java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.jetty.http.HttpGenerator

[Semenu Aggor]

Hello,

This is my first attempt to use Serenity but I hit a blocker at the very start... I'm using gradle to build my project and I have a target named 'regressionTest'

So to run my test I do:  $ gradle clean regressionTest

It all works fine until I added serenity as a dependency then I run into a no class def found error:

23 Jun 2015 11:26:09,286 [Thread-2] INFO  spark.webserver.SparkServer - == Spark has ignited ...

23 Jun 2015 11:26:09,287 [Thread-2] INFO  spark.webserver.SparkServer - >> Listening on 0.0.0.0:8080

Exception in thread "Thread-2" java.lang.NoClassDefFoundError: Could not initialize class org.eclipse.jetty.http.HttpGenerator

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Class.java:340)

at org.apache.logging.log4j.core.util.Loader.initializeClass(Loader.java:285)

at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:500)

at org.apache.logging.log4j.core.impl.ThrowableProxy.toExtendedStackTrace(ThrowableProxy.java:621)

at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:146)

at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:323)

at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:64)

at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:36)

at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:189)

at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:53)

at org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:52)

at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:104)

at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:97)

at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:428)

at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:407)

at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:410)

at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:365)

at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:112)

at org.apache.logging.slf4j.Log4jLogger.log(Log4jLogger.java:374)

at org.eclipse.jetty.util.log.JettyAwareLogger.log(JettyAwareLogger.java:607)

at org.eclipse.jetty.util.log.JettyAwareLogger.warn(JettyAwareLogger.java:431)

at org.eclipse.jetty.util.log.Slf4jLog.warn(Slf4jLog.java:69)

at org.eclipse.jetty.util.component.AbstractLifeCycle.setFailed(AbstractLifeCycle.java:212)

at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)

at spark.webserver.SparkServer.ignite(SparkServer.java:140)

at spark.SparkBase$3.run(SparkBase.java:368)

at java.lang.Thread.run(Thread.java:745)

My dependencies are as follows with serenity commented out:

dependencies {

    compile "org.slf4j:slf4j-api:1.7.12"

    compile "org.slf4j:log4j-over-slf4j:1.7.12"

    compile "org.slf4j:jcl-over-slf4j:1.7.12"

    compile "org.apache.logging.log4j:log4j:2.0.2"

    compile "org.apache.logging.log4j:log4j-core:2.0.2"

    compile "org.apache.logging.log4j:log4j-slf4j-impl:2.0.2"

    compile "org.apache.logging.log4j:log4j-web:2.0.2"

    compile "com.google.code.gson:gson:2.3.1"

    providedCompile "javax.servlet:javax.servlet-api:3.0.1"

    compile ("com.sparkjava:spark-core:2.2") {

        exclude group: "org.slf4j"

    }

    providedCompile "org.eclipse.jetty:jetty-server:9.0.2.v20130417"

    providedCompile "org.eclipse.jetty:jetty-webapp:9.0.2.v20130417"

    compile "com.wordnik:swagger-servlet_2.10:1.3.12"

    testCompile "junit:junit-dep:4.11"

    testCompile "org.hamcrest:hamcrest-all:1.3"

    testCompile "org.mockito:mockito-core:1.9.5"

//    testCompile "net.serenity-bdd:serenity-junit:1.0.58"

    compile "org.apache.httpcomponents:fluent-hc:4.5"

    compile "org.apache.httpcomponents:httpclient:4.5"

    compile "org.apache.httpcomponents:httpasyncclient:4.1"

    compile "org.apache.httpcomponents:httpmime:4.5"

    testCompile ("com.github.tomakehurst:wiremock:1.56") {

        exclude group: "org.apache.httpcomponents", module: "httpclient"

    }

}

My first thought is that Serenity is pulling a version of Jetty that conflicts with the version I've defined, so I tried to exclude Jetty coming in via Serenity

    testCompile ("net.serenity-bdd:serenity-junit:1.0.58") {

        exclude group: "org.seleniumhq.selenium"

        exclude group: "org.mortbay.jetty"

    }

but this didn't help.

Has anybody seen this before?  Any help would be greatly appreciated.

Many thanks in advance.

Semenu

[John Smart]

It's certainly a dependency conflict: try running the dependencyInsite task, e.g.

gradle -q dependencyInsight --configuration compile --dependency jetty

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[Semenu Aggor]

Thanks John.

A different version of Jetty was being transitively brought in via serenity-core -> htmlunit -> jetty websocket