使用plupload自定义参数实现多文件上传

<script type="text/javascript">var map={};//文件id为key，文件类型为value的集合// Custom example logicvar uploader = new plupload.Uploader({runtimes : 'html5,flash,silverlight,html4',browse_button : 'pickfiles', // you can pass in id...container : document.getElementById('container'), // ... or DOM Element itselfurl : '../action/photoUpload.jsp',flash_swf_url : '../../js/Moxie.swf',silverlight_xap_url : '../../js/Moxie.xap',filters : {max_file_size : '5mb',mime_types : [ {title : "图片类型",extensions : "jpg,gif,png"} ]},init : {PostInit : function() {document.getElementById('uploadfiles').onclick = function() {uploader.start();return false;};},BeforeUpload:function(up,file){//重点在这里，上传的时候自定义参数信息uploader.setOption("multipart_params",{"apptype":${param.type},"id":${param.id},"fileType":map[file.id]});},FileUploaded:function(up,file){$("#"+file.id+"btn").parent().html("上传完毕");$("#"+file.id+"btn").remove();},FilesAdded : function(up, files) {if($("#fileType").val()==1){alert("请选择附件类型！");//清空刚才选择的文件plupload.each(files,function(file) {uploader.removeFile(file.id);});return false;}plupload.each(files,function(file) {map[file.id]=$("#fileType").val();$("#uploadTable").append("<tr id='"+file.id+"tr'><td>"+$("#fileType").val()+"</td><td>"+file.name+"</td><td><button type='button' id='"+file.id+"btn' onclick=del('"+file.id+"')>删除</button> </td><td id='"+file.id+"_progress'></td></tr>");});},UploadProgress : function(up, file) {$("#"+file.id+"_progress").html('<span>'+ file.percent + "%</span>");},Error : function(up, err) {alert("此文件上传失败！");}}});uploader.init();//根据文件id删除此文件，并且在table中删除此文件的信息function del(id){uploader.removeFile(id);$("#"+id+"tr").remove();map[id]="";}</script>

<div id="filelist"></div><div id="container"><center>提示：必须上传 "商户营业执照","税务登记证明","企业法人身份证","考察照片","商户信息调查表","商户协议" 才能提交审批！</center><label>附件类型:</label> <select name="fileType" id="fileType" ><option value="1">-------请选择-----</option><option value="商户营业执照">商户营业执照</option><option value="税务登记证明">税务登记证明</option><option value="商户信息变更表">商户信息变更表</option><option value="其他">其他</option></select><button class="button" id="pickfiles">选择文件</button>  <button class="button" id="uploadfiles">批量上传</button>  <button class="button" onclick="window.location.reload()">刷新</button>  <button class="button" onclick="window.close()">关闭窗口</button><table style="width: 600px" id="uploadTable" border="1"><tr><td>文件类型</td><td>文件名称</td><td>操作</td><td>上传进度</td></tr></table></div>