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This article mainly introduces "how to achieve Spring Boot2 scheduling". In daily operation, I believe many people have doubts about how to achieve Spring Boot2 scheduling. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "how to achieve Spring Boot2 scheduling". Next, please follow the editor to study!

Hazelcast

If you add a hazelcast dependency, Spring Boot will automatically configure a HazelcastInstance, which you can inject into the application, and the HazelcastInstance instance will be created only if the relevant configuration exists. If com.hazelcast.config.Configbean is defined, Spring Boot will use it. If your configuration specifies the name of the instance, Spring Boot will try to locate the existing one instead of creating a new one. You can specify the hazelcast.xml profile to be used in the configuration:

1spring.hazelcast.config=classpath:config/my-hazelcast.xml

Otherwise, Spring Boot attempts to find the Hazelcast configuration from the default path, that is, the working path where hazelcast.xml is located or the root path of classpath. Spring Boot also checks to see if the hazelcast.config system properties are set, refer to the Hazelcast documentation.

Be careful

Spring Boot provides caching support for Hazelcast. If caching is enabled, the HazelcastInstance instance will be automatically wrapped into a CacheManager implementation.

Quartz Scheduler

Spring Boot provides some convenience for using Quartz schedulers, including spring-boot-starter-quartz "Starter". If Quartz is available, Scheduler automatically configures a (abstracted through SchedulerFactoryBean).

The following types of beans are automatically picked and associated with the following types of Scheduler:

JobDetail: define a specific Job. JobDetail can build instances using JobBuilderAPI.

Calendar .

Trigger: defines when a particular job is triggered.

By default, memory JobStore is used. "however, if there is a bean available in the DataSource application and the spring.quartz.job-store-type property is configured accordingly, you can configure JDBC-based storage, as shown in the following example:"

1spring.quartz.job-store-type = jdbc

When using JDBC storage, you can initialize the mode at startup, as shown in the following example:

1spring.quartz.jdbc.initialize-schema = always

By default, the database is detected and initialized using standard scripts provided by the Quartz library. You can also provide custom scripts by setting the spring.quartz.jdbc.schema property

The Quartz configuration property () spring.quartz.properties.*) and SchedulerFactoryBeanCustomizerBean can be used to customize the Quartz Scheduler configuration, which allows the program Scheduler FactoryBeanization to be customized.

A job can define a setter to inject data mapping properties. Regular bean can be injected in a similar manner, as shown in the following example:

1public class SampleJob extends QuartzJobBean {

2 private MyService myService

3 private String name

4 / / Inject "MyService" bean

5 public void setMyService (MyService myService) {...}

6 / / Inject the "name" job data property

7 public void setName (String name) {...}

8 @ Override

9 protected void executeInternal (JobExecutionContext context)

10 throws JobExecutionException {

11...

12}

13} at this point, the study on "how to achieve Spring Boot2 scheduling" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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