/**
* 文件下载
* @param name
* @param response
*/
//通过流写回数据,不需要返回值
//前端提交了name这里得接收,输出流得用response获得
@GetMapping("/download")
public void download(String name, HttpServletResponse response){
try {
//输入流,通过输入流读取文件内容
FileInputStream fileInputStream = new FileInputStream(new File(basePath + name));
//输出流,通过输出流将文件写回浏览器
ServletOutputStream outputStream = response.getOutputStream();
//设置响应的文件类型
response.setContentType("image/jpeg");
int len = 0;
byte[] bytes = new byte[1024];
while ((len = fileInputStream.read(bytes)) != -1){
outputStream.write(bytes,0,len);
outputStream.flush();
}
//关闭资源
outputStream.close();
fileInputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}