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，但无法弄清楚为什么会这样。
我知道这与 WebSocket 的 Java API 有关，Vaadin servlet 尝试了以下方法。
增加了对 pom 的依赖。
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>flow-push</artifactId>
</dependency>
添加@push到主要的 Vaadin 类。
import com.vaadin.flow.component.page.Push;
有谁知道是什么原因以及如何解决？
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