<dependency>    
	<groupId>org.springframework.boot</groupId>    
	<artifactId>spring-boot-starter-mail</artifactId>
</dependency>

spring:  
  mail:    
    host: smtp.qq.com  # 發(fā)郵件，smtp協(xié)議，后面.運(yùn)營(yíng)商    
    username: *********@qq.com    
    password: *********  # 不是郵箱的密碼，是下面獲取的一個(gè)授權(quán)碼

@Autowired    
private JavaMailSender javaMailSender;   

//定義接口
public interface SendMailService{
	void sendMail();
}

//實(shí)現(xiàn)類(lèi)
@Service
public class SendMailServiceImpl implements SendMailService { 
	@Autowired    
	private JavaMailSender javaMailSender;   
	//這些值也可以不硬編碼，寫(xiě)在配置文件中@Value取值
	private String from = "********@qq.com";	 // 發(fā)送人    
	private String to = "********@126.com";	 // 接收人   
	private String subject = "測(cè)試郵件";		 // 郵件主題   
	private String text = "測(cè)試郵件正文";	 	// 郵件內(nèi)容
	@Override    
	public void sendMail() {       
		SimpleMailMessage mailMessage = new SimpleMailMessage();  
		//mailMessage.setFrom(from); 
		//from后面加個(gè)名字，比如xxx公司，不然發(fā)送發(fā)一串郵箱數(shù)字，誰(shuí)知道你是誰(shuí)      
		mailMessage.setFrom(from + "別名");   
		//這里的to是個(gè)可變長(zhǎng)String，即可發(fā)送多人
		mailMessage.setTo(to);        
		mailMessage.setSubject(subject);        
		mailMessage.setText(text);
		//mailMessage.setSendDate();        //設(shè)置發(fā)送的時(shí)間
		//其他設(shè)置自行set
		javaMailSender.send(mailMessage);     //發(fā)送
	}
}

//超鏈接
private String text = "<a ;
//圖片
private String img = "<img src='https://pic35.photophoto.cn/20150511/0034034892281415_b.jpg' />";
@Override
public void sendMail() {    
	try {        
		MimeMessage mimeMessage = javaMailSender.createMimeMessage(); 
		//第二個(gè)參數(shù)，即是否允許添加多部件
		//我后面要添加各種附件，所以這里必須是true       
		MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage,true);       
		mimeMessageHelper.setFrom(from);       
		mimeMessageHelper.setTo(to);        
		mimeMessageHelper.setSubject(subject);
		//不加true，默認(rèn)當(dāng)普通文本，true即按html來(lái)解析        
		mimeMessageHelper.setText(text,true);  
		//添加附件
		File file1 = new File("logo.png"); 
		File file2 = new File("D:\\myboot.jar"); 
		//如果是手寫(xiě)文件名，記得添加個(gè)后綴，比如.png，方便在郵件里可預(yù)覽 
		mimeMessageHelper.addAttachment(file1.getName(),file1);  
		mimeMessageHelper.addAttachment("一個(gè)jar包.jar",file2);    
		javaMailSender.send(mimeMessage);    
	} catch (Exception e) {       
		e.printStackTrace();   
	}
}