ASP实例:一个简单的ASP无组件上传类

作者:网络 来源:佚名 更新时间:2008-12-04 18:43:36 点击:

简单的asp无组件上传类,发出来让大家看看。可以做做实验!

以下为引用的内容:

<%@ language="javascript"%>
<%
var self = request.servervariables("script_name");
if (request.servervariables("request_method")=="post")
{
        var oo = new uploadfile();
        oo.path = "myfile";                        //存放路径,为空表示当前路径,默认为uploadfile
        oo.named = "file";                        //命名方式,date表示用日期来命名,file表示用文件名本身,默认为file
        oo.ext = "all";                                //允许上传的扩展名,all表示都允许,默认为all
        oo.over = true;                                //当存在相同文件名时是否覆盖,默认为false
        oo.size = 1*1024*1024;                //最大字节数限制,默认为1g
        oo.upload();
        response.write('<script type="text/javascript">location.replace("'+self+'")</script>');
}

//asp无组件上传类
function uploadfile()
{
    var blen  = request.totalbytes;
    var btext = request.binaryread(blen);
    var oo = server.createobject("adodb.stream");
    oo.mode = 3;
        this.path = "uploadfile";
        this.named = "file";
        this.ext = "all";
        this.over = false;
        this.size = 1*1024*1024*1024;        //1gb

        //文件上传       
        this.upload = function ()
        {
                var o = this.getinfo();
                if (o.size>this.size)
                {
                        alert("文件过大,不能上传!");
                        return;               
                }
                var f = this.getfilename();
                var ext = f.replace(/^.+\./,"");
                if (this.ext!="all"&&!new regexp(this.ext.replace(/,/g,"|"),"ig").test(ext))
                {
                        alert("目前暂不支持扩展名为 "+ext+" 的文件上传!");
                        return;
                }
                if (this.named=="date")
                {
                        f = new date().tolocalestring().replace(/\d/g,"") + "." + ext;
                }

                oo.open();
                oo.type = 1;
                oo.write(o.bin);
                this.path = this.path.replace(/[^\/\\]$/,"$&/");
                var fso = server.createobject("scripting.filesystemobject");
                if(this.path!=""&&!fso.folderexists(server.mappath(this.path)))
                {
                        fso.createfolder(server.mappath(this.path));
                }
                try
                {
                        oo.savetofile(server.mappath(this.path+f),this.over?2:1);
                        alert("上传成功!");
                }
                catch(e)
                {
                        alert("对不起,此文件已存在!");
                }
                oo.close();
                delete(oo);

        }

        //获取二进制和文件字节数
        this.getinfo = function ()
        {
                oo.open();
                oo.type=1;
                oo.write(btext);
                oo.position = 0;                               
                oo.type=2;
                oo.charset="unicode";
                var gbcode=escape(oo.readtext()).replace(/%u(..)(..)/g,"%$2%$1");
                var spos=gbcode.indexof("%0d%0a%0d%0a")+12;
                var slength=blen-(gbcode.substring(0,gbcode.indexof("%0d%0a")).length/3)-spos/3-6;
                oo.close();
       
                oo.open();
                oo.type = 1;       
                oo.write(btext);
                oo.position=spos/3;
                var bfile=oo.read(slength);
                oo.close();
               
                return { bin:bfile, size:slength };
        }

        //获取文件名       
        this.getfilename = function ()
        {
                oo.open();
                oo.type = 2;
                oo.writetext(btext);
                oo.position = 0;
                oo.charset = "gb2312";
                var filename = oo.readtext().match(/filename=\"(.+?)\"/i)[1].split("\\").slice(-1)[0];
                oo.close();
                return filename;
        }
       
        function alert(msg)
        {
                response.write('<script type="text/javascript">alert("'+msg+'");</script>');
        }
}
%>
<html>
<head>
  <title>asp无组件上传类</title>
  <meta http-equiv="content-type" content="text/html; charset=gb2312">
</head>
<body>
  <form action="<%=self%>" method="post" enctype="multipart/form-data" onsubmit="return (this.upfile.value!='');">
    <input type="file" name="upfile"/>
    <input type="submit" value="上传文件"/>
  </form>
</body>
</html>


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