尝试在Glassfish 4上使用CDI导致javax.el.PropertyNotFoundException：目标不可访问，标识符'indexMB'解析为null [英] Trying to use CDI on Glassfish 4 results in javax.el.PropertyNotFoundException: Target Unreachable, identifier 'indexMB' resolved to null

问题描述

我在单个页面上发生错误，并且在单击SUBMIT按钮后发生唯一错误。

javax.el .PropertyNotFoundException：目标不可达，标识符'indexMB'解析为null

我遵循主题JSF2表单提交目标无法访问，标识符'myModel'解析为空只提交，但没有帮助我。

任何帮助都将非常有用。

按照我的设置和我的文件：

• Glassfish 4


• Primefaces 3.5


• commons-fileupload 1.3


• commons-io 2.4

index.xhtml

 < f：loadBundle basename =i18nvar =bundle/ > 
< h：head> 
< title>＃{bundle ['index_tit乐]}< /标题> 
< / h：头> 
< h：body> 
＃{bundle ['index_appname']} 
< br /> 
< h：form id =frmIndex> 
< p：panelGrid columns =2> 
< p：outputLabel for =uservalue =＃{bundle ['lblUser']}/> 
< p：inputText id =uservalue =＃{indexMB.user}/> 
 
< p：outputLabel for =passwordvalue =＃{bundle ['lblPassword']}/> 
 < / p：panelGrid> 
 < / h：表格> 
< / h：body> 
  

IndexMB.java

  @ManagedBean（indexMB）
 @RequestScoped 
公共类IndexMB {
 
私有字符串密码; 
私人字符串用户; 
 $ b $ public public IndexMB（）{
} 
 
 public String loginTest（）{
 ... 
} 
 
 // getters and setters 
} 
  

log（Glassfish）

  javax.el.PropertyNotFoundException：/index.xhtml @ 18,66 value =＃{indexMB.user}：Target Unreachable，identifier'indexMB '解析为null 
 at com.sun.faces.facelets.el.TagValueExpression.getType（TagValueExpression.java:100）
 at org.primefaces.renderkit.InputRenderer.findImplicitConverter（InputRenderer.java:170） 
 at org.primefaces.renderkit.InputRenderer.findConverter（InputRenderer.java:190）
 at org.primefaces.renderkit.InputRenderer.getConvertedValue（InputRenderer.java:196）
 at javax.faces .component.UIInput.getConvertedValue（UIInput.java:1046）
位于javax.faces.component.UIInput.validate（UIInput.java:976）
位于javax.faces.component.UIInput.executeValidate（UIInput .java：1249）在javax.faces.component.UIInput.proce中为
 （UIForm.java:253）
 at javax.faces.component.UIForm.processValidators（UIForm.java:253）
 at javax.faces.component.UIComponentBase.processValidators（UIComponentBase.java:1261）
 at javax.faces.component.UIForm.processValidators（UIForm.java:253） 
在javax.faces.component.UIComponentBase.processValidators（UIComponentBase.java:1261）在javax.faces.component.UIComponentBase.processValidators 
（UIComponentBase.java:1261）
在javax.faces .component.UIViewRoot.processValidators（UIViewRoot.java:1195）
 at com.sun.faces.lifecycle.ProcessValidationsPhase.execute（ProcessValidationsPhase.java:76）
 at com.sun.faces.lifecycle.Phase .doPhase（Phase.java:101）
在com.sun.faces.lifecycle.LifecycleImpl.execute（LifecycleImpl.java:198）
在javax.faces.webapp.FacesServlet.service（FacesServlet.java ：646）
 at org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1682）
 at org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:318）
在org .apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:160）
 at org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:734）
 at org.apache.catalina .core.StandardPipeline.invoke（StandardPipeline.java:673）
 at com.sun.enterprise.web.WebPipeline.invoke（WebPipeline.java:99）
 at org.apache.catalina.core.StandardHostValve .invoke（StandardHostValve.java:174）
 at org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:357）
 at org.apache.catalina.connector.CoyoteAdapter.service（CoyoteAdapter的.java：260）在com.sun.enterprise.v3.services.impl.ContainerMapper.service（ContainerMapper.java:188 
）
。在org.glassfish.grizzly.http.server.HttpHandler.runService （HttpHandler.java:191）在org.glassfish.grizzly.http.server.HttpHandler.doHandle 
（HttpHandler.java:168）
在org.glassfish.grizzly.http.server.HttpServerFilter.handleRead （HttpServerFilter.java:189）org.gla 
 ssfish.grizzly.filterchain.ExecutorResolver $ 9.execute（ExecutorResolver.java:119）
在org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter（DefaultFilterChain.java:288）
在org.glassfish.grizzly .filterchain.DefaultFilterChain.executeChainPart（DefaultFilterChain.java:206）
在org.glassfish.grizzly.filterchain.DefaultFilterChain.execute（DefaultFilterChain.java:136）
在org.glassfish.grizzly.filterchain.DefaultFilterChain .process（DefaultFilterChain.java:114）
 at org.glassfish.grizzly.ProcessorExecutor.execute（ProcessorExecutor.java:77）
 at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent（TCPNIOTransport的.java：838）
处org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0 org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent（AbstractIOStrategy.java:113）
（WorkerThreadIOStrategy.java:115 ）
在org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access $ 100（WorkerThreadIOStr ategy.java:55）
在org.glassfish.grizzly.strategies.WorkerThreadIOStrategy $ WorkerThreadRunnable.run（WorkerThreadIOStrategy.java:135）
在org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.doWork（ AbstractThreadPool.java:564）
在org.glassfish.grizzly.threadpool.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:544）
在java.lang.Thread.run（Thread.java:724） 
。通过引起：javax.el.PropertyNotFoundException：目标不可达，识别符 'indexMB' 在com.sun.el.parser.AstValue.getTarget解析为空
（AstValue.java:174）
在com.sun.el.parser.AstValue.getType（AstValue.java:86）
在com.sun.el.ValueExpressionImpl.getType（ValueExpressionImpl.java:201）
在org.jboss.weld .el.WeldValueExpression.getType（WeldValueExpression.java:93）
在com.sun.faces.facelets.el.TagValueExpression.getType（TagValueExpression.java:98）
 ... 43多个
  

web.xml

 <？xml version =1.0encoding =UTF-8？> 
< web-app version =3.0xmlns =http://java.sun.com/xml/ns/javaeexmlns：xsi =http://www.w3.org/2001/ XMLSchema-instancexsi：schemaLocation =http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd\"> 
< context-param> 
< param-name> javax.faces.PROJECT_STAGE< / param-name> 
<参数值>开发< /参数值> 
< / context-param> 
< servlet> 
< servlet-name> Faces Servlet< / servlet-name> 
< servlet-class> javax.faces.webapp.FacesServlet< / servlet-class> 
<加载启动> 1< /加载启动> 
< / servlet> 
< servlet-mapping> 
< servlet-name> Faces Servlet< / servlet-name> 
< url-pattern> / faces / *< / url-pattern> 
< / servlet-mapping> 
< session-config> 
< session-timeout> 
 30 
< / session-timeout> 
< / session-config> 
< welcome-file-list> 
< welcome-file> faces / index.xhtml< / welcome-file> 
< / welcome-file-list> 
< / web-app> 
  

faces-config.xml

 <？xml version ='1.0'encoding ='UTF-8'？> 
  xmlns =http://xmlns.jcp.org/xml/ns/javaee
 xmlns：xsi =http：// www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/的JavaEE /网络facesconfig_2_2.xsd> 
 
< application> 
< locale-config> 
< default-locale> pt_BR< / default-locale> 
< supported-locale> en< / supported-locale> 
< supported-locale> fr< / supported-locale> 
< / locale-config> 
< / application> 
< / faces-config> 
  

beans.xml

 <？xml version =1.0encoding =UTF-8？> 
< beans xmlns =http://java.sun.com/xml/ns/javaee
 xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance 
 xsi：schemaLocation =http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd\"> 
< / beans> 
  

解决方案

您的bean真的不是CDI bean问题是由混淆进口引起的。因此，请尝试

  @ javax.inject.Named //默认为indexMB
 @ javax.enteprise.context。 RequestScoped 
 public class IndexMB {
 //这里的其余班级
} 
  

I am getting an error on a single page, and the only error occurs after I click the SUBMIT button.

javax.el.PropertyNotFoundException: Target Unreachable, identifier 'indexMB' resolved to null

I followed the recommendations of the topic JSF2 form submit " Target Unreachable, identifier 'myModel' resolved to null ONLY on submit but did not help me.

Any help will be very useful.

Follow my setup and my files:

• Glassfish 4
• Primefaces 3.5
• commons-fileupload 1.3
• commons-io 2.4

index.xhtml

<f:loadBundle basename="i18n" var="bundle" />
<h:head>
    <title>#{bundle['index_title']}</title>
</h:head>
<h:body>
    #{bundle['index_appname']}
    <br />
    <h:form id="frmIndex">
        <p:panelGrid columns="2">
            <p:outputLabel for="user" value="#{bundle['lblUser']}" />
            <p:inputText id="user" value="#{indexMB.user}" />

            <p:outputLabel for="password" value="#{bundle['lblPassword']}" />
            <p:password id="password" value="#{indexMB.password}" />
        </p:panelGrid>
        <p:commandButton action="#{indexMB.loginTest}" value="#{bundle['btn_login']}" />
    </h:form> 
</h:body>

IndexMB.java

@ManagedBean ("indexMB")
@RequestScoped
public class IndexMB {

private String password;
private String user;

public IndexMB() {
}

public String loginTest(){
   ...
}

// getters and setters
}

log (Glassfish)

javax.el.PropertyNotFoundException: /index.xhtml @18,66 value="#{indexMB.user}": Target Unreachable, identifier 'indexMB' resolved to null
    at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:100)
    at org.primefaces.renderkit.InputRenderer.findImplicitConverter(InputRenderer.java:170)
    at org.primefaces.renderkit.InputRenderer.findConverter(InputRenderer.java:190)
    at org.primefaces.renderkit.InputRenderer.getConvertedValue(InputRenderer.java:196)
    at javax.faces.component.UIInput.getConvertedValue(UIInput.java:1046)
    at javax.faces.component.UIInput.validate(UIInput.java:976)
    at javax.faces.component.UIInput.executeValidate(UIInput.java:1249)
    at javax.faces.component.UIInput.processValidators(UIInput.java:712)
    at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
    at javax.faces.component.UIForm.processValidators(UIForm.java:253)
    at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
    at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1261)
    at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:1195)
    at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
    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:646)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:724)
    Caused by: javax.el.PropertyNotFoundException: Target Unreachable, identifier 'indexMB' resolved to null
    at com.sun.el.parser.AstValue.getTarget(AstValue.java:174)
    at com.sun.el.parser.AstValue.getType(AstValue.java:86)
    at com.sun.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:201)
    at org.jboss.weld.el.WeldValueExpression.getType(WeldValueExpression.java:93)
    at com.sun.faces.facelets.el.TagValueExpression.getType(TagValueExpression.java:98)
    ... 43 more

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
</web-app>

faces-config.xml

<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2"
        xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">

    <application>
        <locale-config>
            <default-locale>pt_BR</default-locale>
            <supported-locale>en</supported-locale>
            <supported-locale>fr</supported-locale>
        </locale-config>
    </application>
</faces-config>

beans.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>

解决方案

Your bean is really not a CDI bean I guess your problem is caused by mixing up the imports. So try

 @javax.inject.Named //defaults to "indexMB"
 @javax.enteprise.context.RequestScoped
 public class IndexMB {
      //rest of your class here
 }

这篇关于尝试在Glassfish 4上使用CDI导致javax.el.PropertyNotFoundException：目标不可访问，标识符'indexMB'解析为null的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！