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-  Foxtable(狐表)  (http://foxtable.com/bbs/index.asp)
--  专家坐堂  (http://foxtable.com/bbs/list.asp?boardid=2)
----  如何禁止上传".wmf",".js",".css" ,".html",".htm",".zip",".rar" 文件  (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=105480)

--  作者:zhangjian222200
--  发布时间:2017/8/20 18:07:00
--  如何禁止上传".wmf",".js",".css" ,".html",".htm",".zip",".rar" 文件
如何禁止上传".wmf",".js",".css" ,".html",".htm",".zip",".rar" 文件
居然还有人上传成功.exe后缀名图片
Dim e As RequestEventArgs = args(0)                            \'注册第7页,上传照片
Dim wb As New weui

    wb.AddTopTips("","toptip1","") \'用于显示动态错误提示
    
    wb.AddForm("","form1","valid_images.htm")
    With wb.AddInputGroup("form1","ipg1","展示照(选择1张靓照即可)") \'文件上传(1个)
        With.AddUploader("up1","",False)
        .AllowDelete = True \'允许用户删除图片
        .ScaleWidth = 400 \'自动压缩图片宽度为400个像素,高度等比例压缩
    End With
End With
With wb.AddInputGroup("form1","ipg22","生活照(选择3张以上靓照)") \'带图片浏览的文件上传(最少4个)
    With.AddUploader("up4","",True) \'True表示允许一次上传多个文件
    .AllowDelete = True \'允许删除
    .Incremental = True \'允许 重复选择文件或连续拍照
    .ScaleWidth = 400 \'自动压缩图片宽度为400个像素,高度等比例压缩
End With
End With
With wb.AddButtonGroup("form1","btg1",True)
    .Add("btn1", "提交", "button").Attribute= "" \'调用js函数上传
End With
wb.AddToast("","tst1", "正在上传",1)
wb.AddToast("","tst2", "上传成功",0)
wb.AddToast("","tst3", "上传失败",0).Icon= "warn"

wb.AppendHTML("<script src=\'./lib/ajaxform_images.js\'></script>") \'引入脚本文件
e.WriteString(wb.Build) \'生成网页

js代码:
function validit_images(){
  var v1 = document.getElementById("up1_thumbnails").getElementsByTagName("li").length;
  var v2 = document.getElementById("up4_thumbnails").getElementsByTagName("li").length;
  //alert(v1 + " " + v2);
 if(v1 < 1){
  showTopTips("toptip1","请选择1张展示照上传!",2000);
  return false;
  }
 if(v1 > 1){
  showTopTips("toptip1","展示照只可以上传1张!",2000);
  return false;
  }
 if(v2 < 3){
  showTopTips("toptip1","请选择3张以上生活照上传!",2000);
  return false;
  }
 if(v2 > 9){
  showTopTips("toptip1","生活照最多可以上传9张!",2000);
  return false;
  }
  show("tst1",2000);
  var result = submitAjaxForm(\'form1\',\'afterSubmit\');
}
function afterSubmit(result){
  hide("tst1");
 if (result==\'OK\') {
  show("tst2");
  location="success.htm";
  }
 else{
    show("tst3",2000);
  }
}
[此贴子已经被作者于2017/8/20 18:21:29编辑过]

--  作者:有点甜
--  发布时间:2017/8/20 18:26:00
--  

方法一:在你httprequest事件处理,判断上传的文件名,根据后缀名判断,最后你保存的时候,不是自由控制么?

 

方法二:在js里面直接判断,foxtable的weui.me.js已经做了判断的啊 previewFile 函数


--  作者:zhangjian222200
--  发布时间:2017/8/20 18:48:00
--  
1楼js补充下述粉色部分,行么?
function validit_images(){
  var v1 = document.getElementById("up1_thumbnails").getElementsByTagName("li").length;
  var v2 = document.getElementById("up4_thumbnails").getElementsByTagName("li").length;
  //alert(v1 + " " + v2);
  var ary1 = document.getElementById("up1_thumbnails").split(".")
  var ary4 = document.getElementById("up4_thumbnails").split(".")
  if(ary1[1] <> \'jpg\' or ary1[1] <> \'jpeg\' or ary1[1] <> \'png\' or ary1[1] <> \'gif\' or ary1[1] <> \'bmp\'){ 
     showTopTips("toptip1","请上传正确的文件格式!",2000);
     return false;
  }
  if(ary4[1] <> \'jpg\' or ary4[1] <> \'jpeg\' or ary4[1] <> \'png\' or ary4[1] <> \'gif\' or ary4[1] <> \'bmp\'){ 
     showTopTips("toptip1","请上传正确的文件格式!",2000);
     return false;
  }
 if(v1 < 1){
  showTopTips("toptip1","请选择1张展示照上传!",2000);
  return false;
  }
 if(v1 > 1){
  showTopTips("toptip1","展示照只可以上传1张!",2000);
  return false;
  }
 if(v2 < 3){
  showTopTips("toptip1","请选择3张以上生活照上传!",2000);
  return false;
  }
 if(v2 > 9){
  showTopTips("toptip1","生活照最多可以上传9张!",2000);
  return false;
  }
  show("tst1",2000);
  var result = submitAjaxForm(\'form1\',\'afterSubmit\');
}
function afterSubmit(result){
  hide("tst1");
 if (result==\'OK\') {
  show("tst2");
  location="success.htm";
  }
 else{
    show("tst3",2000);
  }
}

--  作者:有点甜
--  发布时间:2017/8/20 19:39:00
--  

var frm = document.getElementById("form1");
var frmdata = new FormData(frm);
if (frm.incremental) {
    var fluds = frm.getElementsByClassName("weui_uploader_input");
    for (var idx = 0; idx < fluds.length; idx++) {
        var files = fluds[idx].Files;
        if (files) {
            for (var i = 0; i < files.length; i++) {
                alert(files[i].blobFile);
                var fln = files[i].blobFile
                if (typeof(fln) == "undefined") {
                    alert("文件格式不正确");
                    return false;
                }
                fln = fln.substring(fln.lastIndexOf(".") + 1).toLowerCase();
                switch (fln) {
                case "jpg":
                case "jpeg":
                case "png":
                case "gif":
                case "bmp":
                case "wmf":
                    break;
                }
            }
        }
    }
}


--  作者:zhangjian222200
--  发布时间:2017/8/20 21:14:00
--  
将楼上代码插入到1楼js代码内,可以?
function validit_images(){
  var v1 = document.getElementById("up1_thumbnails").getElementsByTagName("li").length;
  var v2 = document.getElementById("up4_thumbnails").getElementsByTagName("li").length;
  //alert(v1 + " " + v2);

var frm = document.getElementById("form1");
var frmdata = new FormData(frm);
if (frm.incremental) {
    var fluds = frm.getElementsByClassName("weui_uploader_input");
    for (var idx = 0; idx < fluds.length; idx++) {
        var files = fluds[idx].Files;
        if (files) {
            for (var i = 0; i < files.length; i++) {
                alert(files[i].blobFile);
                var fln = files[i].blobFile
                if (typeof(fln) == "undefined") {
                    alert("文件格式不正确");
                    return false;
                }
                fln = fln.substring(fln.lastIndexOf(".") + 1).toLowerCase();
                switch (fln) {
                case "jpg":
                case "jpeg":
                case "png":
                case "gif":
                case "bmp":
                case "wmf":
                    break;
                }
            }
        }
    }
}

 if(v1 < 1){
  showTopTips("toptip1","请选择1张展示照上传!",2000);
  return false;
  }
 if(v1 > 1){
  showTopTips("toptip1","展示照只可以上传1张!",2000);
  return false;
  }
 if(v2 < 3){
  showTopTips("toptip1","请选择3张以上生活照上传!",2000);
  return false;
  }
 if(v2 > 9){
  showTopTips("toptip1","生活照最多可以上传9张!",2000);
  return false;
  }
  show("tst1",2000);
  var result = submitAjaxForm(\'form1\',\'afterSubmit\');
}
function afterSubmit(result){
  hide("tst1");
 if (result==\'OK\') {
  show("tst2");
  location="success.htm";
  }
 else{
    show("tst3",2000);
  }
}

--  作者:有点甜
--  发布时间:2017/8/20 21:32:00
--  
我测试没问题。
--  作者:zhangjian222200
--  发布时间:2017/8/20 22:10:00
--  

var frm = document.getElementById("form1");
var frmdata = new FormData(frm);
if (frm.incremental) {
    var fluds = frm.getElementsByClassName("weui_uploader_input");
    for (var idx = 0; idx < fluds.length; idx++) {
        var files = fluds[idx].Files;
        if (files) {
            for (var i = 0; i < files.length; i++) {
                alert(files[i].blobFile);
                var fln = files[i].blobFile
                if (typeof(fln) == "undefined") {
                    alert("文件格式不正确");
                    return false;
                }
                fln = fln.substring(fln.lastIndexOf(".") + 1).toLowerCase();
                switch (fln) {
                case "jpg":
                case "jpeg":
                case "png":
                case "gif":
                case "bmp":
                case "wmf": 1.如果图片格式是wmf,
中断执行,是这样吗?

                    break;
                }
            }
        }
    }
}


 2.中断执行后,继续执行下述代码吗?

 if(v1 < 1){
  showTopTips("toptip1","请选择1张展示照上传!",2000);
  return false;
  }
***更多代码*****

--  作者:有点甜
--  发布时间:2017/8/20 22:16:00
--  

var frm = document.getElementById("form1");
var frmdata = new FormData(frm);
if (frm.incremental) {
    var fluds = frm.getElementsByClassName("weui_uploader_input");
    for (var idx = 0; idx < fluds.length; idx++) {
        var files = fluds[idx].Files;
        if (files) {
            for (var i = 0; i < files.length; i++) {
                alert(files[i].blobFile);
                var fln = files[i].blobFile
                if (typeof(fln) == "undefined") {
                    alert("文件格式不正确");
                    return false;
                }
                fln = fln.substring(fln.lastIndexOf(".") + 1).toLowerCase();
                switch (fln) {
                case "jpg":
                case "jpeg":
                case "png":
                case "gif":
                case "bmp":

                    break;

                default:

                    alert("格式错误");

                    return false;
                }
            }
        }
    }
}