JXT 导出数据到EXCEL

1.
public class ExportExcel {

/**
* @param List封装着Object[]的列表         
* @param title每个sheet里的标题       */
private final static Logger log = Logger.getLogger(ExportExcel.class.getName());

public static InputStream getExcelInputStream(List<String[]> list, String[] title) {
ByteArrayOutputStream out = new ByteArrayOutputStream();// 将OutputStream转化为InputStream
writeExcel(out, list, title);
return new ByteArrayInputStream(out.toByteArray());
}

public static void writeExcel(OutputStream out, List<String[]> list, String[] title) {
try {
WritableWorkbook workbook = Workbook.createWorkbook(out);
WritableSheet ws = workbook.createSheet("sheet 1", 0);
int rowNum = 0; // 要写的行,第一行是从0开始，以此类推
if (title != null) {
putRow(ws, 0, title);
rowNum = 1;
}
for (int i = 0; i < list.size(); i++, rowNum++) { //数据写入Excel
Object[] cells = (Object[]) list.get(i);
putRow(ws, rowNum, cells);
}
workbook.write();
workbook.close(); 
} catch (RowsExceededException e) {
log.error(e);
} catch (WriteException e) {
log.error(e);
} catch (IOException e) {
log.error(e);
}
}

private static void putRow(WritableSheet ws, int rowNum, Object[] cells)
throws RowsExceededException, WriteException {
for (int j = 0; j < cells.length; j++) {
Label cell = new Label(j, rowNum, "" + cells[j]);
ws.addCell(cell);
}
}

}

2.    SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
excelName = "Products_Export_"+ df.format(new java.util.Date()) + ".xls";//导出Excel文件名
    List<InventoryTotalVO>  rowList=pageBean.getRows();//导出的记录
    List<String[]>  extelDataList=new ArrayList<String[]>();
    for(int i=0;i<rowList.size();i++){
    extelDataList.add(data);//要写入Excel的数据
    }
String[] title = { };//Excel标题
excelStream=ExportExcel.getExcelInputStream(extelDataList,title);

3>
    <result name="excel" type="stream">  
                 <param name="contentType">  
                     application/vnd.ms-excel  
                </param>  
                <param name="inputName">excelStream</param>  
               <param name="contentDisposition">  
                     attachment;filename="${excelName}"
                 </param>  
                <param name="bufferSize">1024</param>  
           </result> 
<param name="inputPath">\download</param><!--下载文件的保存路径 -->
<param name="maxRows">1000</param><!-- 下载文件的行数-->
</action>