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