想实现在vs2017中用swfupload组件上传文件。请教为什么“选择文件”按钮不显示？代码如下，谢谢！

qq_37930705 2018-06-06 09:57:52

<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="upmorefile.aspx.vb" Inherits="skzlk.upmorefile" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>无标题页</title>
<link href="swfupload/css/default.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="swfupload/js/swfupload.js"></script>
<script type="text/javascript" src="swfupload/js/swfupload.queue.js"></script>
<script type="text/javascript" src="swfupload/js/fileprogress.js"></script>
<script type="text/javascript" src="swfupload/js/handlers.js"></script>
<script type="text/javascript">
var swfu;

window.onload = function() {
var settings = {
flash_url : "swfupload/js/swfupload.swf",

upload_url: "upFile.aspx",
post_params: {
"ASPSESSID": "<%=Session.SessionID %>"
},
file_size_limit : "100 MB",
file_types : "*.*", //这是全部文件都可以上传，如果要限制只有某些文件上传，则可以这么写 file_types : "*.jpg;*.gif;*.png",
file_types_description : "All Files",
file_upload_limit : 100,
file_queue_limit : 0,
custom_settings : {
progressTarget : "fsUploadProgress",
cancelButtonId : "btnCancel"
},
debug: false,

// Button settings
//这儿是swfupload v2新增加的功能，由于flash player 10的安全性的提高所以增加了此功能。
//在SWFUpload v2中，不能再使用html的button来触发SWFUpload，必须使用定制的Button，这其中比较要注意的是，button不能再用css控制，需要用图片来显示
button_image_url: "swfupload/images/XPButtonNoText_160x22.png",
button_placeholder_id: "spanButtonPlaceholder",
button_width: 160,
button_height: 22,
button_text: '<span class="button"> 选择文件 <span class="buttonSmall">(10 MB Max)</span></span>',
button_text_style: '.button { font-family: Helvetica, Arial, sans-serif; font-size: 14pt; } .buttonSmall { font-size: 10pt; }',
button_text_top_padding: 1,
button_text_left_padding: 5,

// The event handler functions are defined in handlers.js
file_queued_handler : fileQueued,
file_queue_error_handler : fileQueueError,
file_dialog_complete_handler : fileDialogComplete,
upload_start_handler : uploadStart,
upload_progress_handler : uploadProgress,
upload_error_handler : uploadError,
upload_success_handler : uploadSuccess,
upload_complete_handler : uploadComplete,
queue_complete_handler : queueComplete // Queue plugin event
};

swfu = new SWFUpload(settings);
};
</script>
</head>
<body>
<div id="content">
<h2>一次选择多个文件进行上传</h2>
<form id="form1" runat="Server">

<div>
<span id="spanButtonPlaceHolder"></span>
<input id="btnCancel" type="button" value="取消全部上传" onclick="swfu.cancelQueue();" disabled="disabled" style="margin-left: 2px; font-size: 8pt; height: 22px;" />
</div>
<p> </p>
<div class="fieldset flash" id="fsUploadProgress">
<span class="legend">Upload Queue</span>
</div>
<div id="divStatus">0 个文件已经上传</div>

</form>
</div>
</body>
</html>

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