SpringBoot——邮件发送

导入依赖：

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

如果是使用QQ发送邮件，需要先获取一个授权码。首先进入QQ邮箱->设置->账户->开启服务

然后就获取到这个授权码了

配置

在application.properties中配置

#邮箱账户
[email protected]
#授权码
spring.mail.password=你的授权码
#主机
spring.mail.host=smtp.qq.com
#开启加密认证
spring.mail.properties.mail.smtp.ssl.enable=true

在test中测试：

package com.lyr;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;

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

@SpringBootTest
class SpringbootOtherApplicationTests {

    @Autowired
    JavaMailSender mailSender;

    @Test
    void contextLoads() {
        
        //一个普通的邮件
        SimpleMailMessage mailMessage = new SimpleMailMessage();

        mailMessage.setSubject("叮叮叮");   //邮件标题
        mailMessage.setText("这是我用Spring Boot发的邮件，嘻嘻！");  //邮件内容

        mailMessage.setTo("[email protected]");  //接收人
        mailMessage.setFrom("[email protected]");  //发送人

        mailSender.send(mailMessage);
    }

    @Test
    void contextLoads2() throws MessagingException {

        //一个复杂的邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        //组装
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);

        //正文
        helper.setSubject("叮叮叮");
        helper.setText("这是我用Spring Boot发的邮件，嘻嘻！");

        //附件
        helper.addAttachment("sign.jpg",new File("C:\\Users\\ASUS\\Pictures\\Camera Roll\\sign.jpg"));

        helper.setTo("[email protected]");
        helper.setFrom("[email protected]");

        mailSender.send(mimeMessage);
    }

}

在test中运行就可以发送了。