javascript EXCEL 操作类代码

ExcelOperation = function(){ 
this.oXL = null; 
this.oWB = null; 
this.oSheet = null; 
this.xlsRowCount = 0; //总记录数 
this.excelFileName = null; 
this.currentRow = 2; //当前行 
/** 
* 得到EXCEL表格中的总记录数 
*/ 
this.getRowCount = function(){ 
//oSheet.Range("C1").Sort(oSheet.Columns("C"),xlAscending); 
var rowsCount = this.oSheet.UsedRange.Cells.Rows.Count; 
return rowsCount; 
} 
/** 
* 按指定的列进行排序 
* @param column 列名，如"C" 
*/ 
this.sort = function(column){ 
var xlAscending = 1; 
var xlYes = 1; 
var xlSortRows=1; 
var xlPinYin= 1; 
var xlSortNormal =1; 
this.oSheet.UsedRange.Sort(this.oSheet.Columns(column), 
xlAscending,null,null,null,null,null,xlYes,null,null, 
xlSortRows,xlPinYin,xlSortNormal,null,null); 
} 
/** 
* 打开一个EXCEL 
*/ 
this.openExcel = function(fileName){ 
this.fileName = fileName; 
if(this.fileName){ 
try{ 
this.oXL = new ActiveXObject("Excel.application"); 
this.oWB = this.oXL.Workbooks.open(fileName); 
//"e:\\join.xls" 
this.oWB.worksheets(1).select(); 
this.oSheet = this.oWB.ActiveSheet; 
this.xlsRowCount = this.getRowCount(); 
}catch(e){ 
if(this.oXL) 
this.closeExcel(); 
Ext.Msg.show({ 
title : '错误提示', 
msg : '请检查您的系统以下几方面的设置：1,'+ 
'是否正确安装了OFFICE中的EXCEL；2,正确设 
置您的IE浏览器('+ 
'工具->internet选项->安全->internet->自定 
义级别->'+ 
'启用“对没有标记为安全的ActiveX控件...” 
);3,数据文件是否被删除', 
buttons : Ext.Msg.OK, 
icon : Ext.Msg.ERROR 
}); 
return false; 
} 
}else{ 
Ext.Msg.show({ 
title : '错误提示', 
msg : '请选择要导入的源数据文件!', 
buttons : Ext.Msg.OK, 
icon : Ext.Msg.ERROR 
}); 
return false; 
} 
return this.oSheet; 
} 
/** 
* 读取指定单元格的数据， 
*/ 
this.readData = function(row,col){ 
var data = this.oSheet.Cells(row,col).Value; 
if(typeof data == 'undefined') 
return ''; 
else 
return data; 
} 
/** 
* 向指定单元格写入数据 
*/ 
this.writeData = function(row,col,data){ 
this.oSheet.Cells(row,col) = data 
} 
/** 
* 关闭EXCEL 
*/ 
this.closeExcel = function(){ 
this.oXL.DisplayAlerts = false; 
this.oXL.Quit(); 
this.oXL = null; 
this.oWB=null; 
this.oSheet=null; 
CollectGarbage(); 
} 
}