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wynnteowynnteo
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Bael 7807 (#16400)
* BAEL-7490 read write file in separate thread * Change the to try resources * Update the code to sync with article * Skeleton * Update validation * update send mail * reformat and structure
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‎libraries-io/pom.xml‎

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<artifactId>spring-web</artifactId>
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<version>${spring.version}</version>
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</dependency>
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<dependency>
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<groupId>org.simplejavamail</groupId>
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<artifactId>simple-java-mail</artifactId>
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<version>${simplejavamail.version}</version>
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</dependency>
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</dependencies>
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<build>
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<zip4j.version>2.11.5</zip4j.version>
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<opencsv.version>5.9</opencsv.version>
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<spring.version>6.1.4</spring.version>
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<simplejavamail.version>8.7.0</simplejavamail.version>
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</properties>
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</project>

‎libraries-io/src/main/java/com/baeldung/java/io/simplemail/SimpleMailExample.java‎

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package com.baeldung.java.io.simplemail;
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import java.util.ArrayList;
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import java.util.List;
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import org.simplejavamail.api.email.AttachmentResource;
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import org.simplejavamail.api.email.Email;
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import org.simplejavamail.api.email.Recipient;
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import org.simplejavamail.api.mailer.Mailer;
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import org.simplejavamail.email.EmailBuilder;
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import org.simplejavamail.mailer.MailerBuilder;
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import org.simplejavamail.MailException;
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import jakarta.activation.FileDataSource;
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import jakarta.mail.Message;
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public class SimpleMailExample {
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public static void sendPlainTextEmail() {
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with Plain Text!")
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.withPlainText("This is a test email sent using SJM.")
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.buildEmail();
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sendEmail(email);
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}
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public static void sendPlainTextEmailToMultipleRecipient() {
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient1@example.com, recipient2@example.com, recipient3@example.com")
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.withSubject("Email with Plain Text!")
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.withPlainText("This is a test email sent using SJM to multiple recipients.")
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.buildEmail();
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sendEmail(email);
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}
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public static void sendEmailWithAttachment() {
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with Plain Text and Attachment!")
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.withPlainText("This is a test email with attachment sent using SJM.")
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.withAttachment("important_document.pdf", new FileDataSource("path/to/important_document.pdf"))
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.buildEmail();
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sendEmail(email);
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}
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public static void sendEmailWithMultipleAttachment() {
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List<AttachmentResource> arList = new ArrayList<>();
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arList.add(new AttachmentResource("important_document.pdf", new FileDataSource("path/to/important_document.pdf")));
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arList.add(new AttachmentResource("company_logo.png", new FileDataSource("path/to/company_logo.png")));
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with Plain Text and multiple Attachments!")
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.withPlainText("This is a test email with attachment sent using SJM.")
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.withAttachments(arList)
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.buildEmail();
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sendEmail(email);
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}
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public static void sendHTMLTextWithEmbeddedImageEmail() {
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String htmlContent = "<h1>This is an email with HTML content</h1>" + "<p>This email body contains additional information and formatting.</p>" +
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"<img src=\"cid:company_logo\" alt=\"Company Logo\">";
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with HTML and Embedded Image!")
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.withHTMLText(htmlContent)
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.withEmbeddedImage("company_logo", new FileDataSource("path/to/company_logo.png"))
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.buildEmail();
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sendEmail(email);
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}
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public static void replyingToEmail(Email receivedEmail) {
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EmailBuilder.replyingTo(receivedEmail)
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.from("sender@example.com")
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.prependText("This is a Reply Email. Original email included below:")
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.buildEmail();
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}
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public static void forwardingEmail(Email receivedEmail) {
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Email email = EmailBuilder.forwarding(receivedEmail)
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.from("sender@example.com")
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.prependText("This is an Forward Email. See below email:")
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.buildEmail();
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}
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public static void handleExceptionWhenSendingEmail() {
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try {
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sendPlainTextEmail();
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System.out.println("Email sent successfully!");
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} catch (MailException e) {
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System.err.println("Error: " + e.getMessage());
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}
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}
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public static void setCustomHeaderWhenSendingEmail() {
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with Custom Header")
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.withPlainText("This is an important message.")
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.withHeader("X-Priority", "1")
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.buildEmail();
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sendEmail(email);
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}
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private static void sendEmailWithDeliveryReadRecipient() {
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Email email = EmailBuilder.startingBlank()
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.from("sender@example.com")
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.to("recipient@example.com")
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.withSubject("Email with Delivery/Read Receipt Configured!")
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.withPlainText("This is an email sending with delivery/read receipt.")
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.withDispositionNotificationTo(new Recipient("name", "address@domain.com", Message.RecipientType.TO))
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.withReturnReceiptTo(new Recipient("name", "address@domain.com", Message.RecipientType.TO))
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.buildEmail();
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sendEmail(email);
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}
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private static void sendEmail(Email email) {
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Mailer mailer = MailerBuilder.withSMTPServer("smtp.example.com", 25, "username", "password")
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.withMaximumEmailSize(1024 * 1024 * 5) // 5 Megabytes
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.buildMailer();
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boolean validate = mailer.validate(email);
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if (validate) {
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mailer.sendMail(email);
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} else {
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System.out.println("Invalid email address.");
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}
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}
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}

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