JavaSpringBootWebSocket 1.2.1。在bean“subtocolWebSocketHandler”中释放IllegalArgumentException：无处理程序

8 月 Questions & Answers 4039

所以我希望从SpringBoot1.1.9升级我的项目。发布至1.2.1。释放

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
        <version>${spring.boot.version}</version>
    </dependency>

然而，在启动时，我获得了：

Exception in thread "Thread-0" org.springframework.context.ApplicationContextException: Failed to start bean 'subProtocolWebSocketHandler'; nested exception is java.lang.IllegalArgumentException: No handlers
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176)
        at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51)
        at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346)
        at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149)
        at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112)
        at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:770)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:483)
        at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:95)
        at com.springagain.Application.run(Application.java:17)
Caused by: java.lang.IllegalArgumentException: No handlers
        at org.springframework.util.Assert.isTrue(Assert.java:65)
        at org.springframework.web.socket.messaging.SubProtocolWebSocketHandler.start(SubProtocolWebSocketHandler.java:234)
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173)
        ... 8 more

下面是我的websocket配置的外观

@Configuration
@EnableWebSocketMessageBroker
public class WebsocketConfiguration extends
        AbstractWebSocketMessageBrokerConfigurer {

    @Override
    public void configureMessageBroker(MessageBrokerRegistry registry) {
        registry.enableStompBrokerRelay("/queue/", "/topic/");
    }

    @Override
    public void registerStompEndpoints(StompEndpointRegistry registry) {
        // TODO Auto-generated method stub

    }

}

切换回1.1.9。仅释放spring boot starter websocket依赖项（并将所有其他spring boot依赖项保持在1.2.1.RELEASE和spring core保持在4.1.4），异常消失

看起来像个bug，但有人能确认吗

更新：更多上下文-这来自后端服务器代码-没有websocket客户端连接到它。其目的是通过RabbitMQ发布“有趣的”事件，然后从暴露websocket端点的前端服务器向客户端提供这些事件。我的前端服务器上的代码添加具有Socksjs支持的端点：

public void registerStompEndpoints(StompEndpointRegistry registry) {
    registry.addEndpoint("/push").withSockJS();
}

从这个角度来看，要么我的理解存在根本性的缺陷：），要么Spring过于热衷于检查是否应该始终存在websocket端点

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JavaSpringBootWebSocket 1.2.1。在bean“subtocolWebSocketHandler”中释放IllegalArgumentException：无处理程序

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