目标无法访问，标识符已解析为null [英] Target Unreachable, identifier resolved to null
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问题描述
我正在尝试在外部服务器上运行j2EE项目。项目是在NetBeans（6.7.1）中完成的，当我从那里运行时，一切都很顺利（我在GlassFish v3服务器上运行它）。但是当我从asadmin脚本运行GlassFish并给他我的项目的war文件时，它返回异常：
I'm trying to run j2EE project on external server. Project was made in NetBeans (6.7.1) and when I run it from there, everything's going fine (I run it on GlassFish v3 server). But when I run GlassFish from asadmin script and give him my project's war file, it returns exception:
Exception Details: javax.el.PropertyNotFoundException
Target Unreachable, identifier 'loginBean' resolved to null
我在寻找答案并没有帮助我。我想念Netbeans在GlassFish配置中有什么东西吗？
I was searching for answer and nothing helped me. Is there something I miss that Netbeans place in GlassFish configuration?
关于我发现的最常见的问题：
About most popular problems I found:
- loginBean在
中声明faces-config.xml - 我在<$ c $上设置了会话范围c> loginBean
- 我在
中没有，但我使用的是JSF1.2，而不是2.0@ManagedBean（）LoginBean.java - 我发现它可能是因为
myfaces.jar和sun的jsf，但我先删除了，错误仍然显示出来。 - 我试图把
javaee.jaringlassfish / lib目录（在一本书中已经写过）
- loginBean is declared in
faces-config.xml - I have set session scope on my
loginBean - I don't have
@ManagedBean()inLoginBean.java, but I use JSF1.2, not 2.0 - I found somewhere that it could be because of both
myfaces.jarand sun's jsf, but I removed first and the error was still showing up. - I was trying putting
javaee.jaringlassfish/libdirectory (in one book they have written so)
已编辑：可能会处理堆栈跟踪：
EDITED: Maybe stack trace will be handle:
com.sun.el.parser.AstValue.getTarget(AstValue.java:84)
com.sun.el.parser.AstValue.getType(AstValue.java:69)
com.sun.el.ValueExpressionImpl.getType(ValueExpressionImpl.java:194)
com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:92)
javax.faces.component.UIInput.getConvertedValue(UIInput.java:942)
javax.faces.component.UIInput.validate(UIInput.java:868)
javax.faces.component.UIInput.executeValidate(UIInput.java:1072)
javax.faces.component.UIInput.processValidators(UIInput.java:672)
javax.faces.component.UIForm.processValidators(UIForm.java:235)
javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1058)
javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:700)
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:76)
com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:431)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:337)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
DomainModels.Adds.UploadFilter.doFilter(UploadFilter.java:63)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:250)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:218)
org.apache.catalina.core.StandardWrapperValve.preInvoke(StandardWrapperValve.java:460)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:139)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:186)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:96)
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:187)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:142)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:719)
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:657)
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:651)
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1030)
org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:325)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:242)
com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:180)
com.sun.grizzly.http.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:633)
com.sun.grizzly.http.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:570)
com.sun.grizzly.http.DefaultProcessorTask.process(DefaultProcessorTask.java:827)
com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:152)
com.sun.enterprise.v3.services.impl.GlassfishProtocolChain.executeProtocolFilter(GlassfishProtocolChain.java:71)
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:103)
com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:89)
com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:67)
com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:56)
com.sun.grizzly.util.WorkerThreadImpl.processTask(WorkerThreadImpl.java:325)
com.sun.grizzly.util.WorkerThreadImpl.run(WorkerThreadImpl.java:184)
推荐答案
在我的情况下，原因完全不同。
In my case the reason was completely different.
我复制了一个包含serialVersionUID字段的类：
I copied a class including serialVersionUID field:
private static final long serialVersionUID = 5443351151396868724L;
所以我有两个不同的类和对象具有相同的serialVersionUID，这就是问题的线索。
so I had two different classes and objects with the same serialVersionUID and this was the clue of the problem.
这篇关于目标无法访问，标识符已解析为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！
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