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我正在尝试使用 Web 套接字和@Async任务。

所以我创建了2个配置类：

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig {
}

@Configuration
@EnableAsync
public class AsyncConfiguration {
}

我还有一个服务注入AsyncTaskExecutor：

@Service
public class MyService {

    @Autowired
    private AsyncTaskExecutor asyncTaskExecutor;
}

在此之后，我的应用程序无法启动，并报告此错误：

***************************
APPLICATION FAILED TO START
***************************

Description:

Field asyncTaskExecutor in mypackage.MyService required a bean of type 'org.springframework.core.task.AsyncTaskExecutor' that could not be found.

The injection point has the following annotations:
    - @org.springframework.beans.factory.annotation.Autowired(required=true)

The following candidates were found but could not be injected:
    - Bean method 'applicationTaskExecutor' in 'TaskExecutionAutoConfiguration' not loaded because @ConditionalOnMissingBean (types: java.util.concurrent.Executor; SearchStrategy: all) found beans of type 'java.util.concurrent.Executor' clientInboundChannelExecutor, clientOutboundChannelExecutor, brokerChannelExecutor
    - Bean method 'taskScheduler' in 'TaskSchedulingAutoConfiguration' not loaded because @ConditionalOnBean (names: org.springframework.context.annotation.internalScheduledAnnotationProcessor; SearchStrategy: all) did not find any beans named org.springframework.context.annotation.internalScheduledAnnotationProcessor


Action:

Consider revisiting the entries above or defining a bean of type 'org.springframework.core.task.AsyncTaskExecutor' in your configuration.

我该如何解决这个问题？

4

1 回答 1

2

对我有用的解决方法：

import java.util.concurrent.Executor;

import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.aop.interceptor.SimpleAsyncUncaughtExceptionHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.task.AsyncTaskExecutor;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

@Configuration
@EnableAsync
public class AsyncConfiguration implements AsyncConfigurer {

    @Bean
    public AsyncTaskExecutor asyncTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(1);
        executor.setMaxPoolSize(10);
        executor.setQueueCapacity(11);
        executor.setThreadNamePrefix("AsyncExecutor-");
        executor.initialize();
        return executor;
    }

    @Override
    public Executor getAsyncExecutor() {
        return asyncTaskExecutor();
    }

    @Override
    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
        return new SimpleAsyncUncaughtExceptionHandler();
    }

}
于 2020-07-08T17:49:32.297 回答