1. 下载包安装Openresty

openresty-1.13.6.1下载地址 https://openresty.org/download/openresty-1.13.6.1.tar.gz

安装请自行百度。

2. 配置

2.1 nginx.conf

user root;worker_processes  20;error_log  logs/error.log notice;events {    worker_connections  1024;}http {    include       mime.types;    default_type  application/octet-stream;    server {        listen       8082;        server_name  localhost;        # 最大允许上传的文件大小        client_max_body_size 200m;                       location / {            root   html;            index  index.html index.htm;        }        set $store_dir "/sdf/slb/openresty/nginx/html/download/"; # 文件存储路径        # 文件上传接口：http://xxx:8082/upfile        location /upfile {             content_by_lua_file conf/lua/upload.lua; # 实现文件上传的逻辑        }        # 文件下载入口: http://xxx:8082/download        location /download {            autoindex on;            autoindex_localtime on;            root   html;            index  index.html;        }        # redirect server error pages to the static page /50x.html        error_page   500 502 503 504  /50x.html;        location = /50x.html {            root   html;        }    }}

2.2 upload.lua（文件位于conf/lua/upload.lua）

-- upload.lua--==========================================-- 文件上传--==========================================local upload = require "resty.upload"local cjson = require "cjson"local chunk_size = 4096local form, err = upload:new(chunk_size)if not form then    ngx.log(ngx.ERR, "failed to new upload: ", err)    ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)endform:set_timeout(1000)-- 字符串 split 分割string.split = function(s, p)    local rt= {}    string.gsub(s, '[^'..p..']+', function(w) table.insert(rt, w) end )    return rtend-- 支持字符串前后 trimstring.trim = function(s)    return (s:gsub("^%s*(.-)%s*$", "%1"))end-- 文件保存的根路径local saveRootPath = ngx.var.store_dir-- 保存的文件对象local fileToSave--文件是否成功保存local ret_save = falsewhile true do    local typ, res, err = form:read()    if not typ then        ngx.say("failed to read: ", err)        return    end    if typ == "header" then        -- 开始读取 http header        -- 解析出本次上传的文件名        local key = res[1]        local value = res[2]        if key == "Content-Disposition" then            -- 解析出本次上传的文件名            -- form-data; name="testFileName"; filename="testfile.txt"            local kvlist = string.split(value, ';')            for _, kv in ipairs(kvlist) do                local seg = string.trim(kv)                if seg:find("filename") then                    local kvfile = string.split(seg, "=")                    local filename = string.sub(kvfile[2], 2, -2)                    if filename then                        fileToSave = io.open(saveRootPath .. filename, "w+")                        if not fileToSave then                            ngx.say("failed to open file ", filename)                            return                        end                        break                    end                end            end        end    elseif typ == "body" then        -- 开始读取 http body        if fileToSave then            fileToSave:write(res)        end    elseif typ == "part_end" then        -- 文件写结束，关闭文件        if fileToSave then            fileToSave:close()            fileToSave = nil        end                ret_save = true    elseif typ == "eof" then        -- 文件读取结束        break    else        ngx.log(ngx.INFO, "do other things")    endendif ret_save then    ngx.say("save file ok")end