Spring @Scheduled task runs twice

Question

I am creating an @Scheduled task to run every 5 seconds. As has been a problem in other questions, my task is running twice!

I have looked at other ques

Answer 1

I also had this problem. I am using Spring 4. I have no xml configuration. Everything is configured with annotations and Java config.

I have a base configuration and a WebConfiguration. the error was caused by using @ComponentScan in both configurations. I removed component scan from base configuration.

@EnableWebMvc
@ComponentScan(basePackages = { "com.myservice" })
@Configuration
public class WebConfiguration extends WebMvcConfigurerAdapter {
  @Bean
  public UrlBasedViewResolver setupViewResolver() {
    UrlBasedViewResolver resolver = new UrlBasedViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    resolver.setViewClass(JstlView.class);
    return resolver;
  }

  @Override
  public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
    configurer.enable();
  }
}

@Configuration
@EnableScheduling
//@ComponentScan(basePackages = { "com.myservice" })  
@PropertySource("${myservice.properties.location:classpath:myservice.properties}")
public class BaseConfiguration  {


  @Autowired
  Environment environment;

  @Bean
  public static PropertySourcesPlaceholderConfigurer properties() {
    return new PropertySourcesPlaceholderConfigurer();
  }