Сервис отправки почты

src/main/java/ru/ldeloff/service/DefaultEmailService.java

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+package ru.ldeloff.service;
+
+import org.springframework.core.io.FileSystemResource;
+import org.springframework.mail.SimpleMailMessage;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.stereotype.Service;
+import org.springframework.util.ResourceUtils;
+
+import javax.mail.MessagingException;
+import javax.mail.internet.MimeMessage;
+import java.io.FileNotFoundException;
+
+@Service
+public class DefaultEmailService implements EmailService {
+
+    public final JavaMailSender emailSender;
+
+    public DefaultEmailService(JavaMailSender emailSender) {
+        this.emailSender = emailSender;
+    }
+
+    @Override
+    public void sendSimpleEmail(String toAddress, String subject, String message) {
+        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
+        simpleMailMessage.setTo(toAddress);
+        simpleMailMessage.setSubject(subject);
+        simpleMailMessage.setText(message);
+        emailSender.send(simpleMailMessage);
+    }
+
+    @Override
+    public void sendEmailWithAttachment(String toAddress, String subject, String message, String attachment) throws MessagingException, FileNotFoundException {
+        MimeMessage mimeMessage = emailSender.createMimeMessage();
+        MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true);
+        messageHelper.setTo(toAddress);
+        messageHelper.setSubject(subject);
+        messageHelper.setText(message);
+        FileSystemResource file = new FileSystemResource(ResourceUtils.getFile(attachment));
+        messageHelper.addAttachment("Purchase Order", file);
+        emailSender.send(mimeMessage);
+    }
+}

src/main/java/ru/ldeloff/service/EmailService.java

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+package ru.ldeloff.service;
+
+import javax.mail.MessagingException;
+import java.io.FileNotFoundException;
+
+public interface EmailService {
+    void sendSimpleEmail(final String toAddress, final String subject, final String message);
+    void sendEmailWithAttachment(final String toAddress, final String subject, final String message, final String attachment) throws MessagingException, FileNotFoundException;
+}