@RequestMapping(value = "/weChatDown/{fileId}")
public ResponseEntity<byte[]> weChatFiledownload(@PathVariable("fileId") String fileId, HttpServletResponse response, HttpServletRequest request) throws Exception {
DsCmsFile dsCmsFile = fileService.get(fileId);
if (dsCmsFile != null) {
String filePath = dsCmsFile.getFileUrl();
String fileName = dsCmsFile.getFileName();
File file = new File(filePath);
long size = file.length();
//为了解决中文名称乱码问题 这里是设置文件下载后的名称
fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");
response.reset();
response.setHeader("Accept-Ranges", "bytes");
//设置文件下载是以附件的形式下载
response.setHeader("Content-disposition", String.format("attachment; filename=\"%s\"", fileName));
response.addHeader("Content-Length", String.valueOf(size));
ServletOutputStream sos = response.getOutputStream();
FileInputStream in = new FileInputStream(file);
BufferedOutputStream outputStream = new BufferedOutputStream(sos);
byte[] b = new byte[1024];
int i = 0;
while ((i = in.read(b)) > 0) {
outputStream.write(b, 0, i);
}
outputStream.flush();
sos.close();
outputStream.close();
in.close();
}
return new ResponseEntity<>(HttpStatus.OK);
}
