Liquibase Hibernate Java 8支持

Question

I hope someone had the same problem before, and asking here is quicker than the trial and error.

I have a Java 8 project, where I am trying to use Liquibase, and generate my changelog from my Entities:

liquibase --changeLogFile=changeLog.yaml 
          --url=hibernate:spring:com.example.domain?dialect=org.hibernate.dialect.MySQL5InnoDBDialect 
          --logLevel=debug generateChangeLog

I got the following error:

SEVERE 11/04/15 09:55: liquibase: Failed to scan classpath for unlisted classes
liquibase.exception.DatabaseException: javax.persistence.PersistenceException: Failed to scan classpath for unlisted classes
...
Caused by: org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: file [.../Example.class]; ...

I compiled my project using Java 7, and liquibase works fine.

Liquibase Version: 3.3.2
Liquibase Hibernate4.2 Version: 3.5

As liquibase is open source, I can try and rebuild it using Java 8, but I have no idea if it will help.

Answer 1

The exception indicates that problem is in the class reader from Spring, are you using the recent Spring version? The recent spring works with all Java 6-8 so you should not have a problem if you upgrade the Spring.

Also, is your runtime Java 8 as well? You may have more than JVM installed, for example runtime is 7 but you use JDK8, you would be able to build your project using Java8 but of course it will not run in Java7 environment.

Answer 2

Eventually I have figured it out, though it was not so easy.

As Zielu pointed out, the problem was with Spring version. Not in my own project though, but in liquibase-hibernate.

So the solution was:

1. Download liquibase-hibernate source from github
2. Update hibernate and spring dependecies
3. Build liquibase-hibernate jar
4. Copy this freshly built jar to the liquibase CLI lib folder
5. In the liquibase CLI lib folder, update spring and hibernate libraries

Run liquibase as above.