Java：在服务器上下文外部下载文件

在这里我找到了答案，

 response.setContentType("application/msword"); response.setHeader("Content-Disposition","attachment;filename=downloadname.doc"); File file=new File("d:\test.doc"); InputStream is=new FileInputStream(file); int read=0; byte[] bytes = new byte[BYTES_DOWNLOAD]; OutputStream os = response.getOutputStream(); while((read = is.read(bytes))!= -1){  os.write(bytes, 0, read); } os.flush(); os.close();