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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

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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!");
    }
 
}

 

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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("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  

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