无法自动连接 org.springframework.mail.javamail.JavaMailSender

尝试运行应用程序时遇到以下问题。已经调试了所有内容，但仍然一无所获。

IDE正在找到没有任何问题的bean，所以我对这里发生的事情感到非常困惑。

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailManager': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.testmail.app.service.implement.CustomMManagerService.setMailSender(org.springframework.mail.javamail.JavaMailSender); nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.springframework.mail.javamail.JavaMailSender] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}

我的豆子代位于以下文件中：

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.testmail.app")
public class WebConfig extends WebMvcConfigurerAdapter {
 //CODE CODE CODE

    @Bean
    public JavaMailSenderImpl mailSender() {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();

        javaMailSender.setProtocol("SMTP");
        javaMailSender.setHost("127.0.0.1");
        javaMailSender.setPort(25);

        return javaMailSender;
    }

// CODE CODE CODE
}

CustomMManager 的代码：

public interface CustomMManager extends Serializable {
    void sendMail(String mailFrom,String mailTo,String subject,String mailBody);
}

最后是 CustomMManagerService 的代码：

@Service("mailManager")
public class CustomMManagerService implements CustomMManager {
    private JavaMailSender mailSender;

    @Autowired
    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }

    @Override
    public void sendMail(final String mailFrom, final String mailTo, final String subject, final String mailBody) {
        try {
            mailSender.send(new MimeMessagePreparator() {
                public void prepare(MimeMessage mimeMessage)
                        throws Exception {
                    MimeMessageHelper message = new MimeMessageHelper(mimeMessage,
                            false, "UTF-8");
                    message.setFrom(mailFrom);
                    message.addTo(mailTo);
                    message.setSubject(subject);
                    message.setText(mailBody, true);
                }
            });
        } catch (MailSendException e) {
            // your codes;
        }
    }
}

非常感谢您的帮助。