1 package com.alibaba.otter.canal.adapter.launcher.loader;
2
3 import java.text.SimpleDateFormat;
4 import java.util.*;
5 import javax.mail.*;
6 import javax.mail.internet.*;
7
8 public class JavaxJavaMailClient {
9
10 private static SimpleDateFormat isodate = new SimpleDateFormat("yyyy-MM-dd_HH:mm:ss.SSS");
11
12 public static Session session = null;
13 public static long last_mail_timestamp = 0;
14 public String toEmail = "a@b.c"; // 收件人邮箱
15 public String[] toEmailCC = new String[] {};
16 public String subject = "Canal 问题报警 测试"; // 主题信息
17
18 public void sendMail(String content) {
19
20 if ((System.currentTimeMillis() - last_mail_timestamp) < 300 * 1000)
21 return;
22
23 System.out.println("######################################################");
24 System.out.println("will send alert mail ...");
25 System.out.println("######################################################");
26
27 if (content == null)
28 content = "[空内容]";
29
30 try {
31 if (session == null) {
32 // 初始化默认参数
33 Properties props = new Properties();
34 props.setProperty("mail.transport.protocol", "smtp"); // 邮件发送的协议
35 props.setProperty("mail.host", "smtp.exmail.qq.com");// 发送邮件的服务器
36 props.setProperty("a@b.c");// 发件人名称
37 props.setProperty("a@b.c");// 发件人名称
38 props.setProperty("mail.smtp.auth", "true");
39 props.setProperty("mail.smtp.ssl.enable", "true");
40 props.setProperty("mail.smtp.starttls.enable", "true");
41 props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
42 props.setProperty("mail.smtp.socketFactory.fallback", "false");
43 props.setProperty("mail.smtp.socketFactory.port", "465");
44
45 try {
46 // 获取Session对象
47 session = Session.getInstance(props, null);
48 // 开启后有调试信息
49 // session.setDebug(true);
50 } catch (Exception e) {
51 e.printStackTrace();
52 }
53 }
54
55 // 通过MimeMessage来创建Message接口的子类
56 MimeMessage message = new MimeMessage(session);
57 // 设置发件人第一种方式：直接显示：antladdie <antladdie@163.com>
58 // InternetAddress from = new InternetAddress(sender_username);
59 // 设置发件人第二种方式：发件人信息拼接显示：蚂蚁小哥 <antladdie@163.com>
60 // String formName = MimeUtility.encodeWord("蚂蚁小哥") + " <" + fromEmail + ">";
61 // InternetAddress from = new InternetAddress(formName);
62
63 message.setFrom(new InternetAddress("a@b.c"));
64
65 // 设置收件人：
66 InternetAddress to = new InternetAddress(toEmail);
67 message.setRecipient(Message.RecipientType.TO, to);
68
69 // 设置抄送人(两个)可有可无：
70 if (toEmailCC.length > 0) {
71 ArrayList<InternetAddress> addresses = new ArrayList<InternetAddress>();
72 for (String cc : toEmailCC) {
73 addresses.add(new InternetAddress(cc));
74 }
75 InternetAddress[] addressesArr = (InternetAddress[]) addresses.toArray();
76 message.setRecipients(Message.RecipientType.CC, addressesArr);
77 }
78
79 // 设置密送人 可有可无密送人：
80 // InternetAddress toBCC = new InternetAddress(toEmail);
81 // message.setRecipient(Message.RecipientType.BCC, toBCC);
82
83 // 设置邮件主题
84 message.setSubject(subject + "@" + isodate.format(new Date()));
85
86 // 设置邮件内容,这里我使用html格式，其实也可以使用纯文本；纯文本"text/plain"
87 message.setContent("<h1>你好：<h1> <h3> canal 有问题，错误信息为：<pre>" + content + "</pre></h3>", "text/html;charset=UTF-8");
88
89 // 保存上面设置的邮件内容
90 message.saveChanges();
91
92 // 获取Transport对象
93 Transport transport = session.getTransport();
94 // smtp验证，就是你用来发邮件的邮箱用户名密码（若在之前的properties中指定默认值，这里可以不用再次设置）
95 // transport.connect(null, null, authCode);
96 transport.connect("a@b.c", "password");
97 // 发送邮件
98 transport.sendMessage(message, message.getAllRecipients()); // 发送
99
100 last_mail_timestamp = System.currentTimeMillis();
101
102 } catch (Exception e) {
103 e.printStackTrace();
104 session = null;
105 }
106 }
107
108 // public static void main(String[] args) throws Exception {
109 //
110 // System.out.println("program begin ...");
111 // new JavaxJavaMailClient().sendMail("just test");
112 // System.out.println("program exit.");
113 //
114 // }
115
116 }
