解决nginx+lua搭建文件上传下载服务问题

 export LUAJIT_LIB=/usr/local/luajit/lib export LUAJIT_INC=/usr/local/luajit/include/luajit-2.0 ./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --add-module=/home/oicq/jeffzhuang/ngx_devel_kit-0.3.0 --add-module=/home/oicq/jeffzhuang/lua-nginx-module-0.10. make -j2 make install

 --文件下载服务写到 saveRootPath .."/" .. filename 下面 function DownLoad() local chunk_size = 4096 local 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) end form:set_timeout(100000) while true do local typ,res,err=form:read() if not typ then ErrorMsg="failed to read :"..err return 1 end if typ =="header" then local key=res[1] local value=res[2] if key =="Content-Disposition" then 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, "=") filename = string.sub(kvfile[2], 2, -2) if filename then --获取文件后缀名字 fileExtension=getExtension(filename) local linuxTime=tostring(os.time()) filePath=saveRootPath .."/" ..linuxTime..filename fileToSave,errmsg = io.open(filePath, "w+") --存储的文件路径 --ngx.say("failed to open file ", filePath) if not fileToSave then --ngx.say("failed to open file ", filePath .. errmsg) ErrorMsg="打开文件失败"..filePath .. errmsg return 1 end else ErrorMsg="请求参数找不到文件名字" return 1 end --跳出循环 break end end end elseif typ =="body" then if fileToSave then fileToSave:write(res) fileMd5:update(res) end elseif typ =="part_end" then if fileToSave then local md5_sum=fileMd5:final() --ngx.say("md5: ", str.to_hex(md5_sum)) fileMD532=str.to_hex(md5_sum) fileToSave:close() fileToSave = nil end elseif typ =="eof" then break else ngx.log(ngx.INFO, "do other things") end end return 0 end

 -- 读取byte function readInt8(tcp) local next, val = string.unpack(tcp:receive(1), "b") return tonumber(val); end -- 读取int16 function readInt16(tcp) local next, val = string.unpack(tcp:receive(2), "h"); return tonumber(val); end -- 读取int32 function readInt32(tcp) local next, val = string.unpack(tcp:receive(4), ">i"); return tonumber(val); end -- 读取字符串 function readString(tcp,len) return tostring(tcp:receive(len)); end

 jsonData["filename"]=fileMD532 .. "." .. fileExtension jsonData["cmd"]="write" jsonData["fileSize"]=tostring(filelen) jsonData["path"]=System.."/"..StorageDate local Jsonstr=cjson.encode(jsonData) local uiLen=string.len(Jsonstr) senddata=bpack(">b1IAb",startIndex,uiLen,Jsonstr,endIndex) socket:send(senddata)

 local ErrorUrl="/downloadError.html" ErrorMsg="url 参数解析有问题 "..index return ngx.redirect(ErrorUrl.."?msg="..ErrorMsg,``` ngx.HTTP_MOVED_TEMPORARILY)