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1package com.app.utils;
2
3import javax.mail.Message;
4import javax.mail.MessagingException;
5import javax.mail.Session;
6import javax.mail.Transport;
7import javax.mail.internet.AddressException;
8import javax.mail.internet.InternetAddress;
9import javax.mail.internet.MimeMessage;
10import java.util.Properties;
11
12
13public class Mail {
14
15    private static String USER_NAME = "yourcarserviceapp";  // GMail user name (just the part before "@gmail.com")
16    private static String PASSWORD = "asdfghjkl123456789"; // GMail password
17
18
19    public static void sendFromGMail(String[] to, String subject, String body) {
20        Properties props = System.getProperties();
21        String host = "smtp.gmail.com";
22        setProps(props, host);
23
24        Session session = Session.getDefaultInstance(props);
25        MimeMessage message = new MimeMessage(session);
26
27        try {
28            sendMultipleRecipent(to, subject, body, host, session, message);
29        }
30        catch (AddressException ae) {
31            ae.printStackTrace();
32        }
33        catch (MessagingException me) {
34            me.printStackTrace();
35        }
36    }
37
38    public static void sendFromGMail(String to, String subject, String body){
39        Properties props = System.getProperties();
40        String host = "smtp.gmail.com";
41        setProps(props, host);
42
43        Session session = Session.getDefaultInstance(props);
44        MimeMessage message = new MimeMessage(session);
45
46        try {
47            sendSingleRecipent(to, subject, body, host, session, message);
48        }
49        catch (AddressException ae) {
50            ae.printStackTrace();
51        }
52        catch (MessagingException me) {
53            me.printStackTrace();
54        }
55    }
56
57    private static void sendSingleRecipent(String to, String subject, String body, String host, Session session, MimeMessage message) throws MessagingException {
58        message.setFrom(new InternetAddress(USER_NAME));
59        InternetAddress[] toAddress = new InternetAddress[1];
60
61
62            toAddress[0] = new InternetAddress(to);
63
64
65
66            message.addRecipient(Message.RecipientType.TO, toAddress[0]);
67
68
69        message.setSubject(subject);
70        message.setText(body);
71        Transport transport = session.getTransport("smtp");
72        transport.connect(host, USER_NAME, PASSWORD);
73        transport.sendMessage(message, message.getAllRecipients());
74        transport.close();
75    }
76
77    private static void sendMultipleRecipent(String[] to, String subject, String body, String host, Session session, MimeMessage message) throws MessagingException {
78        message.setFrom(new InternetAddress(USER_NAME));
79        InternetAddress[] toAddress = new InternetAddress[to.length];
80
81        // To get the array of addresses
82        for( int i = 0; i < to.length; i++ ) {
83            toAddress[i] = new InternetAddress(to[i]);
84        }
85
86        for( int i = 0; i < toAddress.length; i++) {
87            message.addRecipient(Message.RecipientType.TO, toAddress[i]);
88        }
89
90        message.setSubject(subject);
91        message.setText(body);
92        Transport transport = session.getTransport("smtp");
93        transport.connect(host, USER_NAME, PASSWORD);
94        transport.sendMessage(message, message.getAllRecipients());
95        transport.close();
96    }
97
98    private static void setProps(Properties props, String host) {
99        props.put("mail.smtp.starttls.enable", "true");
100        props.put("mail.smtp.host", host);
101        props.put("mail.smtp.user", USER_NAME);
102        props.put("mail.smtp.password", PASSWORD);
103        props.put("mail.smtp.port", "587");
104        props.put("mail.smtp.auth", "true");
105    }
106}