使用JavaMail发送电子邮件(案例)
需求：
使用JavaMail技术，实现从A账户给B账户发送一封电子邮件，标题为“会议通知”，邮件内容为“XX你好！请于明天下午16:00 准时到B01会议室召开技术讨论会。”通过Outlook 客户端查看邮件程序发送的邮件是否发送成功
关键代码：
创建一个类EmailAuthenticator并继承自Authenticator，并植入用户名和密码
创建Mail类设置邮件信息：
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public class Mail { private String mailServer,from,to,mailSubject,mailContent; private String username,password; public Mail(){ //设置邮件信息 //进行认证登录的用户名 username="hq@mail.com"; //认证密码 password="hq"; //认证的邮箱对应的邮件服务器 mailServer="192.168.17.176"; //发件人信息 from="wj"; //收件人信息 to="wj@mail.com"; //邮件标题 mailSubject="我们都是好孩子333"; //邮件内容 mailContent="这是一封测试邮件！如有雷同，纯属不可能"; } //设置邮件服务器 @SuppressWarnings("static-access")public void send(){ Properties prop=System.getProperties(); //指定邮件server prop.put("mail.smtp.host", mailServer); //是否开启认证 prop.put("mail.smtp.auth", "true"); //smtp协议的 prop.put("mail.smtp.port", "25"); //产生Session服务 EmailAuthenticator mailauth=new EmailAuthenticator(username, password); Session mailSession=Session.getInstance(prop,(Authenticator)mailauth); try { //封装Message对象 Message message=new MimeMessage(mailSession); message.setFrom(new InternetAddress(from)); //发件人 message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));//收件人 message.setSubject(mailSubject); //设置内容(设置字符集处理乱码问题) message.setContent(mailContent,"text/html;charset=gbk"); message.setSentDate(new Date()); //创建Transport实例，发送邮件 Transport tran=mailSession.getTransport("smtp"); tran.send(message,message.getAllRecipients()); tran.close(); } catch (Exception e) { e.printStackTrace(); } } |
测试类：
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public class MyTest { public static void main(String[] args) { Mail mail=new Mail(); mail.send(); System.out.println("success!"); }} |
七、发送带附件的Mail
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public class MailWithAttachment { private JavaMailSender mailSender; //必须使用 JavaMailSender public void setMailSender(JavaMailSender mailSender) { this.mailSender = mailSender; } public void send() throws MessagingException,IOException{ MimeMessage mimeMessage = mailSender.createMimeMessage(); MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8"); helper.setFrom("hq@mail.com"); helper.setTo("wj@mail.com"); helper.setSubject("哈哈哈"); helper.setText("每日一笑，开开心心！！！"); //添加附件1 ClassPathResource file1 = new ClassPathResource( "/cn/bdqn/attachfiles/test.doc"); helper.addAttachment(file1.getFilename(), file1.getFile()); //添加附件2：附件的文件名为中文时，需要对文件名进行编码转换，解决乱码问题 ClassPathResource file2 = new ClassPathResource( "/cn/bdqn/attachfiles/附件测试文件.doc"); helper.addAttachment(MimeUtility.encodeWord(file2.getFilename()),file2.getFile()); mailSender.send(mimeMessage); }} |
测试类：
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public class MailTest { public static void main(String[] args){ ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); /*测试带附件的邮件*/ try{ MailWithAttachment mailWithAttach = (MailWithAttachment)context.getBean("mailWithAttachment"); mailWithAttach.send(); }catch(Exception e){ System.out.print(e.toString()); } }} |
applicationContext.xml：大配置
