SpringBoot实现QQ邮箱邮件发送

一、邮件发送前的准备

使用QQ邮箱发送邮件，首先要申请开通POP3/SMTP服务或者IMAP/SMTP。

1、登录QQ邮箱，依次单击顶部的设置按钮和账号按钮

 2、在账户选择卡下方找到POP3/SMTP服务，单击后方的“开启”按钮

单击“开启”按钮后，依照引导步骤发送短信，操作成功后，会获取一个授权码，将授权码保存下来过后使用。

二、项目搭建

1、pom.xml

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

2、application.properties

server.port=8082
spring.mail.host=smtp.qq.com
spring.mail.protocol=smtp
spring.mail.default-encoding=UTF-8
spring.mail.password=授权码
[e-mail]
spring.mail.port=587
spring.mail.properties.mail.stmp.socketFactory.class=javax.net.ssl.SSLSocketFactory
spring.mail.properties.mail.debug=true

3、发送简单邮件

@Component
public class MailService {
    @Autowired
    JavaMailSender javaMailSender;
    //发送简单邮件
    public void sandSimpleMail(String from,String to,String cc,String subject,String content)
    {
        SimpleMailMessage mailMessage = new SimpleMailMessage();
        mailMessage.setFrom(from);
        mailMessage.setTo(to);
        mailMessage.setCc(cc);
        mailMessage.setSubject(subject);
        mailMessage.setText(content);
        javaMailSender.send(mailMessage);
    }
}

测试：

@RunWith(SpringRunner.class)
@SpringBootTest
class MailApplicationTests {
    @Autowired
  MailService mailService;
    @Test
    void contextLoads() {
    }
    @Test
    public void sendSimpleMail()
    {
        mailService.sandSimpleMail("[e-mail]","[e-mail]",
                "[e-mail]","测试邮件主题","测试邮件内容");
    }
}

 运行结果：

4、发送带附件的邮件

@Component
public class MailService {
    @Autowired
    JavaMailSender javaMailSender;
//带附件的邮件
    public void sandAttachMail(String from, String to, String subject, String content, File file)
    {
        try {
            MimeMessage message = javaMailSender.createMimeMessage();
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content);
            helper.addAttachment(file.getName(),file);
            javaMailSender.send(message);
        }catch (MessagingException e)
        {
            e.printStackTrace();
        }
    }
测试：


@RunWith(SpringRunner.class)
@SpringBootTest
class MailApplicationTests {
    @Autowired
  MailService mailService;
    @Test
    public void sendAttachMail()
    {
        mailService.sandAttachMail("[e-mail]",
                "[e-mail]","测试邮件主题",
                "测试邮件内容",new File("D:\\Java_All_\\redis启动命令.txt"));
    }
}

运行结果：