org.springframework.boot
      spring-boot-starter-mail
    

package com.springbootemaildemo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
/**
 * 引入了一個(gè)注解@EnableSwagger2來(lái)啟動(dòng)swagger注解。（啟動(dòng)該注解使得用在controller中的swagger注解生效， 覆蓋的范圍由@ComponentScan的配置來(lái)指定，
 * 這里默認(rèn)指定為根路徑”com.springboot”下的所有controller）
 * 也可以單獨(dú)寫衣swaggerConfigura
 */
@EnableScheduling //啟動(dòng)定時(shí)任務(wù)
@EnableSwagger2 //啟動(dòng)swagger注解
@SpringBootApplication
public class MailApplication {
  public static void main(String[] args) {
    SpringApplication.run(MailApplication.class, args);
  }
}

package com.springbootemaildemo.job;

import com.springbootemaildemo.send.SendMail;
import com.springbootemaildemo.send.TenSenvenMail;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

@Component
@EnableScheduling
public class MailJob {
  private static final Logger logger = LoggerFactory.getLogger(MailJob.class);

  @Resource
  SendMail sendMail;

  @Resource
  TenSenvenMail tenSenvenMail;

  //@Scheduled(cron = "0/5 * * * * ?")
  //或直接指定時(shí)間間隔，例如：100秒
  // @Scheduled(fixedRate=100000)
  //早晨7點(diǎn)
  @Scheduled(cron = "0 0 7 * * ?")
  public void sendJob() {
    String bodyTen = "早安哇,太陽(yáng)出來(lái)啦，記得開(kāi)心喲";
    String bodyWen = "記得開(kāi)心喲";
    logger.info("定時(shí)任務(wù)開(kāi)始..........................");
    sendMail.sendWen(bodyWen);
    tenSenvenMail.sendTen(bodyTen);
    logger.info("定時(shí)任務(wù)結(jié)束..........................");
  }
}

package com.springbootemaildemo.send;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Date;
import java.util.Properties;


@Component
public class SendMail {
  private static final Logger logger = LoggerFactory.getLogger(SendMail.class);

  public void sendWen(String body) {
    logger.info("開(kāi)始發(fā)送..................");
    String from = "212212@qq.com";
    String to = "5456456@qq.com";
    String subject = "HAPPY";
    String smtpHost = "smtp.qq.com";
    Properties props = new Properties();
    props.setProperty("mail.transport.protocol", "smtp"); // 使用的協(xié)議（JavaMail規(guī)范要求）
    props.setProperty("mail.smtp.host", smtpHost); // 發(fā)件人的郵箱的 SMTP服務(wù)器地址
    props.setProperty("mail.smtp.auth", "true"); // 請(qǐng)求認(rèn)證，參數(shù)名稱與具體實(shí)現(xiàn)有關(guān)

    // 創(chuàng)建Session實(shí)例對(duì)象
    Session session = Session.getDefaultInstance(props);
    // 創(chuàng)建MimeMessage實(shí)例對(duì)象
    MimeMessage message = new MimeMessage(session);
    // 設(shè)置發(fā)件人
    try {
      message.setFrom(new InternetAddress(from));
      // 設(shè)置收件人
      message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
      // 設(shè)置發(fā)送日期
      message.setSentDate(new Date());
      // 設(shè)置郵件主題
      message.setSubject(subject);
      // 設(shè)置純文本內(nèi)容的郵件正文
      message.setText(body);
      // 保存并生成最終的郵件內(nèi)容
      message.saveChanges();
      // 設(shè)置為debug模式, 可以查看詳細(xì)的發(fā)送 log
      session.setDebug(true);
      // 獲取Transport對(duì)象
      Transport transport = session.getTransport("smtp");
      // 第2個(gè)參數(shù)需要填寫的是QQ郵箱的SMTP的授權(quán)碼，什么是授權(quán)碼，它又是如何設(shè)置？
      transport.connect(from, "ipeiquufachheefg");
      // 發(fā)送，message.getAllRecipients() 獲取到的是在創(chuàng)建郵件對(duì)象時(shí)添加的所有收件人, 抄送人, 密送人
      transport.sendMessage(message, message.getAllRecipients());
      logger.info("發(fā)送完成");
      transport.close();
    } catch (MessagingException e) {
      e.printStackTrace();
    }
  }
}