Java实现邮件发送 SimpleMailMessage

网上很多用Session方式那种发送，有点过于冗余，需要在POM文件里添加依赖

有一个文章更详细可以参考：https://www.php.cn/manual/view/22279.html

<dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>

import org.junit.Test;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;

public class TestMail {
    @Test
    public void t1() throws MessagingException {
        JavaMailSenderImpl mailSender =new JavaMailSenderImpl();
        mailSender.setUsername("用户名");
        mailSender.setPassword("密码");
        mailSender.setHost("mail.hengrui.com");
        //mailSender.setProtocol("smtp");
        mailSender.setPort(587);//这个地方用587是因为Exchange邮件服务，多数是25
        //简单邮件
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setFrom("test@hengrui.com");
        simpleMailMessage.setTo("test2@hengrui.com");
        simpleMailMessage.setSubject("验证码verycode");
        simpleMailMessage.setText("您的验证码是600276<a href='baidu.com'>hello world</a>");
        //mailSender.send(simpleMailMessage);

        //html邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage,true,"utf-8");
        helper.setFrom("test@hengrui.com");
        helper.setTo("test2@hengrui.com");
        helper.setSubject("验证码verycode");
        helper.setText("您的验证码是600276<br><a href='baidu.com'>hello world</a>",true);
        helper.addAttachment("footer.png", new File("G:\\Image\\SUUMO\\footer.png"));
        mailSender.send(mimeMessage);

    }
}

Spring boot邮件发送

#引入依赖
<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>        
</dependency>