08 - Spring Boot Email

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
</dependency>

spring.mail.host=smtp.gmail.com
spring.mail.port=587
spring.mail.username=your-email@gmail.com
spring.mail.password=your-app-password
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true

java

import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.stereotype.Service;
import jakarta.mail.MessagingException;
import jakarta.mail.internet.MimeMessage;

@Service
public class EmailService {
    private final JavaMailSender mailSender;

    public EmailService(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }

    // Gửi email đơn giản
    public void sendSimpleEmail(String to, String subject, String text) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setTo(to);
        message.setSubject(subject);
        message.setText(text);
        mailSender.send(message);
    }
}

java

@RestController
@RequestMapping("/email")
public class EmailController {
    private final EmailService emailService;

    public EmailController(EmailService emailService) {
        this.emailService = emailService;
    }

    @GetMapping("/send")
    public String sendEmail() {
        emailService.sendSimpleEmail("receiver@example.com", "Test Email", "Đây là nội dung email gửi từ Spring Boot");
        return "Email đã được gửi thành công!";
    }
}

java

public void sendHtmlEmail(String to, String subject, String htmlContent) throws MessagingException {
    MimeMessage message = mailSender.createMimeMessage();
    MimeMessageHelper helper = new MimeMessageHelper(message, true);
    
    helper.setTo(to);
    helper.setSubject(subject);
    helper.setText(htmlContent, true);
    
    mailSender.send(message);
}

java

String htmlContent = "<h1>Chào bạn!</h1><p>Đây là email gửi từ Spring Boot.</p>";
emailService.sendHtmlEmail("receiver@example.com", "Email HTML", htmlContent);

java

public void sendEmailWithAttachment(String to, String subject, String text, String pathToAttachment) throws MessagingException {
    MimeMessage message = mailSender.createMimeMessage();
    MimeMessageHelper helper = new MimeMessageHelper(message, true);
    
    helper.setTo(to);
    helper.setSubject(subject);
    helper.setText(text);
    
    FileSystemResource file = new FileSystemResource(new File(pathToAttachment));
    helper.addAttachment(file.getFilename(), file);
    
    mailSender.send(message);
}

java

emailService.sendEmailWithAttachment("receiver@example.com", "Email có file đính kèm", "Vui lòng kiểm tra file đính kèm.", "/path/to/file.pdf");

spring.mail.host=smtp.mailtrap.io
spring.mail.port=2525
spring.mail.username=your-mailtrap-username
spring.mail.password=your-mailtrap-password

spring.mail.host=smtp.sendgrid.net
spring.mail.port=587
spring.mail.username=apikey
spring.mail.password=your-sendgrid-api-key