无法在 vaadin 14 上初始化 Atmosphere Framework答案

【问题标题】：Failed to initialize Atmosphere Framework on vaadin 14无法在 vaadin 14 上初始化 Atmosphere Framework
【发布时间】：2020-03-10 08:43:12
【问题描述】：

我在现有的 JavaEE 8 应用程序中添加了 Vaadin 14 流，该应用程序在前端使用 Wildfly 18 作为服务器容器具有 Perimeface 6.2 实现。该应用程序运行正常，但在部署之前，我收到以下错误。我在网上搜索过，但不知道为什么会这样。

我知道这与 WebSocket 的 Java API 有关，Vaadin servlet 尝试了以下方法。

添加对 pom 的依赖。

<dependency>
    <groupId>com.vaadin</groupId>
    <artifactId>flow-push</artifactId>
</dependency>

将@push 添加到主要的 Vaadin 类。 import com.vaadin.flow.component.page.Push;

有谁知道是什么原因，如何解决？

Vaadin servlet 配置：

<servlet>
        <servlet-name>Vaadin Servlet</servlet-name>
        <servlet-class>com.vaadin.flow.server.VaadinServlet</servlet-class>
        <init-param>
            <param-name>i18n.provider</param-name>
            <param-value>translation.TranslationProvider</param-value>
        </init-param>
    </servlet>

错误如下：

ERROR [org.atmosphere.util.IOUtils] (ServerService Thread Pool -- 6) : java.util.NoSuchElementException
    at java.util.ArrayList$Itr.next(ArrayList.java:862)
    at java.util.Collections$UnmodifiableCollection$1.next(Collections.java:1042)
    at org.atmosphere.util.IOUtils.guestRawServletPath(IOUtils.java:290)
    at org.atmosphere.util.IOUtils.guestServletPath(IOUtils.java:255)
    at org.primefaces.push.impl.PushEndpointMapper.configure(PushEndpointMapper.java:47)
    at org.atmosphere.cpr.AtmosphereFramework.initEndpointMapper(AtmosphereFramework.java:1791)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:911)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:838)
    at com.vaadin.flow.server.communication.PushRequestHandler.initAtmosphere(PushRequestHandler.java:218)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.initAtmosphereForVaadinServlet(JSR356WebsocketInitializer.java:184)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.init(JSR356WebsocketInitializer.java:149)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.contextInitialized(JSR356WebsocketInitializer.java:118)
    at com.vaadin.flow.server.startup.ServletContextListeners.contextInitialized(ServletContextListeners.java:42)
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.lang.Thread.run(Thread.java:748)
    at org.jboss.threads.JBossThread.run(JBossThread.java:485)

11:38:55,617 ERROR [org.atmosphere.cpr.AtmosphereFramework] (ServerService Thread Pool -- 6) Failed to initialize Atmosphere Framework: java.lang.IllegalStateException: Unable to configure jsr356 at that stage
    at org.atmosphere.util.IOUtils.guestRawServletPath(IOUtils.java:297)
    at org.atmosphere.util.IOUtils.guestServletPath(IOUtils.java:255)
    at org.primefaces.push.impl.PushEndpointMapper.configure(PushEndpointMapper.java:47)
    at org.atmosphere.cpr.AtmosphereFramework.initEndpointMapper(AtmosphereFramework.java:1791)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:911)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:838)
    at com.vaadin.flow.server.communication.PushRequestHandler.initAtmosphere(PushRequestHandler.java:218)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.initAtmosphereForVaadinServlet(JSR356WebsocketInitializer.java:184)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.init(JSR356WebsocketInitializer.java:149)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.contextInitialized(JSR356WebsocketInitializer.java:118)
    at com.vaadin.flow.server.startup.ServletContextListeners.contextInitialized(ServletContextListeners.java:42)
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.lang.Thread.run(Thread.java:748)
    at org.jboss.threads.JBossThread.run(JBossThread.java:485)

11:38:55,618 WARN  [com.vaadin.flow.server.communication.JSR356WebsocketInitializer] (ServerService Thread Pool -- 6) Failed to initialize Atmosphere for Vaadin Servlet: java.lang.RuntimeException: Atmosphere init failed
    at com.vaadin.flow.server.communication.PushRequestHandler.initAtmosphere(PushRequestHandler.java:227)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.initAtmosphereForVaadinServlet(JSR356WebsocketInitializer.java:184)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.init(JSR356WebsocketInitializer.java:149)
    at com.vaadin.flow.server.communication.JSR356WebsocketInitializer.contextInitialized(JSR356WebsocketInitializer.java:118)
    at com.vaadin.flow.server.startup.ServletContextListeners.contextInitialized(ServletContextListeners.java:42)
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)
    at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1541)
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.lang.Thread.run(Thread.java:748)
    at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: javax.servlet.ServletException: java.lang.IllegalStateException: Unable to configure jsr356 at that stage
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:955)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:838)
    at com.vaadin.flow.server.communication.PushRequestHandler.initAtmosphere(PushRequestHandler.java:218)
    ... 26 more
Caused by: java.lang.IllegalStateException: Unable to configure jsr356 at that stage
    at org.atmosphere.util.IOUtils.guestRawServletPath(IOUtils.java:297)
    at org.atmosphere.util.IOUtils.guestServletPath(IOUtils.java:255)
    at org.primefaces.push.impl.PushEndpointMapper.configure(PushEndpointMapper.java:47)
    at org.atmosphere.cpr.AtmosphereFramework.initEndpointMapper(AtmosphereFramework.java:1791)
    at org.atmosphere.cpr.AtmosphereFramework.init(AtmosphereFramework.java:911)
    ... 28 more

【问题讨论】：

标签： wildfly vaadin-flow java-ee-8 vaadin14

【解决方案1】：

将以下内容添加到 servlet 解决了该问题。希望可以节省一些人的时间和精力:)

        <init-param>
            <param-name>pushmode</param-name>
            <param-value>automatic</param-value>
        </init-param>
        <init-param>
            <param-name>org.atmosphere.websocket.suppressJSR356</param-name>
            <param-value>true</param-value>
        </init-param>
        <async-supported>true</async-supported>

【讨论】：