Java Mail Gmail

Author: giaunv

java-examples/javamail-gmail/.gitignore

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+.idea
+target
+*.iml

java-examples/javamail-gmail/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.hellokoding.mail</groupId>
+    <artifactId>sendingmail-gmailsmtpserver-javamailapi</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <exec.mainClass>com.hellokoding.mail.Main</exec.mainClass>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.sun.mail</groupId>
+            <artifactId>javax.mail</artifactId>
+            <version>1.6.0</version>
+        </dependency>
+    </dependencies>
+</project>

java-examples/javamail-gmail/src/main/java/com/hellokoding/mail/Main.java

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+package com.hellokoding.mail;
+
+public class Main {
+    private static final String SMTP_SERVER_HOST = "smtp.gmail.com";
+    private static final String SMTP_SERVER_PORT = "587";
+    private static final String SUBJECT = "Sending mail with Gmail SMTP and Java Mail";
+    private static final String BODY = "Hi,<br><br>This is a programmatic email.";
+
+    public static void main(String[] args) {
+        final String FROM_USER_EMAIL = args[0];
+        final String FROM_USER_FULLNAME = args[1];
+        final String FROM_USER_ACCESSTOKEN = args[2];
+        final String TO_USER_EMAIL = args[3];
+
+        new SendingMailThroughGmailSMTPServer().sendMail(SMTP_SERVER_HOST, SMTP_SERVER_PORT, FROM_USER_EMAIL, FROM_USER_ACCESSTOKEN, FROM_USER_EMAIL, FROM_USER_FULLNAME, TO_USER_EMAIL, SUBJECT, BODY);
+    }
+}

java-examples/javamail-gmail/src/main/java/com/hellokoding/mail/SendingMailThroughGmailSMTPServer.java

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+package com.hellokoding.mail;
+
+
+import com.sun.mail.smtp.SMTPTransport;
+import com.sun.mail.util.BASE64EncoderStream;
+
+import javax.mail.Message;
+import javax.mail.Session;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+import java.util.Properties;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class SendingMailThroughGmailSMTPServer {
+    void sendMail(String smtpServerHost, String smtpServerPort,  String smtpUserName, String smtpUserAccessToken, String fromUserEmail, String fromUserFullName, String toEmail, String subject, String body) {
+        try {
+            Properties props = System.getProperties();
+            props.put("mail.transport.protocol", "smtp");
+            props.put("mail.smtp.port", smtpServerPort);
+            props.put("mail.smtp.starttls.enable", "true");
+
+            Session session = Session.getDefaultInstance(props);
+            session.setDebug(true);
+
+            MimeMessage msg = new MimeMessage(session);
+            msg.setFrom(new InternetAddress(fromUserEmail, fromUserFullName));
+            msg.setRecipient(Message.RecipientType.TO, new InternetAddress(toEmail));
+            msg.setSubject(subject);
+            msg.setContent(body, "text/html");
+
+            SMTPTransport transport = new SMTPTransport(session, null);
+            transport.connect(smtpServerHost, smtpUserName, null);
+            transport.issueCommand("AUTH XOAUTH2 " + new String(BASE64EncoderStream.encode(String.format("user=%s\1auth=Bearer %s\1\1", smtpUserName, smtpUserAccessToken).getBytes())), 235);
+            transport.sendMessage(msg, msg.getAllRecipients());
+        } catch (Exception ex) {
+            Logger.getLogger(this.getClass().getName()).log(Level.SEVERE, ex.getMessage(), ex);
+        }
+    }
+}