# Spring Boot 实战系列 - 发送邮件

使用 spring boot 快速开发发送邮件功能

准备工作

• pom.xml 文件依赖如下

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
    </dependency>
    <!-- 邮件依赖 start -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-mail</artifactId>
    </dependency>
    <!-- 邮件依赖 end -->
</dependencies>

• application.properties 配置文件如下

spring.application.name=spring-boot-mail

# Spring Boot 整合Mail配置
spring.mail.host=smtp.qq.com
[email protected]
# qq邮箱授权码
spring.mail.password=xxxxxx
spring.mail.default-encoding=UTF-8

# 邮件发送相关配置
[email protected]
[email protected]

• MailService 代码如下

@Slf4j
@Service
public class MailService {

    @Autowired
    private JavaMailSender javaMailSender;

    @Value("${mail.address.from}")
    private String from;

    public void sendSimpleMail(String[] to, String subject, String text) {
        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
        simpleMailMessage.setSubject(subject);
        simpleMailMessage.setText(text);
        simpleMailMessage.setSentDate(new Date());
        simpleMailMessage.setTo(to);
        simpleMailMessage.setFrom(from);
        log.info("发送普通邮件，参数：{}", JSON.toJSONString(simpleMailMessage));
        javaMailSender.send(simpleMailMessage);
    }
}

• Application 启动类代码如下

@SpringBootApplication
public class Application {

    public static void main(String[] args) {

        // 启动
        SpringApplication.run(Application.class, args);
    }

}

• MailServiceTest 测试类代码如下

@RunWith(SpringRunner.class)
@SpringBootTest
public class MailServiceTest {

    @Autowired
    private MailService mailService;

    @Value("${mail.address.to}")
    private String to;

    @Test
    public void testSendSimpleMail() {

        String[] tos = to.split(",");
        mailService.sendSimpleMail(tos, "主题-测试", "内容-测试");
    }
}

说明

• 配置中 spring.mail.password 为授权码，本示例使用QQ邮箱，需要自行去申请授权码
• 只要依赖 spring-boot-starter-mail ，可以直接使用 JavaMailSender 实例（因为 Spring Boot 自动配置）

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本文完。