最近项目做一个功能是关于消息推送（站内信、短信、微信、邮件）。现在做的是邮件，我只是用了JavaMail，但是下面的博主写的更加的好，就转载了。
原文：https://blog.csdn.net/qq_32371887/article/details/72821291
(http://blog.csdn.net/imain/article/details/1453677
1：使用JavaMail发送邮件
// 1.创建一个程序与邮件服务器会话对象 Session Properties props = new Properties(); props.setProperty("mail.transport.protocol", "SMTP"); props.setProperty("mail.smtp.host", "smtp.163.com"); props.setProperty("mail.smtp.port", "25"); // 指定验证为true props.setProperty("mail.smtp.auth", "true"); props.setProperty("mail.smtp.timeout","1000"); // 验证账号及密码，密码需要是第三方授权码 Authenticator auth = new Authenticator() { public PasswordAuthentication getPasswordAuthentication({ return new PasswordAuthentication("*******@163.com", "*******"); } }; Session session = Session.getInstance(props, auth); // 2.创建一个Message，它相当于是邮件内容 Message message = new MimeMessage(session); // 设置发送者 message.setFrom(new InternetAddress("*******@163.com")); // 设置发送方式与接收者 message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(email)); // 设置主题 message.setSubject("邮件发送测试"); // 设置内容 message.setContent(emailMsg, "text/html;charset=utf-8"); // 3.创建 Transport用于将邮件发送 Transport.send(message);- 1
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2：我用的是spring框架,spring 封装了一个简单易用的关于邮件发送的工具类JavaMailSenderImpl ,所以可以用JavaMailSenderImpl 来实现邮件发送。
public class MailService { private static final String HOST = "smtp.163.com"; private static final Integer PORT = 25; private static final String USERNAME = "*******@163.com"; private static final String PASSWORD = "*******"; private static final String EMAILFORM = "*******@163.com"; private static JavaMailSenderImpl mailSender = createMailSender(); /** * 邮件发送器 * * @return 配置好的工具 */ private static JavaMailSenderImpl createMailSender() { JavaMailSenderImpl sender = new JavaMailSenderImpl(); sender.setHost(HOST); sender.setPort(PORT); sender.setUsername(USERNAME); sender.setPassword(PASSWORD); sender.setDefaultEncoding("Utf-8"); Properties p = new Properties(); p.setProperty("mail.smtp.timeout", "25000"); p.setProperty("mail.smtp.auth", "false"); sender.setJavaMailProperties(p); return sender; } /** * 发送邮件 * * @param to 接受人 * @param subject 主题 * @param html 发送内容 * @throws MessagingException 异常 * @throws UnsupportedEncodingException 异常 */ public static void sendHtmlMail(String to, String subject, String html) throws MessagingException,UnsupportedEncodingException { MimeMessage mimeMessage = mailSender.createMimeMessage(); // 设置utf-8或GBK编码，否则邮件会有乱码 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8"); messageHelper.setFrom(EMAILFORM, "系统名称"); messageHelper.setTo(to); messageHelper.setSubject(subject); messageHelper.setText(html, true); mailSender.send(mimeMessage); } }- 1
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当然这种是硬编码的方式了。也可以写在资源文件中。
资源文件
mailConfig.properties #服务器 mailHost=smtp.163.com #端口号 mailPort=25 #邮箱账号 mailUsername=*******@163.com #邮箱授权码 mailPassword=******* #时间延迟 mailTimeout=25000 #发送人 mailFrom=*******@163.com- 1
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获得资源文件内容
public class MailConfig { private static final String PROPERTIES_DEFAULT = "mailConfig.properties"; public static String host; public static Integer port; public static String userName; public static String passWord; public static String emailForm; public static String timeout; public static String personal; public static Properties properties; static{ init(); } /** * 初始化 */ private static void init() { properties = new Properties(); try{ InputStream inputStream = MailConfig.class.getClassLoader().getResourceAsStream(PROPERTIES_DEFAULT); properties.load(inputStream); inputStream.close(); host = properties.getProperty("mailHost"); port = Integer.parseInt(properties.getProperty("mailPort")); userName = properties.getProperty("mailUsername"); passWord = properties.getProperty("mailPassword"); emailForm = properties.getProperty("mailFrom"); timeout = properties.getProperty("mailTimeout"); personal = "墨裔"; } catch(IOException e){ e.printStackTrace(); } } }- 1
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发送邮件
public class MailUtil { private static final String HOST = MailConfig.host; private static final Integer PORT = MailConfig.port; private static final String USERNAME = MailConfig.userName; private static final String PASSWORD = MailConfig.passWord; private static final String emailForm = MailConfig.emailForm; private static final String timeout = MailConfig.timeout; private static final String personal = MailConfig.personal; private static JavaMailSenderImpl mailSender = createMailSender(); /** * 邮件发送器 * * @return 配置好的工具 */ private static JavaMailSenderImpl createMailSender() { JavaMailSenderImpl sender = new JavaMailSenderImpl(); sender.setHost(HOST); sender.setPort(PORT); sender.setUsername(USERNAME); sender.setPassword(PASSWORD); sender.setDefaultEncoding("Utf-8"); Properties p = new Properties(); p.setProperty("mail.smtp.timeout", timeout); p.setProperty("mail.smtp.auth", "false"); sender.setJavaMailProperties(p); return sender; } /** * 发送邮件 * * @param to 接受人 * @param subject 主题 * @param html 发送内容 * @throws MessagingException 异常 * @throws UnsupportedEncodingException 异常 */ public static void sendMail(String to, String subject, String html) throws MessagingException,UnsupportedEncodingException { MimeMessage mimeMessage = mailSender.createMimeMessage(); // 设置utf-8或GBK编码，否则邮件会有乱码 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8"); messageHelper.setFrom(emailForm, personal); messageHelper.setTo(to); messageHelper.setSubject(subject); messageHelper.setText(html, true); mailSender.send(mimeMessage); } } - 1
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https://github.com/wolf521/demo/tree/master/src/main/java/com/example/demo/mail
文章来源: 消息推送之发送邮件