java http 返回文件流_（java）如何同时返回文件流和状态信息

[Java] 纯文本查看 复制代码/**

* 输出创建的Excel

* [url=home.php?mod=space&uid=952169]@Param[/url] fileName

* @param wb

* @param resp

*/

public static void respOutPutExcel(String fileName, XSSFWorkbook wb, HttpServletResponse resp) {

ByteArrayOutputStream os = new ByteArrayOutputStream();

BufferedInputStream bis = null;

BufferedOutputStream bos = null;

try {

wb.write(os);

System.out.println("导出excel成功");

byte[] content = os.toByteArray();

InputStream is = new ByteArrayInputStream(content);

// 设置response参数，可以打开下载页面

resp.reset();

resp.setContentType("application/vnd.ms-excel;charset=utf-8");

resp.setHeader("Access-Control-Allow-Origin", "*");

resp.setHeader("Content-Disposition",

"attachment;filename=" + new String((fileName).getBytes(), "iso-8859-1"));

ServletOutputStream out = resp.getOutputStream();

bis = new BufferedInputStream(is);

bos = new BufferedOutputStream(out);

byte[] buff = new byte[2048];

int bytesRead;

// Simple read/write loop.

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

bos.write(buff, 0, bytesRead);

}

} catch (FileNotFoundException ex) {

ex.printStackTrace();

} catch (IOException ex) {

ex.printStackTrace();

}finally {

try {

if (bis != null){

bis.close();

}

if (bos != null){

bos.close();

}

} catch (IOException e) {

e.printStackTrace();

}

}

}