首先 在剛加載jsp時就加入上傳方法，所以 formDate 中的參數 zFileName是頁面剛加載時 exp1的值 ，後來通過js方法賦值不被讀過來，
如果 你想要獲得這個值，可在 調用uploadify之前先把參數加入，見 save 方法

$(document).ready(function() {

$(‘#edit_file_upload‘).uploadify({
    auto:false,
    buttonClass: "some-class",
    buttonCursor: ‘hand‘,
    height: 20,
    width: 90,
    buttonText: ‘<div>選擇文件</div>‘,
    fileSizeLimit : ‘102400KB‘,
    fileObjName: ‘myfile‘,
    fileTypeExts: ‘*.*‘,
    multi: true,
    preventCaching: true,
    queueID : ‘edit_file_upload-queue‘,
    progressData: ‘percentage‘,
    overrideEvents : [‘onSelectError‘],
    formData: {‘typeId‘:‘1‘, ‘typeName‘:‘2‘,‘zFileName‘:$("#exp1").val(),‘id‘:‘${tEdasFlowApprove.id}‘,‘fileId‘:$("#fileId").val()},
    swf:‘${ctxStatic}/uploadify/uploadify.swf‘,
    uploader:‘${ctx}/flow/approve/tEdasFlowApprove/addFile;JSESSIONID=<shiro:principal property="sessionid"/>‘,
    onFallback : function() {//檢測FLASH失敗調用
        alert("您未安裝FLASH控件，無法上傳圖片！請安裝FLASH控件後再試。");
    },
    onSelectError : uploadify_onSelectError,
    onUploadSuccess : function(file, data, response) {
        $(‘#‘ + file.id).find(‘.data‘).html(‘上傳完畢‘);
        data = eval(‘(‘+data+‘)‘);
        fileId = data.fileId + ",";
        var old_val = $(‘#fileId‘).val();
        $(‘#fileId‘).val(old_val + fileId);
    },
    onQueueComplete : function(queueData) {
        var fileId = $("#fileId").val();
        if((fileId!=(""))&&(fileId.substring(fileId.length-1)==(","))){
            $("#fileId").val(fileId.substring(0, fileId.length-1));
        }
        $("#inputForm").submit();

    },
    onUploadError : function(file, errorCode, errorMsg, errorString) {
        $.messager.show({
            title:‘我的消息‘,
            msg: errorString,
            timeout:5000,
            showType:‘slide‘
        });
    }
});


});


function save（）{

　　$("#edit_file_upload").uploadify("settings", "formData", {‘zFileName‘:$("input[name=exp1]").val()});
　　$(‘#edit_file_upload‘).uploadify(‘upload‘,‘*‘);

}


jsp

<input type="file" name="edit_file_upload" id="edit_file_upload" multiple="multiple"  />
<div id ="edit_file_upload-queue"></div>
<div id="edit_form_upload"></div>

uploadify附件上傳 傳參