如何在Eclipse中將項目從Jsf 2.2升級到Jsf 2.3

Question

目前我正在使用Eclipse使用Primefaces 6.1和Primefaces 6.1 Jsf 2.2進行項目。 現在我想將項目從Jsf 2.2升級到Jsf 2.3 。 但是在用javax.faces-2.3.2.jar ， javax.faces-api-2.3.jar ， jsf-impl-2.2.3.jar替換javax.faces-2.3.2.jar的jar文件后，我javax.faces-2.3.2.jar一些問題。

我知道在Jsf 2.3中使用Websocket的問題已經提出了這個問題，但在我的例子中，所有jar文件/庫都已添加。 我的問題是：
哪個編輯器目前可用於Jsf 2.3支持？
我認為Eclipse只支持jsf 2.2

問題：
1. Eclipse無法識別新的標簽
2.運行項目后，我收到錯誤消息

14:41:37,978 ERROR [io.undertow.request] (default task-10) UT005023: Exception handling request to /haag/user/push.xhtml: javax.servlet.ServletException: /user/push.xhtml @21,63 <f:websocket> Tag Library supports namespace: http://xmlns.jcp.org/jsf/core, but no tag was defined for name: websocket
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
    at io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
    at io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
    at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
    at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
    at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
    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$0(UndertowDeploymentInfoService.java:1508)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1508)
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:326)
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:812)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: javax.faces.view.facelets.TagException: /user/push.xhtml @21,63 <f:websocket> Tag Library supports namespace: http://xmlns.jcp.org/jsf/core, but no tag was defined for name: websocket
    at com.sun.faces.facelets.compiler.CompilationManager.pushTag(CompilationManager.java:311)
    at com.sun.faces.facelets.compiler.SAXCompiler$CompilationHandler.startElement(SAXCompiler.java:268)
    at org.apache.xerces.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:498)
    at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:180)
    at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(XMLDTDValidator.java:811)
    at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:275)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1653)
    at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:324)
    at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:875)
    at org.apache.xerces.parsers.XML11Configuration.parse(XML11Configuration.java:798)
    at org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:108)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1198)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:564)
    at org.apache.xerces.jaxp.SAXParserImpl.parse(SAXParserImpl.java:298)
    at javax.xml.parsers.SAXParser.parse(SAXParser.java:195)
    at com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:464)
    at com.sun.faces.facelets.compiler.SAXCompiler.doCompile(SAXCompiler.java:440)
    at com.sun.faces.facelets.compiler.Compiler.compile(Compiler.java:124)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.createFacelet(DefaultFaceletFactory.java:481)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.access$100(DefaultFaceletFactory.java:106)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:199)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory$1.newInstance(DefaultFaceletFactory.java:197)
    at com.sun.faces.facelets.impl.DefaultFaceletCache$1.newInstance(DefaultFaceletCache.java:86)
    at com.sun.faces.facelets.impl.DefaultFaceletCache$1.newInstance(DefaultFaceletCache.java:81)
    at com.sun.faces.util.ExpiringConcurrentCache$1.call(ExpiringConcurrentCache.java:99)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at com.sun.faces.util.ExpiringConcurrentCache.get(ExpiringConcurrentCache.java:114)
    at com.sun.faces.facelets.impl.DefaultFaceletCache.getFacelet(DefaultFaceletCache.java:124)
    at com.sun.faces.facelets.impl.DefaultFaceletCache.getFacelet(DefaultFaceletCache.java:63)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:295)
    at com.sun.faces.facelets.impl.DefaultFaceletFactory.getFacelet(DefaultFaceletFactory.java:239)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.buildView(FaceletViewHandlingStrategy.java:1000)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:99)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
    ... 42 more

Answer 1

1. 正確。 Eclipse需要一些時間來實現新功能。 使用最新的基於Eclipse的Red Hat Developer Studio，我遇到了同樣的問題，它仍然無法識別Eclipse中的新websocket標簽，但您可以在項目中使用它。 我也在我的項目中使用JSF 2.3。 如果要加快進程，請在Eclipse上記錄問題。

2. 該錯誤與您的服務器有關。 我猜您根據日志使用WildFly或EAP。

要解決這個問題：

• 請遵循以下指南： https ： //docs.jboss.org/author/display/WFLY10/JSF+Configuration#JSFConfiguration-ConfiguringaJSFapptouseanondefaultJSFimplementation
• 和這個分裂罐子的指南： 如何在WildFly上安裝JSF（javax.faces.jar）的一個jar變種

非常重要：如果你沒有配置你的野生動物或你的應用程序明確使用2.3，它仍然無法正常工作。

在服務器級別上通過CLI： /subsystem=jsf/:write-attribute(name=default-jsf-impl-slot,value=<JSF_IMPL_NAME>-<JSF_VERSION>)

在應用程序級別通過web.xml：

<context-param>
  <param-name>org.jboss.jbossfaces.JSF_CONFIG_NAME</param-name>
  <param-value>myfaces-2.2.12</param-value>
</context-param>

祝好運