11:33:53 root@test-a,172.16.15.21:/usr/local/src/luajit2-2.1-20210510 # cd ../nginx-1.18.0/
  0 11:34:24 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # export LUAJIT_LIB=/usr/local/luajit2/lib
  0 11:34:45 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # export LUAJIT_INC=/usr/local/luajit2/include/luajit-2.1
  0 11:35:11 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # useradd -M -s /sbin/nologin www
  0 11:38:35 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # ./configure --user=www --group=www --prefix=/usr/local/nginx --with-stream --with-http_stub_status_module --with-http_ssl_module --with-http_realip_module --with-http_sub_module --with-http_gzip_static_module --with-http_v2_module --with-pcre --with-ld-opt=-Wl,-rpath,/usr/local/luajit2/lib --add-module=/usr/local/src/nginx-upload-module-2.3.0 --add-module=/usr/local/src/lua-nginx-module-0.10.14
  0 11:39:26 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # make && make install

配置resty。

  0 11:41:20 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # mkdir -p /usr/local/luajit2/lib/lua/5.1/resty
  0 11:41:44 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # cp ../lua-resty-upload-0.10/lib/resty/upload.lua /usr/local/luajit2/lib/lua/5.1/
  0 11:42:17 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # vim /usr/local/luajit2/lib/lua/5.1/my_upload.lua
local upload = require "resty.upload"

local function my_get_file_name(header)
    local file_name
    for i, ele in ipairs(header) do
        file_name = string.match(ele, 'filename="(.*)"')
        if file_name and file_name ~= '' then
            return file_name
        end
    end
    return nil
end

local chunk_size = 4096
local form = upload:new(chunk_size)
local file
local file_path
while true do
    local typ, res, err = form:read()

    if not typ then
         ngx.say("failed to read: ", err)
         return
    end

    if typ == "header" then
        local file_name = my_get_file_name(res)
        if file_name then
            file_path = ngx.var.store_path..file_name
            file = io.open(file_path, "w+")
            if not file then
                ngx.say("failed to open file ", file_path)
                return
            end
        end

    elseif typ == "body" then
        if file then
            file:write(res)
        end

    elseif typ == "part_end" then
        if file then
            file:close()
            file = nil
            ngx.say("upload to "..file_path.." successfully!")
        end
    elseif typ == "eof" then
        break

    else
        -- do nothing
    end
end

配置并启动nginx。

# 安全起见，配置访问密码。
  0 11:52:40 root@test-a,172.16.15.21:/usr/local/src/nginx-1.18.0 # cd /usr/local/nginx/
  0 11:52:48 root@test-a,172.16.15.21:/usr/local/nginx # echo -n 'merle:' >>conf/.httppasswd
  0 11:53:15 root@test-a,172.16.15.21:/usr/local/nginx # openssl passwd -apr1 >>conf/.httppasswd
  0 11:53:35 root@test-a,172.16.15.21:/usr/local/nginx # vim conf/nginx.conf
user  www www;
worker_processes  auto;
error_log  logs/error.log;
pid        logs/nginx.pid;

events {
    use epoll;
    worker_connections  65535;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    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  logs/access.log  main;
    sendfile        on;
    keepalive_timeout  65;
    lua_package_path '/usr/local/luajit2/lib/lua/5.1/?.lua;;';

    server {
        listen       8888;
        server_name  localhost;
        client_max_body_size 500m;

        # auth
        auth_basic "security download area";
        auth_basic_user_file "/usr/local/nginx/conf/.httppasswd";

        # download
        autoindex on;
        autoindex_localtime on;

        location / {
            root   /server/web_files;		# 文件存储目录
        }

        location ~ ^/upload(/.*)?$ {
            set $store_path /server/web_files$1/;		# 文件存储目录
            content_by_lua_file /usr/local/luajit2/lib/lua/5.1/my_upload.lua;
        }
    }
}
  0 11:59:03 root@test-a,172.16.15.21:/usr/local/nginx # \rm -r logs
  0 12:00:01 root@test-a,172.16.15.21:/usr/local/nginx # mkdir -p /server/logs/nginx /server/web_files
  0 12:00:06 root@test-a,172.16.15.21:/usr/local/nginx # ln -sf /server/logs/nginx /usr/local/nginx/logs
  0 12:00:12 root@test-a,172.16.15.21:/usr/local/nginx # ln -s /usr/local/nginx/sbin/nginx /usr/bin/
  0 12:00:39 root@test-a,172.16.15.21:/usr/local/nginx # nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
  0 12:01:24 root@test-a,172.16.15.21:/usr/local/nginx # nginx
  0 12:01:30 root@test-a,172.16.15.21:/usr/local/nginx # netstat -lntp | grep 8888
tcp        0      0 0.0.0.0:8888            0.0.0.0:*               LISTEN      9529/nginx: master
# 创建几个测试文件，下面测试使用。
  0 12:05:41 root@test-a,172.16.15.21:/server/web_files # touch info{1..5}.txt
  0 12:06:39 root@test-a,172.16.15.21:/server/web_files # echo 'hello world' >info1.txt
# 为文件存储目录授权，否则等下上传不上（root启动nginx请忽略）。
  0 12:07:32 root@test-a,172.16.15.21:/server/web_files # chown -R www. /server/web_files

测试访问（为了区分，使用内网其它主机访问测试）。

  0 12:09:54 root@test-b,172.16.15.22:~ # curl -u "merle:123456" http://172.16.15.21:8888
<html>
<head><title>Index of /</title></head>
<body>
<h1>Index of /</h1><hr><pre><a href="../">../</a>
<a href="info1.txt">info1.txt</a>                                          23-Sep-2021 12:05                   0
<a href="info2.txt">info2.txt</a>                                          23-Sep-2021 12:05                   0
<a href="info3.txt">info3.txt</a>                                          23-Sep-2021 12:05                   0
<a href="info4.txt">info4.txt</a>                                          23-Sep-2021 12:05                   0
<a href="info5.txt">info5.txt</a>                                          23-Sep-2021 12:05                   0
</pre><hr></body>
</html>
# 使用命令下载文件。
  0 12:13:24 root@test-b,172.16.15.22:~ # wget --user=merle --password="123456" -c -P /tmp http://172.16.15.21:8888/info1.txt
--2021-09-23 12:13:30--  http://172.16.15.21:8888/info1.txt
正在连接 172.16.15.21:8888... 已连接。
已发出 HTTP 请求，正在等待回应... 401 Unauthorized
再次使用存在的到 172.16.15.21:8888 的连接。
已发出 HTTP 请求，正在等待回应... 200 OK
长度：12 [text/plain]
正在保存至: “/tmp/info1.txt”

100%[==============================================================================================>] 12          --.-K/s 用时 0s      

2021-09-23 12:13:30 (1.20 MB/s) - 已保存 “/tmp/info1.txt” [12/12])
  0 12:13:30 root@test-b,172.16.15.22:~ # cat /tmp/info1.txt 
hello world
# 使用命令上传文件。
  0 12:40:35 root@test-b,172.16.15.22:~ # curl -u "merle:123456" -F filea=@testaaa http://172.16.15.21:8888/upload
upload to /server/web_files/testaaa successfully!
# 在服务端查看文件
  0 12:42:49 root@test-a,172.16.15.21:/server/web_files # ll testaaa
-rw-rw-rw- 1 www www 12 9月  23 12:40 testaaa
  0 12:42:56 root@test-a,172.16.15.21:/server/web_files # cat testaaa 
How are you

写作不易，转载请注明出处，谢谢~~

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