SpringBoot定时发送邮件

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

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;
/**
 * 引入了一个注解@EnableSwagger2来启动swagger注解。（启动该注解使得用在controller中的swagger注解生效， 覆盖的范围由@ComponentScan的配置来指定，
 * 这里默认指定为根路径”com.springboot”下的所有controller）
 * 也可以单独写衣swaggerConfigura
 */
@EnableScheduling //启动定时任务
@EnableSwagger2  //启动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 * * * * ?")
    //或直接指定时间间隔，例如：100秒
    // @Scheduled(fixedRate=100000)
    //早晨7点
    @Scheduled(cron = "0 0 7 * * ?")
    public void sendJob() {
        String bodyTen = "早安哇,太阳出来啦，记得开心哟";
        String bodyWen = "记得开心哟";
        logger.info("定时任务开始..........................");
        sendMail.sendWen(bodyWen);
        tenSenvenMail.sendTen(bodyTen);
        logger.info("定时任务结束..........................");
    }
}

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("开始发送..................");
        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"); // 使用的协议（JavaMail规范要求）
        props.setProperty("mail.smtp.host", smtpHost); // 发件人的邮箱的 SMTP服务器地址
        props.setProperty("mail.smtp.auth", "true"); // 请求认证，参数名称与具体实现有关

        // 创建Session实例对象
        Session session = Session.getDefaultInstance(props);
        // 创建MimeMessage实例对象
        MimeMessage message = new MimeMessage(session);
        // 设置发件人
        try {
            message.setFrom(new InternetAddress(from));
            // 设置收件人
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
            // 设置发送日期
            message.setSentDate(new Date());
            // 设置邮件主题
            message.setSubject(subject);
            // 设置纯文本内容的邮件正文
            message.setText(body);
            // 保存并生成最终的邮件内容
            message.saveChanges();
            // 设置为debug模式, 可以查看详细的发送 log
            session.setDebug(true);
            // 获取Transport对象
            Transport transport = session.getTransport("smtp");
            // 第2个参数需要填写的是QQ邮箱的SMTP的授权码，什么是授权码，它又是如何设置？
            transport.connect(from, "ipeiquufachheefg");
            // 发送，message.getAllRecipients() 获取到的是在创建邮件对象时添加的所有收件人, 抄送人, 密送人
            transport.sendMessage(message, message.getAllRecipients());
            logger.info("发送完成");
            transport.close();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }
}