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

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

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]

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);

}

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);

}

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*****

主题：如何禁止上传".wmf",".js",".css" ,".html",".htm",".zip",".rar" 文件