springboot如何做定时刷新
时间: 2023-06-01 22:02:56 浏览: 130
在Spring Boot中,可以使用@Scheduled注解来实现定时刷新。@Scheduled注解可以设置一个定时任务,并且可以指定任务执行的时间间隔。以下是一个示例:
首先,需要在应用程序的配置文件中添加以下属性:
```yaml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/mydb?useSSL=false&serverTimezone=UTC
username: root
password: root
hikari:
idle-timeout: 60000
maximum-pool-size: 10
```
接下来,在应用程序的启动类中添加@EnableScheduling注解以启用定时任务:
```java
@SpringBootApplication
@EnableScheduling
public class MyApp {
public static void main(String[] args) {
SpringApplication.run(MyApp.class, args);
}
}
```
最后,在需要定时刷新的类中添加@Scheduled注解:
```java
@Component
public class MyScheduler {
private final DataSource dataSource;
public MyScheduler(DataSource dataSource) {
this.dataSource = dataSource;
}
@Scheduled(fixedDelay = 60000)
public void refreshDataSource() {
// 刷新数据源
HikariDataSource hikariDataSource = (HikariDataSource) dataSource;
hikariDataSource.setIdleTimeout(60000);
hikariDataSource.setMaximumPoolSize(10);
}
}
```
在上面的示例中,我们使用@Scheduled注解来设置一个定时任务,其中fixedDelay属性指定任务执行的时间间隔为60秒。在任务执行过程中,我们可以通过dataSource对象获取到数据源,并执行数据源的刷新操作。
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