Home Java javaTutorial How to integrate scheduled tasks and email tasks in SpringBoot

How to integrate scheduled tasks and email tasks in SpringBoot

May 23, 2023 am 09:16 AM
springboot

定时任务

项目开发中经常需要执行一些定时任务,比如需要在每天凌晨时候,分析一次前一天的日志信息。Spring为我们提供了异步执行任务调度的方式

提供 :

  • TaskExecutor 任务调度这

  • TaskScheduler 任务执行者 两个注解:

  • @EnableScheduling// 开启定时任务功能

@Scheduled //表示什么时候执行

cron表达式:

字段 允许值 允许的特殊字符
秒 0-59 - * /
分 0-59 - * /
小时 0-23 - * /
日期 1-12或JAN-DEC - * ? / L W C 月份 0-59 - * /
星期 1-7或SUN-SAT - * ? / L C #

cron表达式例子:

  (0)0/20 * * * * ?   表示每20秒 调整任务

  (1)0 0 2 1 * ?   表示在每月的1日的凌晨2点调整任务

  (2)0 15 10 ? * MON-FRI   表示周一到周五每天上午10:15执行作业

  (3)0 15 10 ? 6L 2002-2006   表示2002-2006年的每个月的最后一个星期五上午10:15执行作

  (4)0 0 10,14,16 * * ?   每天上午10点,下午2点,4点 

  (5)0 0/30 9-17 * * ?   朝九晚五工作时间内每半小时 

  (6)0 0 12 ? * WED    表示每个星期三中午12点 

  (7)0 0 12 * * ?   每天中午12点触发 

  (8)0 15 10 ? * *    每天上午10:15触发 

  (9)0 15 10 * * ?     每天上午10:15触发 

  (10)0 15 10 * * ? *    每天上午10:15触发 

  (11)0 15 10 * * ? 2005    2005年的每天上午10:15触发 

  (12)0 * 14 * * ?     在每天下午2点到下午2:59期间的每1分钟触发 

  (13)0 0/5 14 * * ?    在每天下午2点到下午2:55期间的每5分钟触发 

  (14)0 0/5 14,18 * * ?     在每天下午2点到2:55期间和下午6点到6:55期间的每5分钟触发 

  (15)0 0-5 14 * * ?    在每天下午2点到下午2:05期间的每1分钟触发 

  (16)0 10,44 14 ? 3 WED    每年三月的星期三的下午2:10和2:44触发 

  (17)0 15 10 ? * MON-FRI    周一至周五的上午10:15触发 

  (18)0 15 10 15 * ?    每月15日上午10:15触发 

  (19)0 15 10 L * ?    每月最后一日的上午10:15触发 

  (20)0 15 10 ? * 6L    每月的最后一个星期五上午10:15触发 

  (21)0 15 10 ? * 6L 2002-2005   2002年至2005年的每月的最后一个星期五上午10:15触发 

  (22)0 15 10 ? * 6#3   每月的第三个星期五上午10:15触发
Copy after login

测试

@Service
public class task {


    // 秒  分 时 日 月 周几
    @Scheduled(cron = "0 17 18 * * ?")
    public void test(){
        System.out.println("这个是定时任务,现在的时间是:"+new Date());
    }
}
Copy after login

邮件任务

邮件发送需要引入spring-boot-starter-mail

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

定义MailProperties内容,配置在application.yml中

spring.mail.username=wangmeng@XXX.com
spring.mail.password=EXHFOVQXOTZUKWSL
spring.mail.host=smtp.163.com


#开启加密验证
spring.mail.properties.mail.smtp.ssl.enable=true
Copy after login

测试邮件发送

    @Autowired
    private JavaMailSenderImpl javaMailSender;
    @Test
    void contextLoads() {
        SimpleMailMessage simpleMailMessage=new SimpleMailMessage();

        simpleMailMessage.setSubject("这是SpringBoot集成mail,发送的第一个邮件");

        simpleMailMessage.setText("你好,你好,你好,你好!");
        simpleMailMessage.setTo("mengwangq@XXXX.com","jhwucc@XXX.com");
        simpleMailMessage.setFrom("wangmeng@XXX.com");

        javaMailSender.send(simpleMailMessage);
    }

    @Test
    void Test() throws Exception {
        MimeMessage mimeMessage =
                javaMailSender.createMimeMessage();
        MimeMessageHelper helperMessage = new MimeMessageHelper(mimeMessage, true,"utf-8");
        helperMessage.setSubject("今日工作进展");
        helperMessage.setText("<p style=&#39;color:red&#39;>今日工作汇报,详情请查看附件</p>");

        // 附件
        helperMessage.addAttachment("今日工作进展.docx", new File("D:\\usr\\local\\工作日报.docx"));



        helperMessage.setTo("mengwangq@XXXX.com");
        helperMessage.setFrom("wangmeng@XXXXX.com");


        javaMailSender.send(mimeMessage);
    }
Copy after login

The above is the detailed content of How to integrate scheduled tasks and email tasks in SpringBoot. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How Springboot integrates Jasypt to implement configuration file encryption How Springboot integrates Jasypt to implement configuration file encryption Jun 01, 2023 am 08:55 AM

Introduction to Jasypt Jasypt is a java library that allows a developer to add basic encryption functionality to his/her project with minimal effort and does not require a deep understanding of how encryption works. High security for one-way and two-way encryption. , standards-based encryption technology. Encrypt passwords, text, numbers, binaries... Suitable for integration into Spring-based applications, open API, for use with any JCE provider... Add the following dependency: com.github.ulisesbocchiojasypt-spring-boot-starter2. 1.1Jasypt benefits protect our system security. Even if the code is leaked, the data source can be guaranteed.

How SpringBoot integrates Redisson to implement delay queue How SpringBoot integrates Redisson to implement delay queue May 30, 2023 pm 02:40 PM

Usage scenario 1. The order was placed successfully but the payment was not made within 30 minutes. The payment timed out and the order was automatically canceled. 2. The order was signed and no evaluation was conducted for 7 days after signing. If the order times out and is not evaluated, the system defaults to a positive rating. 3. The order is placed successfully. If the merchant does not receive the order for 5 minutes, the order is cancelled. 4. The delivery times out, and push SMS reminder... For scenarios with long delays and low real-time performance, we can Use task scheduling to perform regular polling processing. For example: xxl-job Today we will pick

How to use Redis to implement distributed locks in SpringBoot How to use Redis to implement distributed locks in SpringBoot Jun 03, 2023 am 08:16 AM

1. Redis implements distributed lock principle and why distributed locks are needed. Before talking about distributed locks, it is necessary to explain why distributed locks are needed. The opposite of distributed locks is stand-alone locks. When we write multi-threaded programs, we avoid data problems caused by operating a shared variable at the same time. We usually use a lock to mutually exclude the shared variables to ensure the correctness of the shared variables. Its scope of use is in the same process. If there are multiple processes that need to operate a shared resource at the same time, how can they be mutually exclusive? Today's business applications are usually microservice architecture, which also means that one application will deploy multiple processes. If multiple processes need to modify the same row of records in MySQL, in order to avoid dirty data caused by out-of-order operations, distribution needs to be introduced at this time. The style is locked. Want to achieve points

How to solve the problem that springboot cannot access the file after reading it into a jar package How to solve the problem that springboot cannot access the file after reading it into a jar package Jun 03, 2023 pm 04:38 PM

Springboot reads the file, but cannot access the latest development after packaging it into a jar package. There is a situation where springboot cannot read the file after packaging it into a jar package. The reason is that after packaging, the virtual path of the file is invalid and can only be accessed through the stream. Read. The file is under resources publicvoidtest(){Listnames=newArrayList();InputStreamReaderread=null;try{ClassPathResourceresource=newClassPathResource("name.txt");Input

How to implement Springboot+Mybatis-plus without using SQL statements to add multiple tables How to implement Springboot+Mybatis-plus without using SQL statements to add multiple tables Jun 02, 2023 am 11:07 AM

When Springboot+Mybatis-plus does not use SQL statements to perform multi-table adding operations, the problems I encountered are decomposed by simulating thinking in the test environment: Create a BrandDTO object with parameters to simulate passing parameters to the background. We all know that it is extremely difficult to perform multi-table operations in Mybatis-plus. If you do not use tools such as Mybatis-plus-join, you can only configure the corresponding Mapper.xml file and configure The smelly and long ResultMap, and then write the corresponding sql statement. Although this method seems cumbersome, it is highly flexible and allows us to

Comparison and difference analysis between SpringBoot and SpringMVC Comparison and difference analysis between SpringBoot and SpringMVC Dec 29, 2023 am 11:02 AM

SpringBoot and SpringMVC are both commonly used frameworks in Java development, but there are some obvious differences between them. This article will explore the features and uses of these two frameworks and compare their differences. First, let's learn about SpringBoot. SpringBoot was developed by the Pivotal team to simplify the creation and deployment of applications based on the Spring framework. It provides a fast, lightweight way to build stand-alone, executable

How SpringBoot customizes Redis to implement cache serialization How SpringBoot customizes Redis to implement cache serialization Jun 03, 2023 am 11:32 AM

1. Customize RedisTemplate1.1, RedisAPI default serialization mechanism. The API-based Redis cache implementation uses the RedisTemplate template for data caching operations. Here, open the RedisTemplate class and view the source code information of the class. publicclassRedisTemplateextendsRedisAccessorimplementsRedisOperations, BeanClassLoaderAware{//Declare key, Various serialization methods of value, the initial value is empty @NullableprivateRedisSe

SpringBoot+Dubbo+Nacos development practical tutorial SpringBoot+Dubbo+Nacos development practical tutorial Aug 15, 2023 pm 04:49 PM

This article will write a detailed example to talk about the actual development of dubbo+nacos+Spring Boot. This article will not cover too much theoretical knowledge, but will write the simplest example to illustrate how dubbo can be integrated with nacos to quickly build a development environment.

See all articles