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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
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
java James
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