JAVA使用POI根据模版导出EXCEL

//excel模板路径
File fi=new File(basePath+templetName);
POIFSFileSystem fs = new POIFSFileSystem(new FileInputStream(fi));
//读取excel模板
HSSFWorkbook wb = new HSSFWorkbook(fs);
//读取了模板内所有sheet内容
HSSFSheet sheet = wb.getSheetAt(0);
//在相应的单元格进行赋值
HSSFCell cell = sheet.getRow(1).getCell(0);
cell.setCellValue(XX);

创建行设置样式，创建单元格，设置单元格样式

sheet.shiftRows(startRow, startRow+1, 1,true,false);
sheet.createRow(startRow);
sheet.getRow(startRow).setRowStyle(rowstyle);
for (int j = 0; j < 9; j++) {
sheet.getRow(startRow).createCell(j);
}
HSSFCell temp1 = sheet.getRow(startRow).getCell(0);
temp1.setCellValue(1);
temp1.setCellStyle(style);
输出

//修改模板内容导出新模板
filename =filename+DateUtil.getMillisTime().toString();
FileOutputStream out = new FileOutputStream("F:/"+filename+".xls");
wb.write(out);
out.close();
out.flush();下载
private void download(String path, HttpServletResponse response) {
try {
// path是指欲下载的文件的路径。
File file = new File(path);
// 取得文件名。
String filename = file.getName();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/vnd.ms-excel;charset=gb2312");
response.addHeader("Content-Disposition", "attachment;filename="+ new String(filename));
response.addHeader("Content-Length", "" + file.length());
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}