在前端获取上传的excel文件内容

function ReadExcel() {
			var tempStr = "";
			//得到文件路径的值
			var filePath = document.getElementById("upfile").value;
			//创建操作EXCEL应用程序的实例
			var oXL = new ActiveXObject("Excel.application");
			//打开指定路径的excel文件
			var oWB = oXL.Workbooks.open(filePath);
			oWB.worksheets(1).select();
			var oSheet = oWB.ActiveSheet;
			var nRows = oSheet.usedrange.rows.count;
			var nColumns = oSheet.usedrange.columns.count;
			for(var i = 1; i < nRows; i++) {
				for(var j = 0; j < nColumns; j++) {
					if(oSheet.Cells(i + 1, j + 1).value == undefined) {
						console.log(" ");
					} else {
						console.log(oSheet.Cells(i + 1, j + 1).value);
					}
				}
			}
			//退出操作excel的实例对象
			oXL.Application.Quit();
			//手动调用垃圾收集器
			CollectGarbage();
		}