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JSF ViewScope bean、viewParam、ajax 請求用 NULL 更新 MB 屬性

[英]JSF ViewScope bean, viewParam, ajax request update the MB attribute with NULL

 原文  2019-10-24 12:25:45  1   1    jsf/ payara/ jsf-2.3

問題描述

我有一個應用程序在 payara 4.1.9.2 上使用 JSF 2.2

 <context-param>
        <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
        <param-value>true</param-value>
 </context-param>

這里一切都按預期工作。

現在我正在嘗試將其更新為與 Mojarra 2.3.9.payara-p3 一起運行的 Payara 5.1.9.3。

The problem that I'm facing now is that if a ViewScope bean that has parameters set with f:viewParam on the creation of the bean is used to fire ajax requests the viewParams are lost (normal) and the model IS updated with NULL values .

所以最初 viewParams 工作正常，值取自 GET 並相應設置 model。當在 UPDATE_MODEL_VALUES 階段觸發第一個 ajax 請求時，bean 屬性值設置為舊值（可以），但是第二個 ajax 請求也在第 4 階段，屬性值更新為 NULL。

我知道有很多關於這個主題的帖子（f:viewParams 在 ajax 請求中丟失），但我不清楚的是：

為什么如果我禁用 javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL 指令一切正常，如果我不再啟用它？

PS。 Payara 4.1.2.174 和 Mojarra 2.2.14 正在工作

更新：

這里我們有 counter.xhtml 的視圖

<ui:composition template="../layouts/user.xhtml"
  xmlns="http://www.w3.org/1999/xhtml"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:ui="http://java.sun.com/jsf/facelets"
  xmlns:f="http://java.sun.com/jsf/core"
  xmlns:p="http://primefaces.org/ui"
  xmlns:sec="http://www.springframework.org/security/tags">

<f:metadata>
    <f:viewParam name="id" value="#{counterMB.id}"/>        
</f:metadata>

<ui:param name="currentMB" value="#{counterMB}"/>   
<ui:define name="title">Counter </ui:define>


<h:form id="myForm">
    Id is <h:outputText value="#{counterMB.id}" id="outputTxt"/>

    <p:commandLink 
            action="#{counterMB.incrementCounter()}"
            value="Increment"
            update="outputTxt"
    />

    <input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}"/>
</h:form>

和豆子：

@Named
@Scope("view")
public class CounterMB extends GenericMB implements Serializable{

    private static final long serialVersionUID = 1L;


    private Integer id;


    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        System.out.println("Setting the id with:"+id);
        this.id = id;
    }



    public void incrementCounter() {        

        id = id +1;

        // do something with id
        System.out.println("Id is="+Integer.toString(id));      
    }
}

和一些日志：

http://localhost:8080/myapp/counter.xhtml?id=4

(LifecycleListener.java:22) - START PHASE RESTORE_VIEW 1
(LifecycleListener.java:26) - END PHASE RESTORE_VIEW 1
(LifecycleListener.java:22) - START PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:26) - END PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:22) - START PHASE PROCESS_VALIDATIONS 3
(LifecycleListener.java:26) - END PHASE PROCESS_VALIDATIONS 3
(LifecycleListener.java:22) - START PHASE UPDATE_MODEL_VALUES 4

2019-10-24T13:43:52.573+0000|Info: Setting the id with:4
(LifecycleListener.java:26) - END PHASE UPDATE_MODEL_VALUES 4
(LifecycleListener.java:22) - START PHASE INVOKE_APPLICATION 5
(LifecycleListener.java:26) - END PHASE INVOKE_APPLICATION 5
(LifecycleListener.java:22) - START PHASE RENDER_RESPONSE 6
(LifecycleListener.java:26) - END PHASE RENDER_RESPONSE 6


//click on increment 1st time
(LifecycleListener.java:22) - START PHASE RESTORE_VIEW 1
(LifecycleListener.java:26) - END PHASE RESTORE_VIEW 1
(LifecycleListener.java:22) - START PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:26) - END PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:22) - START PHASE PROCESS_VALIDATIONS 3
(LifecycleListener.java:26) - END PHASE PROCESS_VALIDATIONS 3
(LifecycleListener.java:22) - START PHASE UPDATE_MODEL_VALUES 4
2019-10-24T13:44:07.013+0000|Info: Setting the id with:4
(LifecycleListener.java:26) - END PHASE UPDATE_MODEL_VALUES 4
(LifecycleListener.java:22) - START PHASE INVOKE_APPLICATION 5
2019-10-24T13:44:07.014+0000|Info: Id is=5
(LifecycleListener.java:26) - END PHASE INVOKE_APPLICATION 5
(LifecycleListener.java:22) - START PHASE RENDER_RESPONSE 6
(LifecycleListener.java:26) - END PHASE RENDER_RESPONSE 6


// click on icrement the second time
(LifecycleListener.java:22) - START PHASE RESTORE_VIEW 1
(LifecycleListener.java:26) - END PHASE RESTORE_VIEW 1
(LifecycleListener.java:22) - START PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:26) - END PHASE APPLY_REQUEST_VALUES 2
(LifecycleListener.java:22) - START PHASE PROCESS_VALIDATIONS 3
LifecycleListener.java:26) - END PHASE PROCESS_VALIDATIONS 3
(LifecycleListener.java:22) - START PHASE UPDATE_MODEL_VALUES 4
2019-10-24T13:44:12.548+0000|Info: Setting the id with:null
(LifecycleListener.java:26) - END PHASE UPDATE_MODEL_VALUES 4
(LifecycleListener.java:22) - START PHASE INVOKE_APPLICATION 5
2019-10-24T13:44:12.549+0000|Warning: #{counterMB.incrementCounter()}: java.lang.NullPointerException
javax.faces.FacesException: #{counterMB.incrementCounter()}: java.lang.NullPointerException
    at com.sun.faces.application.ActionListenerImpl.getNavigationOutcome(ActionListenerImpl.java:96)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:71)
    at org.springframework.faces.webflow.FlowActionListener.processAction(FlowActionListener.java:71)
    at org.springframework.faces.model.SelectionTrackingActionListener.processAction(SelectionTrackingActionListener.java:64)
    at org.primefaces.application.DialogActionListener.processAction(DialogActionListener.java:54)
    at javax.faces.component.UICommand.broadcast(UICommand.java:222)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:847)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1395)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:58)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:76)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:177)
    at javax.faces.webapp.FacesServlet.executeLifecyle(FacesServlet.java:707)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:451)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1628)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:339)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:209)
    at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:251)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:209)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.csrf.CsrfFilter.doFilterInternal(CsrfFilter.java:124)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:155)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:251)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:209)
    at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:251)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:209)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:755)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:575)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:159)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:371)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:238)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:520)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:217)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:182)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:156)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:218)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:95)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:260)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:177)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:109)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:88)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:53)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:524)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:89)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:94)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:33)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:114)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:569)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:549)
    at java.lang.Thread.run(Thread.java:748)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:76)
    at com.sun.faces.application.ActionListenerImpl.getNavigationOutcome(ActionListenerImpl.java:82)
    ... 82 more
Caused by: java.lang.NullPointerException
    at com.myapp.jsf.user.CounterMB.incrementCounter(CounterMB.java:34)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at javax.el.ELUtil.invokeMethod(ELUtil.java:263)
    at javax.el.BeanELResolver.invoke(BeanELResolver.java:494)
    at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:215)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:285)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:304)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:65)
    at com.sun.faces.application.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:66)
    ... 83 more

2019-10-24T13:44:12.551+0000|Info: INFO [http-thread-pool::http-listener-1(2)] (LifecycleListener.java:26) - END PHASE INVOKE_APPLICATION 5

一種解決方法是在 f:viewParam 上渲染 =“#{not facesContext.postback}”，但我認為這不是正確的行為。

更新：
At Kukeltje sugestion I have tried with a plain JSF app, with @ViewScoped and it works as expected.With this in isght I'll continue adding primefaces and spring and.... everything that I have in the current app to try simulate the現在的情況。

更新：

它與普通 jsf 一起工作的原因是 h:commandLink 沒有發出 ajax 請求。 我能夠用這些文件重現它：

`

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

    <h:head>
        <f:facet name="first">
            <meta http-equiv="X-UA-Compatible" content="IE=edge" />
            <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />         
        </f:facet>      
        <title> Simulator - Counter rest</title>
    </h:head>

    <h:body>    
        <f:metadata>
            <f:viewParam name="id" value="#{counterMB.id}"/>        
        </f:metadata>

        <h:form id="myForm">
            Id is <h:outputText value="#{counterMB.id}" id="outputTxt"/>

            <h:commandButton value="Increment"update="outputTxt">           
                <f:ajax listener="#{counterMB.incrementCounter()}" execute="myForm" render="outputTxt"/> 
            </h:commandButton>
        </h:form>         
    </h:body>
</html>

`
和這個豆子

import java.io.Serializable;

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

@Named
@ViewScoped
public class CounterMB implements Serializable{

    private static final long serialVersionUID = 1L;

    private Integer id; 

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        System.out.println("Setting the id with:"+id);
        this.id = id;
    }

    public void incrementCounter() {
        id = id +1;
        System.out.println("Id is="+Integer.toString(id));      
    }
}

1 個解決方案

解決方案1
 0 已采納  2019-11-04 20:36:05

我一直在搜索，發現了 3 件事（不確定這是答案，甚至是答案，但輸入評論太多了）

  1. 是使用 javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL 的“重復”導致 viewParam 為 null （未回答但有一些討論）
  2. 是一個似乎相關的鏈接includeViewParams=true 將 null model 值轉換為查詢字符串中的空字符串

  3. 是來自http://showcase.omnifaces.org/components/viewParam關於 JSF 2.3 中與 viewParam 和 null 相關的更改的一些信息。

    在 JSF 2.3 中，此問題已得到修復，並且僅在 javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL 上下文參數設置為 true 時有效。

這種組合讓我認為你“很幸運”它在 2.2 中工作（確定 id 在回發時不是“0”？）老實說，2.3 的行為“感覺”是正確的。

作為解決方案，您還可以在 setter 中添加“null”檢查

void setId(Integer id) {
    if (id != null) {
        this.id = id;
    }
}

或者你可以試試o:viewParam看看它是否有所作為。

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