Java Spring-Bean执行方法两次_Java_Spring

Java Spring-Bean执行方法两次

java spring

Java Spring-Bean执行方法两次,java,spring,Java,Spring,当我运行应用程序时，下面的refreshDatasets方法会执行两次。你知道我把Spring的配置搞砸了吗（基于注释）计划任务 @Component @EnableScheduling public class SchedulingTasks { private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss"); @Autowired publ

当我运行应用程序时，下面的refreshDatasets方法会执行两次。你知道我把Spring的配置搞砸了吗（基于注释）

计划任务

@Component
@EnableScheduling
public class SchedulingTasks {

    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

    @Autowired
    public TestClass testclass;

    @Scheduled(fixedDelay = 1 * 60 * 60 * 1000)
    public void refreshDatasets() {
        testclass.simpleTest();
        System.out.println("The time is now " + dateFormat.format(new Date()));
    }
}

@Component
public class TestClass {
    public void simpleTest() {
        System.out.println("FINISHED");
    }
}

TestClass

@Component
@EnableScheduling
public class SchedulingTasks {

    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

    @Autowired
    public TestClass testclass;

    @Scheduled(fixedDelay = 1 * 60 * 60 * 1000)
    public void refreshDatasets() {
        testclass.simpleTest();
        System.out.println("The time is now " + dateFormat.format(new Date()));
    }
}

@Component
public class TestClass {
    public void simpleTest() {
        System.out.println("FINISHED");
    }
}

配置

@Configuration
@ComponentScan(basePackages = "com.some.analytics.scripts",
excludeFilters = {@ComponentScan.Filter (
        type= FilterType.ANNOTATION,
        value=Configuration.class)})
public class ScriptsConfig {

    @Bean
    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
        PropertySourcesPlaceholderConfigurer p =  new PropertySourcesPlaceholderConfigurer();
        p.setIgnoreResourceNotFound(true);

        return p;
    }
}

public class Scripts {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(ScriptsConfig.class);

        SchedulingTasks schedulingTasks = ctx.getBean(SchedulingTasks.class);
        schedulingTasks.refreshDatasets();
    }
}

Main

@Configuration
@ComponentScan(basePackages = "com.some.analytics.scripts",
excludeFilters = {@ComponentScan.Filter (
        type= FilterType.ANNOTATION,
        value=Configuration.class)})
public class ScriptsConfig {

    @Bean
    public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
        PropertySourcesPlaceholderConfigurer p =  new PropertySourcesPlaceholderConfigurer();
        p.setIgnoreResourceNotFound(true);

        return p;
    }
}

public class Scripts {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(ScriptsConfig.class);

        SchedulingTasks schedulingTasks = ctx.getBean(SchedulingTasks.class);
        schedulingTasks.refreshDatasets();
    }
}

运行main方法时，我得到以下输出：

FINISHED The time is now 11:08:39 
FINISHED The time is now 11:08:39

使用

@EnableScheduling

注释时，Spring会在后台创建一个

TaskExecutor

。这将计划所有的

@Scheduled

方法。对于具有

fixedDelay

的方法，它们将立即触发（除非设置了

initialDelay

）

您还以编程方式执行任务，因此有两次执行：

由Spring执行的一个
在主方法中执行的一个

您应该删除手动调用，一切都应该按预期工作

您可以在和中找到更多信息当使用

@EnableScheduling