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我现在在带有导航的 h:commandButton 上遇到 ViewScope 问题。我不确定 CDI 1.0 是否支持 JSF 2.2

错误

May 28, 2020 5:57:07 PM com.sun.faces.context.ExceptionHandlerImpl throwIt
INFO: Exception when handling error trying to reset the response.
java.lang.NullPointerException
    at com.sun.faces.application.view.ViewScopeContextManager.destroyBeans(ViewScopeContextManager.java:171)
    at com.sun.faces.application.view.ViewScopeContextManager.clear(ViewScopeContextManager.java:122)
    at com.sun.faces.application.view.ViewScopeManager.processPreDestroyViewMap(ViewScopeManager.java:335)
    at com.sun.faces.application.view.ViewScopeManager.processEvent(ViewScopeManager.java:240)
    at com.sun.faces.application.view.ViewScopeEventListener.processEvent(ViewScopeEventListener.java:68)
    at javax.faces.event.SystemEvent.processListener(SystemEvent.java:108)
    at javax.faces.event.ComponentSystemEvent.processListener(ComponentSystemEvent.java:118)
    at com.sun.faces.application.ApplicationImpl.processListeners(ApplicationImpl.java:2169)
    at com.sun.faces.application.ApplicationImpl.invokeListenersFor(ApplicationImpl.java:2142)
    at com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:294)
    at javax.faces.component.UIViewRoot$ViewMap.clear(UIViewRoot.java:1850)
    at com.sun.faces.application.NavigationHandlerImpl.clearViewMapIfNecessary(NavigationHandlerImpl.java:432)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:249)
    at com.sun.faces.application.NavigationHandlerImpl.handleNavigation(NavigationHandlerImpl.java:183)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:132)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:658)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

Tomcat 8.5 环境test.xhtml ->“ajax working”按钮工作的最小、可重现示例，“h:commandButton non-ajax”按钮失败

  1. Mojarra 版本 jsf-api-2.2.13 和 jsf-impl-2.2.13 失败
  2. Mojarra 版本 javax.faces-2.2.20 失败
  3. 适用于 myfaces 版本 myfaces-api-2.2.12 和 myfaces-impl-2.2.12
  4. 适用于omnifaces版本omnifaces-1.8.3 org.omnifaces.cdi.ViewScoped（需要添加jar validation-api-1.1.0.Final）

测试视图.java

package com.lean.demo;

import java.io.Serializable;

import javax.faces.view.ViewScoped;
import javax.inject.Named;

@Named
@ViewScoped
public class TestView implements Serializable {

    public String goNextCase1() {
        System.out.println("goNextCase1");
        // Add navigation-case with <redirect />
        return "PageTestView2";
    }

    public String goNextCase2() {
        System.out.println("goNextCase2");
        return "test2.xhtml?faces-redirect=true";
    }

    public String goNextCase3() {
        System.out.println("goNextCase3");
        return "test2.xhtml";
    }
}

测试.xhtml

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html">

<h:head>
    <title>Mojarra JSF 2.2 with openwebbeans 1.1.0 (CDI 1.0)</title>
</h:head>
<h:body>

    <h:form id="frmTest">
        <h2>
            <h:commandButton value="Case 1" action="#{testView.goNextCase1()}">
            </h:commandButton>
        </h2>
        <h2>
            <h:commandButton value="Case 2" action="#{testView.goNextCase2()}">
            </h:commandButton>
        </h2>
        <h2>
            <h:commandButton value="Case 3" action="#{testView.goNextCase3()}">
            </h:commandButton>
        </h2>
    </h:form>
</h:body>
</html>

库中的罐子

commons-beanutils-1.9.2.jar
commons-collections-3.2.2.jar
commons-digester-1.8.jar
commons-logging-1.1.1.jar
geronimo-atinject_1.0_spec-1.0.jar
geronimo-interceptor_1.1_spec-1.0.jar
geronimo-jcdi_1.0_spec-1.0.jar
javassist-3.12.0.GA.jar
jsf-api-2.2.13.jar
jsf-impl-2.2.13.jar
openwebbeans-impl-1.1.0.jar
openwebbeans-jsf-1.1.0.jar
openwebbeans-resource-1.1.0.jar
openwebbeans-spi-1.1.0.jar
openwebbeans-web-1.1.0.jar
scannotation-1.0.2.jar
4

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