spring mail 发送邮件

绝地灬酷狼 2022-08-07 05:52 221阅读 0赞

最近在项目中用到了发送邮件的功能（用户注册邮箱激活、用户密码重置邮箱获取验证码等等），所以写了一下java的邮件发送。

## java mail ##

java mail是最早出现的java邮件发送，以下是它的使用方式（引入jar包：activation.jar、mail.jar）

package com.lingjuli.servlet;
    
    import java.util.Date;
    import java.util.Properties;
    
    import javax.mail.Authenticator;
    import javax.mail.BodyPart;
    import javax.mail.Message;
    import javax.mail.Multipart;
    import javax.mail.PasswordAuthentication;
    import javax.mail.Session;
    import javax.mail.Transport;
    import javax.mail.internet.InternetAddress;
    import javax.mail.internet.MimeBodyPart;
    import javax.mail.internet.MimeMessage;
    import javax.mail.internet.MimeMultipart;
    
    
    public class SendMail {
    	private static String username = "luo.xxx@163.com";
    	private static String password = "xxx";
    	private static String smtpServer = "smtp.163.com";//邮件协议
    	private static String fromMailAddress = "luo.xxx@163.com";
    	private static String toMailAddress = "xxx@sina.com";
    
    	public static void main(String[] args) throws Exception {
    		Properties props = new Properties();
    		props.put("mail.smtp.auth", "true");
    		props.put("mail.smtp.host", smtpServer);
    		// 获得邮件会话对象
    		Session session = Session.getDefaultInstance(props,
    				new SmtpAuthenticator(username, password));
    		/** *************************************************** */
    		// 创建MIME邮件对象
    		MimeMessage mimeMessage = new MimeMessage(session);
    		mimeMessage.setFrom(new InternetAddress(fromMailAddress));// 发件人
    		mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(
    				toMailAddress));// 收件人
    		mimeMessage.setSubject("主题");
    		mimeMessage.setSentDate(new Date());// 发送日期
    		BodyPart mdp = new MimeBodyPart();// 新建一个存放信件内容的BodyPart对象
    		mdp.setContent("测试java邮件发送", "text/html;charset= GB2312");// 设置发送邮件内容为HTML类型,并为中文编码
    		Multipart mm = new MimeMultipart();
    		mm.addBodyPart(mdp);
    		mimeMessage.setContent(mm);
    		mimeMessage.saveChanges();
    		Transport.send(mimeMessage);// 发送邮件
    
    	}
    
    }
    /**
     * Smtp认证
     */
    class SmtpAuthenticator extends Authenticator {
    	String username = null;
    	String password = null;
    
    	// SMTP身份验证
    	public SmtpAuthenticator(String username, String password) {
    		this.username = username;
    		this.password = password;
    	}
    
    	public PasswordAuthentication getPasswordAuthentication() {
    		return new PasswordAuthentication(this.username, this.password);
    	}
    
    }

## spring mail  ##

通过spring对java mail的上层封装，以下为使用方式

package com.zwx.utils;
    
    import java.io.File;
    
    import javax.mail.MessagingException;
    import javax.mail.internet.MimeMessage;
    
    import org.springframework.mail.javamail.JavaMailSenderImpl;
    import org.springframework.mail.javamail.MimeMessageHelper;
    
    public class MailSender {
    	/*
    	private static String username = "luo.xxx@163.com";
    	private static String password = "xxx";
    	private static String smtpServer = "smtp.163.com";
    	private static String fromMailAddress = "luo.xxx@163.com";
    	private static String toMailAddress = "xxx@sina.com";
    	*/
    	private static PropertiesLoader propertiesLoader = new PropertiesLoader("bdsc-web.properties");//读取配置文件
    	public static void mailSimple(String toMailSAddress,String subject,String content) {
    		// 发送器  
    		JavaMailSenderImpl mailSender= new JavaMailSenderImpl();
    		// 建立邮件消息,发送简单邮件和html邮件的区别
    		MimeMessage mailMessage = mailSender.createMimeMessage();
    		// 为防止乱码，添加编码集设置
    		MimeMessageHelper messageHelper = null;
    		try {
    			//发送附件 则 参数为 multipart 为 ture
    			messageHelper = new MimeMessageHelper(mailMessage,true,"UTF-8");
    		} catch (MessagingException e1) {
    			// TODO Auto-generated catch block
    			e1.printStackTrace();
    		}
    		//设定mail server
    		mailSender.setHost(propertiesLoader.getProperty("mail.smtp.host"));
    		mailSender.setPort(propertiesLoader.getInteger("mail.smtp.port"));
    		mailSender.setUsername(propertiesLoader.getProperty("mail.smtp.username"));
    		mailSender.setPassword(propertiesLoader.getProperty("mail.smtp.password"));
    		//建立邮件消息
    		//设置收件人、寄件人
            try {
    			messageHelper.setTo(toMailSAddress);
    			messageHelper.setFrom(propertiesLoader.getProperty("mail.smtp.username"));
    	        messageHelper.setSubject(subject);
    	        messageHelper.setText(content,true);
    	        //附件内容
    	        messageHelper.addAttachment("附件1", new File("h:/test/abc.pdf"));
    	        messageHelper.addAttachment("附件2", new File("h:/test/qwe.gif"));
    		} catch (MessagingException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    		//发送邮件
            mailSender.send(mailMessage);
    		System.out.println("邮件发送成功!");
    		
    	}
    	public static void main(String[] args) {
    		try {
    			MailSender.mailSimple("xxx@sina.com","qwe","qwe");
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}
    }

bdsc-web.properties

#spring mail
    mail.smtp.username = luo.xxx@163.com
    mail.smtp.password = xxx
    mail.smtp.host = smtp.163.com
    mail.smtp.auth = true
    mail.smtp.timeout = 1000