使用Java TimerTask的Spring @autowired注釋不起作用

Question

自動裝配注釋在Java計時器任務中不起作用。 請找到我的代碼並提供解決方案。

public class MailScheduleTimer extends TimerTask{
    @Autowired
    MailService mailService;

    @Autowired
    UserAccountRepository userAccountRepository;

    Logger logger = Logger.getLogger(MailScheduleTimer.class);

    @Override
    public void run() {
        try {
            List<UserAccount> userAccounts = userAccountRepository
                    .getUserAccounts();
            for (UserAccount userAccount : userAccounts) {
                if (userAccount.getUserRole().getName()
                        .equals(RolesConstant.USER_ROLE)
                        && userAccount.getMailStatus().equals("N")) {
                    mailService.sendMail(userAccount.getName(),
                            userAccount.getUserId(), "profile",
                            userAccount.getName());
                    userAccount.setMailStatus("Y");
                    userAccountRepository.saveAndFlush(userAccount);
                }
            }
        } catch (Exception e) {
            logger.error("Unable to Send Mail..." + e);
        }
    }
}

Answer 1

將此代碼添加到您的spring beans配置文件中

<context:component-scan basePackage="Your base package name"/>
<context:annotation-config/>

Answer 2

通過將@Component添加到MailScheduleTimer類中，只需使MailScheduleTimer成為bean：

@Component
    public class MailScheduleTimer extends TimerTask{

    @Autowired
    MailService mailService;

    @Autowired
    UserAccountRepository userAccountRepository;

    Logger logger = Logger.getLogger(MailScheduleTimer.class);

    @Override
    public void run() {
        try {
            List<UserAccount> userAccounts = userAccountRepository
                    .getUserAccounts();
            for (UserAccount userAccount : userAccounts) {
                if (userAccount.getUserRole().getName()
                        .equals(RolesConstant.USER_ROLE)
                        && userAccount.getMailStatus().equals("N")) {
                    mailService.sendMail(userAccount.getName(),
                            userAccount.getUserId(), "profile",
                            userAccount.getName());
                    userAccount.setMailStatus("Y");
                    userAccountRepository.saveAndFlush(userAccount);
                }
            }
        } catch (Exception e) {
            logger.error("Unable to Send Mail..." + e);
        }
    }
    }

Answer 3

誰應該調用run方法？ 可能是您需要使用@PostConstruct對其進行注釋或實現InitializingBean接口

順便說說。 保留@Component標簽以及它們在其他答案中告訴您的軟件包掃描。