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  1. WildFly
  2. WFLY-12701

JSTL EL Evulation not working properly throwing NoClassDefFoundError

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Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • 16.0.0.Final
    • EE
    • None
    • 3
    • Hide

      create a jsp Page
      1. import JSTL core libraray <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
      2. create a bean object com.akash.Person and add
      <jsp:useBean id="person" class="com.akashPerson" scope="session"/>
      3 . write JSTL evaluation ${person.name}

      try to lunach the wildlfy server with deployed JSP in windows machine
      it will throw the above error mention in the description

      Probable Fix Required in class
      java.el.ImportHandler.java of jboss-el-api_3.0_spec.1.0.13.final.jar

          private Class<?> getClassFor(String className) {
        if (!notAClass.contains(className)) {
            try {
                return Class.forName(className, false, Thread.currentThread().getContextClassLoader());
            } catch (ClassNotFoundException ex) {
                notAClass.add(className);
            }
        }
        return null;
    }

      the above code will only work if class will throw ClassNotFoundException
      but in windows when it will try to create instance of a class
      ex – com.rendition.person instead of com.rendition.Person
      it will throw NoClassDefFoundError
      https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8024775
      https://bugs.openjdk.java.net/browse/JDK-8133522

      Fix can be to catch NoClassDefFoundError

      private Class<?> getClassFor(String className) {
        if (!notAClass.contains(className)) {
            try {
                return Class.forName(className, false, Thread.currentThread().getContextClassLoader());
            } catch (ClassNotFoundException ex || NoClassDefFoundError ex1) {
                notAClass.add(className);
            }
        }
        return null;
    }
      Show
      create a jsp Page 1. import JSTL core libraray <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> 2. create a bean object com.akash.Person and add <jsp:useBean id="person" class="com.akashPerson" scope="session"/> 3 . write JSTL evaluation ${person.name} try to lunach the wildlfy server with deployed JSP in windows machine it will throw the above error mention in the description Probable Fix Required in class java.el.ImportHandler.java of jboss-el-api_3.0_spec.1.0.13.final.jar private Class <?> getClassFor( String className) { if (!notAClass.contains(className)) { try { return Class .forName(className, false , Thread .currentThread().getContextClassLoader()); } catch (ClassNotFoundException ex) { notAClass.add(className); } } return null ; } the above code will only work if class will throw ClassNotFoundException but in windows when it will try to create instance of a class ex – com.rendition.person instead of com.rendition.Person it will throw NoClassDefFoundError https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8024775 https://bugs.openjdk.java.net/browse/JDK-8133522 Fix can be to catch NoClassDefFoundError private Class <?> getClassFor( String className) { if (!notAClass.contains(className)) { try { return Class .forName(className, false , Thread .currentThread().getContextClassLoader()); } catch (ClassNotFoundException ex || NoClassDefFoundError ex1) { notAClass.add(className); } } return null ; }
    • Workaround Exists
    • Hide

      use ${requestScope.person.name} instead of using ${person.name}

      Show
      use ${requestScope.person.name} instead of using ${person.name}
    • Medium

    Description

      Following is the stacktrace of server running on wildlfy

      2019/10/21 17:02:09 WARN  [org.jboss.modules.define] Failed to define class com.akash.web.beans.deviceBean in Module "deployment.sample.ear.sample1.war" from Service Module Loader: java.lang.NoClassDefFoundError: Failed to link com/akash/web/beans/deviceBean (Module "deployment.sample.ear.sample1.war" from Service Module Loader): com/akash/web/beans/deviceBean (wrong name: com/akash/web/beans/DeviceBean)
	at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_212]
	at java.lang.ClassLoader.defineClass(ClassLoader.java:763) [rt.jar:1.8.0_212]
	at java.lang.ClassLoader.defineClass(ClassLoader.java:839) [rt.jar:1.8.0_212]
	at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:424) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:555) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:339) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:126) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.Module.loadModuleClass(Module.java:731) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:247) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.9.0.Final]
	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116) [jboss-modules.jar:1.9.0.Final]
	at java.lang.Class.forName0(Native Method) [rt.jar:1.8.0_212]
	at java.lang.Class.forName(Class.java:348) [rt.jar:1.8.0_212]
	at javax.el.ImportHandler.getClassFor(ImportHandler.java:176) [jboss-el-api_3.0_spec-1.0.13.Final.jar:1.0.13.Final]
	at javax.el.ImportHandler.resolveClassFor(ImportHandler.java:165) [jboss-el-api_3.0_spec-1.0.13.Final.jar:1.0.13.Final]
	at javax.el.ImportHandler.resolveClass(ImportHandler.java:128) [jboss-el-api_3.0_spec-1.0.13.Final.jar:1.0.13.Final]
	at org.wildfly.extension.undertow.ImportedClassELResolver.getValue(ImportedClassELResolver.java:83)
	at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:96) [jastow-2.0.7.Final.jar:2.0.7.Final]
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at com.sun.el.parser.AstValue.getBase(AstValue.java:150) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at com.sun.el.parser.AstValue.getValue(AstValue.java:199) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at javax.el.ImportHandler.resolveClassFor(ImportHandler.java:161) [jboss-el-api_3.0_spec-1.0.13.Final.jar:1.0.13.Final]
	at javax.el.ImportHandler.resolveClass(ImportHandler.java:128) [jboss-el-api_3.0_spec-1.0.13.Final.jar:1.0.13.Final]
	at org.wildfly.extension.undertow.ImportedClassELResolver.getValue(ImportedClassELResolver.java:83)
	at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:96) [jastow-2.0.7.Final.jar:2.0.7.Final]
	at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:116) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at com.sun.el.parser.AstValue.getBase(AstValue.java:150) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at com.sun.el.parser.AstValue.getValue(AstValue.java:199) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226) [javax.el-impl-3.0.1-b08-jbossorg-1.jar:3.0.1-b08-jbossorg-1]
	at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:917) [jastow-2.0.7.Final.jar:2.0.7.Final]
	at org.apache.jsp.task_frames_jsp._jspService(task_frames_jsp.java:2641)

      Attachments

        1. sample-NCDFE-1.0.war
          5 kB
        2. sample-NCDFE-1.0.war
          5 kB
        3. simple-servlet.war
          45 kB

        Issue Links

          is blocked by

          Bug - A problem that impairs or prevents the functions of the product. JBEE-249 Types associated with wildcard imports fail to load on Windows

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. WFLY-12738 Upgrade jboss-jakarta-el-api_spec from 2.0.0.Final to 2.0.1.Final

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

          Activity

            People

              jperkins-rhn James Perkins
              akash551 Akash Gupta (Inactive)
              Akash Gupta Akash Gupta (Inactive)
              Akash Gupta (Inactive)
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              Dates

                Created:
                Updated: