spring - @Autowired 实体变空

Question

@Component
public class TempTry implements CommandLineRunner{

@Autowired
TokenRepository tkeRepo;

@Parameter(names = { "--email", "-e" })
String email;

static final Logger logger = LoggerFactory.getLogger(TempTry.class);

@Override
public void run(String... args) throws Exception {
    logger.info("ApplicationStartupRunner run method Started !!");
    TempTry main = new TempTry();
    JCommander.newBuilder().addObject(main).build().parse(args);
    main.runtask();
}

public void runtask() {

    LocalDateTime expiryTime = LocalDateTime.now().plusDays(1);
    String uuid = UUID.randomUUID().toString();
    TokenEntity tknEntity = new TokenEntity();

    tknEntity.setEmailId(email);
    tknEntity.setExpiryTime(DateUtils.asDate(expiryTime));
    tknEntity.setStatus(ResetPasswordStatus.ACTIVE);
    tknEntity.setToken(uuid);

    tkeRepo.save(tknEntity);

    String fromString = UUID.nameUUIDFromBytes("SomeString".getBytes()).toString();
    System.out.println("For email " + mail + " UUID=" + uuid + " is stored at time " + new Date());
    System.out.println("UUID generated from String is " + fromString);
}
}

我将运行配置设置为-e dhanrajtijare@gmail.com ..按预期获取电子邮件值。我的问题在于tkeRepo.save(tknEntity); tkeRepo 为空

Answer 1

这里

 TempTry main = new TempTry();

如果您自己创建实例，您希望@Autowire如何工作？

到那时，您当前的实例似乎在应用程序上下文中，所以

@Override
public void run(String... args) throws Exception {
    logger.info("ApplicationStartupRunner run method Started !!");

    JCommander.newBuilder().addObject(this).build().parse(args);
    runtask();
}

我搁置了这样一个事实，即恕我直言，将 JCommander 与 Spring CLI 混合使用是很糟糕的——使用一个或另一个。