* @return
*/
public String uploadFile() {
byte[] encryptedDataSecretKey = null; // 用来保存加密后的DES密钥
Users user = new Users();
user.setUserId((int) userId);
user = userservice.find(user);
long memoryId = user.getMemoryId();
HdfsMemory memory = fileservice.getMemory((int) memoryId);
int free = memory.getTotalmemory() - memory.getMemoryused();
/*
* 将上传的临时文件uploadFile复制到dst文件。
*/