Hibernate Error - Could not build ClassFile

Question

So I am kind of at a dead end here. Have been troubleshooting for a half a day now. Using Hibernate JPA persistence in a Java application.

When running code from within IDE (IntelliJ 2018.1.5) it runs fine, however, when trying to run from jar via command line I get the following error (full stacktrace):

Exception in thread "main" org.hibernate.boot.archive.spi.ArchiveException: Could not build ClassFile
        at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.toClassFile(ClassFileArchiveEntryHandler.java:64)
        at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.handleEntry(ClassFileArchiveEntryHandler.java:47)
        at org.hibernate.boot.archive.internal.JarFileBasedArchiveDescriptor.visitArchive(JarFileBasedArchiveDescriptor.java:147)
        at org.hibernate.boot.archive.scan.spi.AbstractScannerImpl.scan(AbstractScannerImpl.java:47)
        at org.hibernate.boot.model.process.internal.ScanningCoordinator.coordinateScan(ScanningCoordinator.java:75)
        at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.prepare(MetadataBuildingProcess.java:98)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:228)
        at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.<init>(EntityManagerFactoryBuilderImpl.java:170)
        at org.hibernate.jpa.boot.spi.Bootstrap.getEntityManagerFactoryBuilder(Bootstrap.java:76)
        at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilder(HibernatePersistenceProvider.java:181)
        at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:129)
        at org.hibernate.jpa.HibernatePersistenceProvider.getEntityManagerFactoryBuilderOrNull(HibernatePersistenceProvider.java:71)
        at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:52)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
        at com.gsr.metrics.repository.BaseRepository.<init>(BaseRepository.java:10)
        at com.gsr.metrics.repository.ProcessHistoryRepository.<init>(ProcessHistoryRepository.java:11)
        at com.gsr.metrics.FileProcessor.<init>(FileProcessor.java:24)
        at com.gsr.metrics.PostProcessor.run(PostProcessor.java:42)
        at com.gsr.metrics.PostProcessor.main(PostProcessor.java:28) Caused by: java.io.IOException: invalid constant type: 19 at 5
        at javassist.bytecode.ConstPool.readOne(ConstPool.java:1241)
        at javassist.bytecode.ConstPool.read(ConstPool.java:1172)
        at javassist.bytecode.ConstPool.<init>(ConstPool.java:185)
        at javassist.bytecode.ClassFile.read(ClassFile.java:807)
        at javassist.bytecode.ClassFile.<init>(ClassFile.java:148)
        at org.hibernate.boot.archive.scan.spi.ClassFileArchiveEntryHandler.toClassFile(ClassFileArchiveEntryHandler.java:61)    
 ... 19 more

Build configuration is Maven and this is the Hibernate dependency entry

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.gsr.metrics</groupId>
    <artifactId>PostProcessor</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.gsr.metrics.PostProcessor</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencies>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.12.Final</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.27</version>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>1.4.197</version>
        </dependency>

        <dependency>
            <groupId>com.opencsv</groupId>
            <artifactId>opencsv</artifactId>
            <version>4.1</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.4</version>
        </dependency>

        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.2.0</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.11.0</version>
        </dependency>

        <dependency>
            <groupId>com.beust</groupId>
            <artifactId>jcommander</artifactId>
            <version>1.72</version>
        </dependency>
    </dependencies>

</project>

I've tried different Hibernate versions but in all cases have gotten the same error.

Problem occurs when this statement is executed

em = Persistence.createEntityManagerFactory(persistenceUnitName).createEntityManager();

Answer 1

I've stumbled upon the same problem and I found a similar solution. I was using log4j-core 2.11.1 and got the same error when running the application from the jar. I've followed your solution and changed the verison to log4j-core 2.8.2. After that I've still got an error, but this time it was a lack of dependeny: apparently it was missing one of the "com.fasterxml.jackson.core" package classes. So I've added the dependency (version 2.9.6) and now it's running.

Hope this helps some one because it was a very frustrating error.

Answer 2

After a great deal of trial and error I isolated the issue to some type of library conflict with log4j. Don't ask me what the exact problem was but changing the versions of one of the two made the problem go away. Did not have the time to perform any sort of detailed analysis on the underlying reason.