36、springboot——异步任务、定时任务、邮件任务

@Service
public class AsynService {

    public void hello(){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("处理数据.....");
    }
}

@RestController
public class AsyncController {
    @Autowired
    AsyncService asyncService;

    @GetMapping("/hello")
    public String hello(){
        asyncService.hello();
        return "success";
    }
}

@Service
public class AsynService {

    //告诉spring这是一个异步的方法
    @Async
    public void hello(){
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        System.out.println("处理数据.....");
    }
}

@EnableAsync        //开启异步注解
@SpringBootApplication
public class Springboot04TaskApplication {

    public static void main(String[] args) {
        SpringApplication.run(Springboot04TaskApplication.class, args);
    }

}

@Service
public class ScheduleService {

    //定时任务
    //cron：second、minute、hour、day of month、day of week
    @Scheduled(cron = "0 * * * * MON-SAT")
    public void hello(){
        System.out.println("定时任务开启...");
    }
}

@EnableScheduling   //开启基于注解的定时任务
@SpringBootApplication
public class Springboot04TaskApplication {

    public static void main(String[] args) {
        SpringApplication.run(Springboot04TaskApplication.class, args);
    }

}

    @Scheduled(cron = "0-4 * * * * 0-7")
    public void hello(){
        System.out.println("定时任务开启...");
    }

1、引入邮件的依赖

dependency>
     groupId>org.springframework.bootgroupId>
     artifactId>spring-boot-starter-mailartifactId>
dependency>

查看springboot的mail的相关自动配置

注入的邮件操作类

    @Bean
    JavaMailSenderImpl mailSender(Session session) {
        JavaMailSenderImpl sender = new JavaMailSenderImpl();
        sender.setDefaultEncoding(this.properties.getDefaultEncoding().name());
        sender.setSession(session);
        return sender;
    }

相关的配置属性

@ConfigurationProperties(
    prefix = "spring.mail"
)
public class MailProperties {
    private static final Charset DEFAULT_CHARSET;
    private String host;
    private Integer port;
    private String username;
    private String password;
    private String protocol = "smtp";
    private Charset defaultEncoding;
    private Map properties;
    private String jndiName;

 我们是通过中间服务器来发送邮箱的

 2、测试发送简单邮件

spring.mail.username=xxxxxxxxx@qq.com
//注意是授权密码，非登录密码
spring.mail.password=rmdwtmbkrwpibddd
spring.mail.host=smtp.qq.com
//配置ssl安全连接
spring.mail.properties.mail.smtp.ssl.enable=true

    @Autowired
    JavaMailSenderImpl mailSender;

    @Test
    void contextLoads() {
        SimpleMailMessage mailMessage = new SimpleMailMessage();
        //邮件设置
        //标题
        mailMessage.setSubject("通知，下午开会");
        //内容
        mailMessage.setText("3点钟");
        //收件人邮箱
        mailMessage.setTo("xxxxxxxxxx@qq.com");
        //发件人邮箱
        mailMessage.setFrom("xxxxxxxxx@qq.com");
        mailSender.send(mailMessage);
    }

    @Test
    public void test02() throws MessagingException {
        //创建一个复杂的消息邮件
        MimeMessage mimeMessage = mailSender.createMimeMessage();
        //用mimeMessageHelper对邮箱进行设置
        MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage,true);
        //标题
        mimeMessageHelper.setSubject("通知，下午开会");
        //内容（可含html代码片段的话在后面添加参数true）
        mimeMessageHelper.setText("4点钟",true);
        //收件人邮箱
        mimeMessageHelper.setTo("1372365122@qq.com");
        //发件人邮箱
        mimeMessageHelper.setFrom("973951192@qq.com");
        //上传附件
        mimeMessageHelper.addAttachment("小黄人",new File("E:\\pythonTest\\alien_invasion\\images\\icon.jpg"));
        mailSender.send(mimeMessage);
    }