修改excel

　　　　File file = new File("test.xls");
        try {
            Workbook wb = Workbook.getWorkbook(file);
            WritableWorkbook wwb = Workbook.createWorkbook(file,wb);
            WritableSheet ws = (WritableSheet) wwb.getSheet(0);
            
            //设置样式
            WritableFont wf = new WritableFont(WritableFont.createFont("宋体"), 10,WritableFont.NO_BOLD,false);//字体设置
            WritableCellFormat wcfF = new WritableCellFormat(wf);
            wcfF.setAlignment(jxl.format.Alignment.LEFT);//左右对齐
            wcfF.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//上下对齐
            wcfF.setBorder(jxl.format.Border.RIGHT, jxl.format.BorderLineStyle.THIN);//边框
            wcfF.setBorder(jxl.format.Border.BOTTOM, jxl.format.BorderLineStyle.THIN);//边框
            
　　　　　　　
            Label lab = new Label(0, 2, "第一列第三行");
            //可以Label lab = new Label(0, 2, "第一列第三行",wcfF);
            lab.setCellFormat(wcfF);
            
            ws.addCell(lab);
            
            wwb.write();
            wwb.close(); 
        } catch (IOException e) {
            e.printStackTrace();
        } catch (BiffException e) {
            e.printStackTrace();
        } catch (RowsExceededException e) {
            e.printStackTrace();
        } catch (WriteException e) {
            e.printStackTrace();
        } 

金额列设置

　　　　　　　　
//            jxl.write.Number num = new jxl.write.Number(p_x, p_y, 9999);

//            jxl.write.NumberFormat nf = new jxl.write.NumberFormat("#,##0.00"); //千分位与保留小数点后两位设置
//            jxl.write.WritableCellFormat wcfN = new jxl.write.WritableCellFormat(nf); 

　　　　　　　　//其他样式设置
//            wcfN.setAlignment(jxl.format.Alignment.RIGHT);
//            wcfN.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
//            wcfN.setBorder(Border.ALL, BorderLineStyle.THIN, Colour.BLACK);
//            wcfN.setFont(new WritableFont(WritableFont.createFont("宋体"), 10));

//            num.setCellFormat(wcfN);


//            ws.addCell(num);