SyntaxFix

[java] org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15

I'm porting a webapp from Tomcat 7 to another server with Tomcat 7 but with Java 8.

Tomcat starts successfully but in log catalina.out I get:

org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131)
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2049)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1931)
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1899)
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1885)
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1281)
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:855)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:346)
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5172)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:618)
    at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1100)
    at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1618)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)

What could be the problem?

This question is related to java eclipse tomcat java-8 classformatexception

The answer is

I've had the same problem when running my spring boot application with tomcat7:run

It gives error with the following dependency in maven pom.xml:

    <dependency>
        <groupId>org.junit.vintage</groupId>
        <artifactId>junit-vintage-engine</artifactId>
    </dependency>

SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/.m2/repository/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19

Jul 09, 2020 1:28:09 PM org.apache.catalina.startup.ContextConfig processAnnotationsJar
SEVERE: Unable to process Jar entry [module-info.class] from Jar [jar:file:/.m2/repository/org/apiguardian/apiguardian-api/1.1.0/apiguardian-api-1.1.0.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19

But when I correctly specify it in test scope, it does not give error:

    <dependency>
        <groupId>org.junit.vintage</groupId>
        <artifactId>junit-vintage-engine</artifactId>
        <scope>test</scope>
    </dependency>

To me, upgrading bcel to 6.0 fixed the problem.

Unable to process Jar entry [module-info.class] from Jar [jar:file:/xxxxxxxx/lombok-1.18.4.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19

1.update and append below argument in <root or instance tomcat folder>/conf/catalina.properties

org.apache.catalina.startup.ContextConfig.jarsToSkip=...,lombok-1.18.4.jar

2.clean and deploy the to-be-pulish project.

I got similar error (org.aspectj.apache.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15) while using aspectj 1.8.13. Solution was to align all compilation into jdk 8 and being careful not to put aspectj library's (1.6.13 for instance) other versions to buildpath/classpath.

I faced this issue with tomcat 7 + jdk 1.8

with java 1.7 and lower versions it's working fine.

window -> preferences -> java -> installed jre

in my case I changed jre1.8 to JDK 1.7

and accordingly modify project facet , select same java version as it's there in selected Installed JRE.

This issue is happening because you have installed jre1.8.0_101-1.8.0_101-fcs.i58.rpm as well jdk-1.7.0_80-fcs.x86_64.rpm. so just uninstall your jre rpm & restart your application. It should work out.

This was a Tomcat bug that resurfaced again with the Java 9 bytecode. The exact versions which fix this (for both Java 8/9 bytecode) are:

  • trunk for 9.0.0.M18 onwards
  • 8.5.x for 8.5.12 onwards
  • 8.0.x for 8.0.42 onwards
  • 7.0.x for 7.0.76 onwards

For me it worked, by removing the jars in question from the war. With Maven, I just had to exclude for example

    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jaxb-provider</artifactId>
        <version>${resteasy.version}</version>
        <exclusions>
            <exclusion>
                <groupId>com.sun.istack</groupId>
                <artifactId>istack-commons-runtime</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.jvnet.staxex</groupId>
                <artifactId>stax-ex</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.glassfish.jaxb</groupId>
                <artifactId>txw2</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.sun.xml.fastinfoset</groupId>
                <artifactId>FastInfoset</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

Update to Tomcat 7.0.58 (or newer).

See: https://bz.apache.org/bugzilla/show_bug.cgi?id=57173#c16

The performance improvement that triggered this regression has been reverted from from trunk, 8.0.x (for 8.0.16 onwards) and 7.0.x (for 7.0.58 onwards) and will not be reapplied.

Source: Stackoverflow.com

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