SpringBoot发送邮件

通过RabbitMQ来向邮箱随机发送一个验证码

1、导入相关依赖；

<!--        邮件发送`-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>

2、准备一个邮箱服务器，QQ邮箱或者163邮箱单都可以；

开启相关权限：QQ邮箱==》设置==》账户==》开启服务

3、java mail

1）配置文件中配置相关配置；

application.yml

spring:
  mail:
    username: **********@qq.com  #邮箱账号
    password: dfydrlvrnhxyhdia   #密码
    host: smtp.qq.com    

2)写一个邮箱的工具类，全部整合好了，只需要配置邮箱，密码即可；

MailService .java

package com.seecen.redis.service;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.MailException;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;

import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;
import java.io.File;
import java.util.List;

/**
 * 描述:
 *
 * @author bigpeng
 * @create 2019-12-24 17:39
 */
@Service("mailService")
public class MailService {
    @Value("${spring.mail.username}")
    private String from;
    @Autowired
    private JavaMailSender mailSender;

    Logger logger = LoggerFactory.getLogger(this.getClass());

    /**
     * 发送简单邮件
     * @param to
     * @param title
     * @param content
     */
    public void sendSimpleMail(String to,String title,String content){
     //邮件消息对象
        try {
            SimpleMailMessage message = new SimpleMailMessage();
            message.setFrom(from);//发送者
            message.setTo(to);//接受者
            message.setSubject(title);//主题,标题
            message.setText(content);//内容
            mailSender.send(message);
            logger.info("邮件发送成功");
        } catch (MailException e) {
            logger.error("邮件发送失败",e);
        }
    }

    /**
     * 发送带附件的邮件
     * @param to
     * @param title
     * @param cotent
     * @param fileList
     */
    public void sendAttachmentsMail(String to, String title, String cotent, List<File> fileList){
        MimeMessage message = mailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = new MimeMessageHelper(message,true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(title);
            helper.setText(cotent);
            String fileName = null;
            for (File file:fileList) {
                fileName = MimeUtility.encodeText(file.getName(), "GB2312", "B");
                helper.addAttachment(fileName, file);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mailSender.send(message);
        logger.info("邮件发送成功");
    }
}

3）写一个消费者；

EmailConsumer.java

package com.seecen.redis.rabbitmq;


import com.seecen.redis.service.MailService;
import io.netty.util.internal.StringUtil;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.thymeleaf.util.StringUtils;

import java.util.Map;

@Component
public class EmailConsumer {

    @Autowired
    private MailService mailService;
    /**
     * 监听对应的队列，有消息时，会触发该方法
     * @param message 用来接收消息内容时，需要与发送时的数据类型一样
     */
    @RabbitListener(queues = {"email.verifyCode"},
                     containerFactory = "rabbitListenerContainerFactory")
    public void sendVerifyCodeEmail(Map<String,String> message){
        //todo 发送邮件验证码
        System.out.println("接收到消息："+message);
        String email=message.get("email");
        if (!StringUtils.isEmpty(email)) {
            mailService.sendSimpleMail(email,
                    "xx网注册验证码",
                    "您的注册验证码为:" + message.get("code"));
        }
    }
}

4）测试结果：

请求地址：localhost:8888/admin/sendCode?email=*******@qq.com