Spring引导抽象自动配置问题 [英] Spring boot abstract auto configuration problems

问题描述

使用spring boot同时运行activiti和web套接字时出现以下错误：

I have the following error while using spring boot to run activiti and web sockets together:

Parameter 0 of method springAsyncExecutor in org.activiti.spring.boot.AbstractProcessEngineAutoConfiguration required a single bean, but 4 were found:
- clientInboundChannelExecutor: defined by method 'clientInboundChannelExecutor' in class path resource [org/springframework/web/socket/config/annotation/DelegatingWebSocketMessageBrokerConfiguration.class]
- clientOutboundChannelExecutor: defined by method 'clientOutboundChannelExecutor' in class path resource [org/springframework/web/socket/config/annotation/DelegatingWebSocketMessageBrokerConfiguration.class]
- brokerChannelExecutor: defined by method 'brokerChannelExecutor' in class path resource [org/springframework/web/socket/config/annotation/DelegatingWebSocketMessageBrokerConfiguration.class]
- messageBrokerTaskScheduler: defined by method 'messageBrokerTaskScheduler' in class path resource [org/springframework/web/socket/config/annotation/DelegatingWebSocketMessageBrokerConfiguration.class]


Action:

Consider marking one of the beans as @Primary, updating the consumer to accept multiple beans, or using @Qualifier to identify the bean that should be consumed

由于spring boot使用抽象配置，我是否必须覆盖某些配置？

As spring boot uses abstract configuration, do I have to override some configurations?

感谢您的帮助。

推荐答案

这可能是一个错误Activiti的自动配置类。它依赖于它们在应用程序上下文中只是一个 TaskExecutor bean，或者，如果有多个bean，则其中一个是主要的。

That's arguably a bug in Activiti's auto-configuration class. It's relying on their only being a single TaskExecutor bean in the application context or, if there are multiple beans, for one of them to be primary.

您应该能够通过声明自己的 TaskExecutor bean并将其标记为 @Primary来解决此问题：

You should be able to work around the problem by declaring your own TaskExecutor bean and marking it as @Primary:

@Configuration
class SomeConfiguration {

    @Primary
    @Bean
    public TaskExecutor primaryTaskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        // Customize executor as appropriate
        return executor;
    }

}

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