springboot-mail发邮件，不需要邮件服务器

很简单 步骤走起->

1.需要一个邮箱账号，我以163邮箱为例，先开启第三方服务后获得密码，后面用来邮箱登录

2.加入mail 依赖

3.properties配置账号和第三方服务密码(不是邮箱密码，是第一步中的密码)

4.简单看下项目结构：

5.直接上serviceImpl

package com.idress.inter.impl;

import com.idress.inter.MailService;

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.core.io.FileSystemResource;

import org.springframework.mail.SimpleMailMessage;

import org.springframework.mail.javamail.JavaMailSender;

import org.springframework.mail.javamail.MimeMessageHelper;

import org.springframework.stereotype.Component;

import javax.mail.MessagingException;

import javax.mail.internet.MimeMessage;

import java.io.File;

@Component

public class MailServiceImpl implements MailService {

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

@Autowired

    private JavaMailSender mailSender;

@Value("${spring.mail.from.addr}")

    private String from;//由谁发出邮件 is my

@Override

    public void sendSimpleMail(String to, String subject, String content) {

        SimpleMailMessage message = new SimpleMailMessage();

        message.setFrom(from);

        message.setTo(to);

        message.setSubject(subject);

        message.setText(content);

try {

            mailSender.send(message);

            logger.info("简单邮件已经发送。");

        } catch (Exception e) {

            logger.error("发送简单邮件时发生异常！", e);

        }

}

//发送html格式邮件

    @Override

    public void sendHtmlMail(String to, String subject, String content) {

        MimeMessage message = mailSender.createMimeMessage();

        try {

            //true表示需要创建一个multipart message

            MimeMessageHelper helper = new MimeMessageHelper(message, true);

            helper.setFrom(from);

            helper.setTo(to);

            helper.setSubject(subject);

            helper.setText(content, true);

mailSender.send(message);

            logger.info("html邮件发送成功");

        } catch (MessagingException e) {

            logger.error("发送html邮件时发生异常！", e);

        }

    }

//发送带附件的邮件

    @Override

    public void sendAttachmentsMail(String to, String subject, String content, String filePath) {

        MimeMessage message = mailSender.createMimeMessage();

try {

            MimeMessageHelper helper = new MimeMessageHelper(message, true);

            helper.setFrom(from);

            helper.setTo(to);

            helper.setSubject(subject);

            helper.setText(content, true);

FileSystemResource file = new FileSystemResource(new File(filePath));

            String fileName = filePath.substring(filePath.lastIndexOf(File.separator));

            helper.addAttachment(fileName, file);

mailSender.send(message);

            logger.info("带附件的邮件已经发送。");

        } catch (MessagingException e) {

            logger.error("发送带附件的邮件时发生异常！", e);

        }

    }

/**

     * 嵌入静态资源的邮件

     */

    @Override

    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId) {

        MimeMessage message = mailSender.createMimeMessage();

try {

            MimeMessageHelper helper = new MimeMessageHelper(message, true);

            helper.setFrom(from);

            helper.setTo(to);

            helper.setSubject(subject);

            helper.setText(content, true);

FileSystemResource res = new FileSystemResource(new File(rscPath));

            helper.addInline(rscId, res);

mailSender.send(message);

            logger.info("嵌入静态资源的邮件已经发送。");

        } catch (MessagingException e) {

            logger.error("发送嵌入静态资源的邮件时发生异常！", e);

        }

    }

}

6.junt测试走起

package com.idress;

import com.idress.inter.MailService;
import com.sun.xml.internal.bind.CycleRecoverable;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.core.env.Environment;
import org.springframework.test.context.junit4.SpringRunner;
import org.thymeleaf.context.Context;
import org.thymeleaf.spring4.SpringTemplateEngine;

@RunWith(SpringRunner.class)
@SpringBootTest
public class Sb10MailApplicationTests {

   @Autowired
   private MailService mailService;

   @Test
   public void contextLoads() {
      mailService.sendSimpleMail("2473538988@qq.com","恭喜你的简历被我们查看"," 请您....");
   }

   @Test
   public void testHtmlMail() throws Exception{
      for (int i = 0; i < 25; i++) {

         String content = "<html>\n" +
               "<body>\n" +
               "    <h3>hello world ! 这是一封Html邮件!</h3>\n" +
               "</body>\n" +
               "</html>";
         mailService.sendHtmlMail("whatarey0206@qq.com", "test simple mail", content);
      }

   }
   //发送待附件的邮件
   @Test
   public void sendAttachmentsMail() {
         String filePath = "E:\\img01.PNG";
         mailService.sendAttachmentsMail("2633992679@qq.com", "主题：带附件的邮件", "有附件，请查收！", filePath);
   }

   @Test
   public void sendInlineResourceMail() {
      String rscId = "neo006";
      String content="<html><body>这是有图片的邮件：<img src='cid:" + rscId + "' ></body></html>";
      String imgPath = "E:\\img01.PNG";

      mailService.sendInlineResourceMail("1544303828@qq.com", "主题：这是有图片的邮件", content, imgPath, rscId);
   }

   //使用邮件模板

   @Autowired
   private SpringTemplateEngine templateEngine;

   @Test
   public void sendTemplateMail() {
      //创建邮件正文
      Context context = new Context();
      context.setVariable("id", "006");
      String emailContent = templateEngine.process("emailTemplate", context);

      mailService.sendHtmlMail("1544303828@qq.com","主题：这是模板邮件",emailContent);
   }
}

7.邮箱模板(thymeleaf)

转载http://www.ityouknow.com/springboot/2017/05/06/springboot-mail.html

一位大神 纯洁的微笑