java James

Posted 2020-08-23 零星一点

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="[e-mail]";       //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="[e-mail]";       //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!");     }   }

 

　　

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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("[e-mail]");         helper.setTo("[e-mail]");                   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