数据以Excel形式导出导服务器，再将文件读取到客户端另存 以HSSFWorkbook方式实现

public void exportExcel(List<P2pInfo> repayXist,HttpServletRequest request,HttpServletResponse response,List<DimNode> listArea,String drxh) throws Exception{

log.info("导出银还款信息Excel文件");

FileOutputStream fos=null;

InputStream is=null;

OutputStream os=null;

BufferedInputStream bis=null;

BufferedOutputStream bos=null;

try {

//当前日期

String dateStr=DateUtil.parseDateFormat(new Date(), "yyyyMMdd");

//银导出文件服务器上存放路径

String ysbPath=getSystemConfigValue(ConstantsApplication.YSB_EXPORT_PATH);

String folderFileName="YSB" + dateStr + "_" + drxh;

String filePath=ysbPath+"/"+folderFileName;

StringOperator.deletePath(filePath);

File file=new File(filePath);

file.delete();

CommonUtils.mkDirs(filePath);

String fileNameHtml=ConstantsApplication.YSB_OPERATION_CODE+"_"+dateStr+"_"+drxh+".xls";

String fileName=filePath+"/"+fileNameHtml;

/*导出到服务器上指定文件：D:\ExportYSB下*/

fos=new FileOutputStream(fileName);

//创建Excel文件对象    H

SSFWorkbook workbook = new HSSFWorkbook();

//创建Sheet对象    HSSFSheet sheet1 = workbook.createSheet();

//设置Excel样式

// 设置列宽

sheet1.setColumnWidth(0, 3000);

sheet1.setColumnWidth(1, 6000);

sheet1.setColumnWidth(2, 3000);

sheet1.setColumnWidth(3, 4000);

sheet1.setColumnWidth(4, 3000);

// 设置标题字体

HSSFFont headfont = workbook.createFont();

headfont.setFontName("黑体");

headfont.setFontHeightInPoints((short) 10);

// 字体大小

headfont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 加粗       // 标题样式

HSSFCellStyle headstyle = workbook.createCellStyle();

headstyle.setFont(headfont);

headstyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 左右居中

headstyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 上下居中

headstyle.setLeftBorderColor(HSSFColor.BLACK.index);

headstyle.setBorderLeft((short) 1);

headstyle.setRightBorderColor(HSSFColor.BLACK.index);

headstyle.setBorderRight((short) 1);

headstyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 设置单元格的边框为粗体

headstyle.setBottomBorderColor(HSSFColor.BLACK.index); // 设置单元格的边框颜色．        /*普通单元格样式*/

HSSFFont font = workbook.createFont();

font.setFontName("宋体");

font.setFontHeightInPoints((short) 10);

// 普通单元格样式

HSSFCellStyle contentStyle = workbook.createCellStyle();

contentStyle.setFont(font);

contentStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 左右居中

contentStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 上下居中

contentStyle.setWrapText(true);

contentStyle.setLeftBorderColor(HSSFColor.BLACK.index);

contentStyle.setBorderLeft((short) 1);

contentStyle.setRightBorderColor(HSSFColor.BLACK.index);

contentStyle.setBorderRight((short) 1);

contentStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 设置单元格的边框为粗体

contentStyle.setBottomBorderColor(HSSFColor.BLACK.index); // 设置单元格的边框颜色．

//创建行对象

HSSFRow row1;

//第一行标题

row1 = sheet1.createRow(0);

row1.createCell(0).setCellValue("帐户名");

row1.createCell(1).setCellValue("银行账号");

row1.createCell(2).setCellValue("收款金额");

row1.createCell(3).setCellValue("资金用途");

row1.createCell(4).setCellValue("商家订单号");

//为标题引入上面设置的样式

row1.getCell(0).setCellStyle(headstyle);

row1.getCell(1).setCellStyle(headstyle);

row1.getCell(2).setCellStyle(headstyle);

row1.getCell(3).setCellStyle(headstyle);

row1.getCell(4).setCellStyle(headstyle);

row1.setHeightInPoints((short)20);

if (null!=repayXist&&repayXist.size()>0) {

int size=repayXist.size()+1;

int j=0;

P2pRepayInfo p2pRepayInfo=null;

DimNode dimNode=null;

for (int i = 1; i < size; i++) {

j=i-1;

p2pRepayInfo=repayXist.get(j);

row1 = sheet1.createRow(i);

row1.createCell(0).setCellValue(p2pRepayInfo.getLoanName());

row1.createCell(1).setCellValue(p2pRepayInfo.getFactRepayAccountNo());      //应还本金+利息

Double dueCI=(p2pRepayInfo.getDuetoCapital()==null?0:p2pRepayInfo.getDuetoCapital())+(p2pRepayInfo.getDuetoInterest()==null?0:p2pRepayInfo.getDuetoInterest());      //已还本金+已还利息

Double paidCI=(p2pRepayInfo.getPaidCapital()==null?0:p2pRepayInfo.getPaidCapital())+(p2pRepayInfo.getPaidInterest()==null?0:p2pRepayInfo.getPaidInterest());

row1.createCell(2).setCellValue(dueCI-paidCI);

row1.createCell(3).setCellValue(" ");      //商家订单号——地区

for (int k = 0; k < listArea.size(); k++) {

dimNode=listArea.get(k);

if (dimNode.getNodeNo().equals(p2pRepayInfo.getAreaNo())) {

row1.createCell(4).setCellValue(dimNode.getNodeName());

break;

}

}

row1.getCell(0).setCellStyle(contentStyle);

row1.getCell(1).setCellStyle(contentStyle);

row1.getCell(2).setCellStyle(contentStyle);

row1.getCell(3).setCellStyle(contentStyle);

row1.getCell(4).setCellStyle(contentStyle);

row1.setHeightInPoints((short)15);

}

}

workbook.write(fos);

/*将保存到服务器上的Excel文件读取到客户端*/

//清空输出流

response.reset();

response.setCharacterEncoding("utf-8");

response.setHeader("Content-disposition", "attachment;filename="+fileNameHtml);

response.setContentType("application/msexcel");

is=new FileInputStream(fileName);

bis=new BufferedInputStream(is);

os=response.getOutputStream();

bos=new BufferedOutputStream(os);

int read=0;

byte[] bytes=new byte[8072];

while ((read=bis.read(bytes,0, bytes.length))!=-1) {

bos.write(bytes, 0, read);

}

bos.flush();

} catch (Exception e) {

e.printStackTrace();

}finally{

try {

fos.close();

os.close();

bos.close();

is.close();

bis.close();

} catch (IOException e) {

log.info("银生宝还款信息文件导出异常……");

e.printStackTrace();

throw new Exception("银生宝还款信息文件导出异常……", e);

}

}

}

//删除目录下文件
    public static void deletePath(String filepath) throws Exception {
     File f = new File(filepath);//定义文件路径         
        if(f.exists() && f.isDirectory()){//判断是文件还是目录  
        //若有则把文件放进数组，并判断是否有下级目录  
        File delFile[]=f.listFiles();  
        int i =f.listFiles().length;  
        for(int j=0;j<i;j++){  
            if(delFile[j].isDirectory()){  
             deletePath(delFile[j].getAbsolutePath());//递归调用del方法并取得子目录路径  
             }  
             delFile[j].delete();//删除文件  
        }
        }
    }

/**   *   * @功能描述：判断文件目录是否存在如果不存在则创建目录

* @param filePath   *

目录路径   *

@return   *

@throws Exception   *

@创建时间   * @author zst   *

@throws APSException   */

public static void mkDirs(String filePath) {

// 判断路径是否存在

File directory = new File(filePath.toString());

if (directory.exists() && directory.isDirectory()) {

}   else {    // 如果不存在则创建目录    directory.mkdirs();   }  }