Introducing Spring Framework

Chapter 13 ■ Adding E-mail and Scheduling Tasks
@Service
public class EmailService {
@Autowired
private MailSender mailSender;
public void send(String from, String to, String subject, String message) {
sendEmail(from,to,subject,message);
}
@Async
public void sendAsync(String from, String to, String subject, String message) {
sendEmail(from,to,subject,message);
}
}
private void sendEmail(String from, String to, String subject, String message){
SimpleMailMessage mailMessage = new SimpleMailMessage();
mailMessage.setFrom(from);
mailMessage.setTo(to);
mailMessage.setSubject(subject);
mailMessage.setText(message);
mailSender.send(mailMessage);
}
Listing 13-5 shows another method named sendAsync, which is actually the same as the send method; the only
difference is that it is annotated with the @Async annotation. This will tell the Spring container to treat this
method asynchronously when it’s called. But how do you tell the Spring container that you are going to use this
Async annotation? Take a look at Listing 13-6, which shows the new namespace you are going to use:
.
Listing 13-6. mydocuments-context.xml
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