Java 文件上传/下载

一、下载

冲数据库中下载文件

//从数据库中读取的二进制文件流
byte[] fileData = fileInfo.getFILE_DATA();
response.reset();
//设置下载的文件名（支持中文）
response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileInfo.getFILE_NAME().getBytes("gbk"),"iso-8859-1"));
InputStream inS = new BufferedInputStream(new ByteArrayInputStream(fileData));
response.setContentType("application/x-msdownload");
OutputStream outS = new BufferedOutputStream(response.getOutputStream());
byte[] b = new byte[1000];
int len;
while ((len = inS.read(b)) > 0)
   outS.write(b, 0, len);
outS.flush();
inS.close();