Source of org.hibernate.validator.engine.ConfigurationImpl

Question

OK, I'm trying to get a validator working with a jsp form.. Have just started using maven, so it's all a bit new... what's the best way of locating which repository I should be selecting for the above class? I already have the following entries for validation:

    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>1.0.0.GA</version>
    </dependency>


    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator-annotation-processor</artifactId>
        <version>4.1.0.Final</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-validator</artifactId>
        <version>4.1.0.Final</version>
    </dependency>   

I tried loading hibernate itself, but that broke the build: I'm using eclipse for persistence, and building fails after dragging in a huge number of prerequisite libraries.

I figured that I should get a better strategy than just stabbing away with repositories..

Just to be clear: I'm getting the error:

java.lang.NoClassDefFoundError: Could not initialize class org.hibernate.validator.engine.ConfigurationImpl

This should be in the hibernate-validator dependency, so not behaving as I would expect.

Answer 1

Do you have slf4j-api on the classpath (this should be pulled in by HV, but just to make sure)?

The NoClassDefFoundError doesn't mean that ConfigurationImpl is not available, but it couldn't be loaded (typically due to problems in the static initializer or by imports of the loaded class which are not available).

A side note on using the annotation processor: instead of adding it as project dependency you can also use it via the Maven annotation processor plugin. That way you can't accidentally import classes from it in your project. The set-up is described in detail in the Hibernate Validator reference guide.