标签:spring scheduled-tasks spring-boot-2 spring-websocket
我可以使用配置了WebSocketConfigurer的websocket,也可以使用@Scheduled()来安排任务,没有任何问题.
但是,当我同时使用它们时,java不会编译.
@Scheduled()注释可能会崩溃
org.springframework.web.socket.config.annotation.WebSocketConfigurationSupport $NoOpScheduler.scheduleAtFixedRate()
java.lang.IllegalStateException: Unexpected use of scheduler.
at org.springframework.web.socket.config.annotation.WebSocketConfigurationSupport$NoOpScheduler.scheduleAtFixedRate(WebSocketConfigurationSupport.java:123)
at org.springframework.scheduling.config.ScheduledTaskRegistrar.scheduleFixedRateTask(ScheduledTaskRegistrar.java:462)
at org.springframework.scheduling.config.ScheduledTaskRegistrar.scheduleFixedRateTask(ScheduledTaskRegistrar.java:436)
at org.springframework.scheduling.config.ScheduledTaskRegistrar.scheduleTasks(ScheduledTaskRegistrar.java:357)
at org.springframework.scheduling.config.ScheduledTaskRegistrar.afterPropertiesSet(ScheduledTaskRegistrar.java:332)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.finishRegistration(ScheduledAnnotationBeanPostProcessor.java:280)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:211)
at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.onApplicationEvent(ScheduledAnnotationBeanPostProcessor.java:102)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:399)
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:353)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:887)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:161)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:552)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1234)
at com.yeadev.JavaSpringBootJARAngularSeed.JavaSpringBootJarAngularSeedApplication.main(JavaSpringBootJarAngularSeedApplication.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
source code for WebSocketConfiguration
@Slf4j
@Configuration
@EnableWebSocket
public class WebSocketConfiguration implements WebSocketConfigurer {
@Override
public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
// added end point,
// eg. ws://localhost:8080/ws
// added WebSocketHandler to /ws
registry.addHandler(new WebSocketHandler(),"/ws");
log.info("added handler for WebSocket.");
}
}
source code for ScheduledTasks
@Slf4j
@Component
public class ScheduledTasks {
private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");
// @Scheduled() annotation can not use with WebSocketConfigurer
@Scheduled(fixedRate=1000)
public void reportCurrentTime() {
log.info("The time is now {}", dateFormat.format(new Date()));
}
}
我使用Spring Boot 2.0.0.RELEASE
解决方法:
我今天遇到了同样的问题.看起来好像Spring Web套接字创建了自己的taskScheduler bean,它没有实现任何正常的操作 – 它只抛出IllegalStateException.然后,此bean用于所有@Scheduled方法.我能够通过在ApplicationConfig中显式创建任务调度程序bean来解决这个问题:
@Bean
public TaskScheduler taskScheduler() {
ThreadPoolTaskScheduler taskScheduler = new ThreadPoolTaskScheduler();
taskScheduler.setPoolSize(10);
taskScheduler.initialize();
return taskScheduler;
}
标签:spring,scheduled-tasks,spring-boot-2,spring-websocket 来源: https://codeday.me/bug/20190622/1262797.html
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。