JavaMailSender無法注入的問題

在嘗試了重新下載jar包，@AutoWired，@Resource，構造器注入這些情況下都無法成功注入bean

最後通過new後@Bean解決

@Configuration
public class MailConfiguration {
    @Bean
    public JavaMailSenderImpl JavaMailSender(){
        JavaMailSenderImpl mailSender = new JavaMailSenderImpl();
        mailSender.setHost("smtp.qq.com");
        mailSender.setUsername("[email protected]");
        mailSender.setPassword("xxxxxxx");
        return  mailSender;
    }
}