一.
@RequestMapping(value = "/download/{filename}")
public void downloadFile(HttpServletRequest request,HttpServletResponse response,
@PathVariable(value = "filename") String filename)
throws IOException {
//获取项目路径
String readPath = request.getServletContext().getRealPath("/");
readPath = readPath.substring(0, readPath.lastIndexOf("\"));
readPath = readPath.substring(0, readPath.lastIndexOf("\"));
//文件绝对路径
String picPath = readPath+File.separator+"pai"+File.separator+"attachmentSimple"+File.separator+"1"+File.separator + filename;
File file = new File(picPath);
if(!file.exists()){
throw new RuntimeException("视频文件不存在！");
}
response.setContentType("application/force-download");// 设置强制下载不打开
response.addHeader("Content-Disposition",
"attachment;fileName=" + filename);// 设置文件名
FileInputStream inputStream = new FileInputStream(file);
ServletOutputStream out = response.getOutputStream();
int b = 0;
byte[] buffer = new byte[1024];
while (b != -1){
out.write(buffer,0,b);
b = inputStream.read(buffer);
}
inputStream.close();
out.close();
out.flush();
}
}
二.
@RequestMapping("download")
public void download(@RequestParam("id") String id,
HttpServletRequest request, HttpServletResponse response){
VideoInfo video = (VideoInfo) videoService.getObjectById(VideoInfo.class, id);
String path = request.getServletContext().getRealPath(video.getRestorePath());
File file = new File(path);
if(!file.exists()){
throw new RuntimeException("视频文件不存在！");
}
String fileName = video.getRestorePath().substring(video.getRestorePath().indexOf(File.separator)+1);
response.setContentType("application/force-download");// 设置强制下载不打开
response.addHeader("Content-Disposition",
"attachment;fileName=" + fileName);// 设置文件名
byte[] buffer = new byte[1024];
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
OutputStream os = response.getOutputStream();
int i = bis.read(buffer);
while (i != -1) {
os.write(buffer, 0, i);
i = bis.read(buffer);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (bis != null) {
try {
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}