springboot发送email邮件

添加依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
            <version>2.1.7.RELEASE</version>
        </dependency>

配置：去邮箱中开启SMTP服务

注意密码是邮箱的生成授权码

代码：

 package com.drawnblue.springbootemail;

 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;
 import java.util.Date;

 @Component
 public class EmailUtil {
     private String from="1248375279@qq.com";
     @Autowired
     private JavaMailSender sender;

     /**
      * 发送一般文本邮件
      * @param to
      * @param subject
      * @param content
      */
     public void sendTextEmail(String to,String subject,String content){
         SimpleMailMessage message = new SimpleMailMessage();
         message.setFrom(from);
         message.setTo(to);
         message.setSubject(subject);
         message.setText(content);
         message.setSentDate(new Date());
         sender.send(message);
     }

     /**
      * @param to
      * @param subject
      * @param content
      * @param imgPath
      * @param imgId
      * @throws MessagingException
      * 发送带图片并显示在邮件中的邮件
      */
     public void sendImageMail(String to, String subject, String content, String imgPath, String imgId) throws MessagingException {
         //创建message
         MimeMessage message = sender.createMimeMessage();
         MimeMessageHelper helper = new MimeMessageHelper(message, true);
         //发件人
         helper.setFrom(from);
         //收件人
         helper.setTo(to);
         //标题
         helper.setSubject(subject);
         //true指的是html邮件，false指的是普通文本
         helper.setText(content, true);
         //添加图片
         FileSystemResource file = new FileSystemResource(new File(imgPath));
         helper.addInline(imgId, file);
         //发送邮件
         sender.send(message);
     }

 }

测试

package com.drawnblue.springbootemail;

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.test.context.junit4.SpringRunner;

import javax.mail.MessagingException;

@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootEmailApplicationTests {
@Autowired
EmailUtil text;

    /**
     * 文本
     */
    @Test
    public void contextLoads() {
        text.sendTextEmail("yourEmailAddr","test","helloworld!!!");
    }

    /**
     * @throws MessagingException
     * 发送带图片的邮件
     */
    @Test
    public void sendImageEmailTest() throws MessagingException {
        text.sendImageMail("yourEmailAddr","image测试","<h1 style='color:red'>helloWorld</h1><img src='cid:0011'/>","G:\\壁纸\\timg.jpg","001");
    }
}

效果

要了解其他的也可以参考https://www.cnblogs.com/mxwbq/p/10625612.html博文