ajaxFileUpload + lua-resty-upload 上传文件

时间：2021-03-22 13:08:01

ajaxFileUpload下载地址

地址：http://pan.baidu.com/s/1mgJypz6

html页面

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>

    <title>Untitled</title>

    <script src="jquery-1.7.1.js"></script>

    <script src="ajaxfileupload.js"></script>

     <script type="text/javascript">

        $(function () {

            $(":button").click(function () {

                ajaxFileUpload();

            })

        })

        function ajaxFileUpload() {

            $.ajaxFileUpload

            (

                {

                    url: '/dsideal_yy/rating/test', //用于文件上传的服务器端请求地址

                    fileElementId: 'file1', //文件上传空间的id属性  <input type="file" id="file" name="file" />

                    dataType: 'json', //返回值类型 一般设置为json

                    success: function (data)  //服务器成功响应处理函数

                    {

                        alert(data.msg);

                    }

                }

            )

            return false;

        }

    </script>

  </head>

  <body>

    <body>

        <p><input type="file" id="file1" name="file" /></p>

        <input type="button" value="上传" />

    </body>

</html>

lua代码

local upload = require "resty.upload"

local uuid =  require "resty.uuid";

local chunk_size =

local form = upload:new(chunk_size)

local file

--获取文件名

function get_filename(res)

    local filename = ngx.re.match(res,'(.+)filename="(.+)"(.*)')

    if filename then

        return filename[]

    end

end 

--获取文件扩展名

function getExtension(str)

    return str:match(".+%.(%w+)$")

end

while true do

    local typ, res, err = form:read()

    if not typ then

         ngx.say("{error:'error', msg:'"..tostring(err).."',imgurl:''}")

         return

    end

    if typ == "header" then

        if res[] ~= "Content-Type" then

            local file_id = uuid.new()

            local filen_ame = get_filename(res[])

            local extension = getExtension(filen_ame)

            local dir = string.sub(file_id,,)

            local file_name = "/usr/local/tomcat7/webapps/dsideal_yy/html/down/Material/"..dir.."/"..file_id.."."..extension

            if file_name then

                file = io.open(file_name, "w+")

                if not file then

                    ngx.say("{error:'error', msg:'failed to open file',imgurl:''}")

                    return

                end

            end

        end

     elseif typ == "body" then

        if file then

            file:write(res)

        end

    elseif typ == "part_end" then

        file:close()

        file = nil

    elseif typ == "eof" then

        break

    else

        -- do nothing

    end

end

ngx.say("{error:'success', msg:'上传成功！',imgurl:''}")

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