阿里外包也是这么难的吗？
要求外语流畅，多线程会玩，我是真的费劲。public class DownFile {
public HttpServletResponse download(String path,String name, 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="";
if(name!=null&&name.length()!=0){
filename = name;
}else{
filename = file.getName();
}
// 取得文件的后缀名。
String ext = filename.substring(filename.lastIndexOf(".") + 1).toUpperCase();
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte;
fis.read(buffer);
fis.close();
// 清空response
response.reset();
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes(),"iso-8859-1"));
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/octet-stream");
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return response;
}
try {
long sd = new Date().getTime();
String filename = request.getRealPath("/") + "表名" + DateUtil.format(new Date(), "yyyyMMddhhmmss") + ".xls";
FileOutputStream fout = new FileOutputStream(filename);
wb.write(fout);
fout.close();
long ed = new Date().getTime();
System.out.println("---write---" + (ed - sd) + "毫秒，共计" + (ed - sd) / 1000 + "秒");
DownFile DownFile = new DownFile();
DownFile.download(filename, "", ServletActionContext.getResponse());
File file = new File(filename);
file.delete();
long aed = new Date().getTime();
System.out.println("---表名---" + (aed - asd) + "毫秒，共计" + (aed - asd) / 1000 + "秒");
} catch (Exception e) {
e.printStackTrace();
}
看项目的吧
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