CODEWITHSUNDEEP
javascalaunit-testingelasticsearch
sarah w
sarah w

Reputation: 3485

java.lang.NoClassDefFoundError: org/apache/logging/log4j/Logger

I want to perform unit testing in Elasticsearch for that I am using Java-test-framework
I am using Elasticsearch-1.6.0 and referring to these link for help https://www.elastic.co/guide/en/elasticsearch/reference/1.6/using-elasticsearch-test-classes.html https://github.com/elastic/elasticsearch/blob/master/core/src/test/java/org/elasticsearch/action/search/SearchRequestBuilderTests.java

here is the code 

class CampaignESTest extends ESTestCase {

  def getCLient():MockTransportClient={
     val settings = Settings.builder()
                .put(Environment.PATH_HOME_SETTING.getKey(), Files.createTempDir().toString())
                .build();
     val client = new MockTransportClient(settings);  
     client
  }
 }

class CampaignTestSearch extends PlaySpec{
  val client=new CampaignESTest

val response = client.prepareSearch("dbtest")
      .setTypes(CAMPAIGN_COLLECTION_NAME)
      .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
      .addFields("uuid","campaignName","artworkID","activationDate","_source")
      .setQuery(query)
      .execute()
      .actionGet()
  }

I am getting this exception 

  DeferredAbortedSuite:
[info] Exception encountered when attempting to run a suite with class name: org.scalatest.DeferredAbortedSuite *** ABORTED ***
[info]   java.lang.NoClassDefFoundError: org/apache/logging/log4j/Logger
[info]   at org.elasticsearch.common.logging.Loggers.getLogger(Loggers.java:101)
[info]   at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:92)
[info]   at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:78)
[info]   at org.elasticsearch.test.ESTestCase.<clinit>(ESTestCase.java:138)
[info]   at testcontrollers.campaign.CampaignTestSerach.<init>(CampaignTestSerach.scala:40)
[info]   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[info]   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[info]   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[info]   at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
[info]   at java.lang.Class.newInstance(Class.java:442)
[info]   ...
[info]   Cause: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger
[info]   at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
[info]   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
[info]   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
[info]   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
[info]   at org.elasticsearch.common.logging.Loggers.getLogger(Loggers.java:101)
[info]   at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:92)
[info]   at org.elasticsearch.bootstrap.BootstrapForTesting.<clinit>(BootstrapForTesting.java:78)
[info]   at org.elasticsearch.test.ESTestCase.<clinit>(ESTestCase.java:138)
[info]   at testcontrollers.campaign.CampaignTestSerach.<init>(CampaignTestSerach.scala:40)
[info]   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[info]   ...
[error] Uncaught exception when running testcontrollers.campaign.CampaignTestSerach: java.lang.NoClassDefFoundError: org/apache/logging/log4j/Logger

getting an exception on this line 

val client=new CampaignESTest

in class CampaignTestSearch

here are the dependencies in build.sbt file 

   "org.slf4j" % "slf4j-api" % "1.6.4",
                "org.elasticsearch" % "elasticsearch" % "1.6.0",
                "org.elasticsearch.test" % "framework" % "5.0.0" % "test",
                "org.apache.lucene" % "lucene-test-framework" % "4.10.4" % "test",
                "com.carrotsearch.randomizedtesting" % "randomizedtesting-runner" % "1.6.0" % "test",
                "org.apache.lucene" % "lucene-codecs" % "4.10.4" % "test",
                "org.apache.logging.log4j" % "log4j-core" % "2.8.2" ,
"org.apache.lucene" % "lucene-expressions" % "4.10.4",

i suspect the cause of the exception maybe due to some versions of the dependencies can anyone please help with the correct library dependency version to make it to work or is there something else which i am missing

Edit removed "test" from "org.apache.logging.log4j" % "log4j-core" % "2.8.2" Update build.sbt

"org.slf4j" % "slf4j-api" % "1.6.4",
                "org.elasticsearch" % "elasticsearch" % "1.6.0",
                "org.elasticsearch.test" % "framework" % "5.0.0" % "test",
                "org.apache.lucene" % "lucene-test-framework" % "4.10.4" % "test",
                "com.carrotsearch.randomizedtesting" % "randomizedtesting-runner" % "1.6.0" % "test",
                "org.apache.lucene" % "lucene-codecs" % "4.10.4" % "test",
                "org.apache.logging.log4j" % "log4j-core" % "2.8.2",
                "org.apache.logging.log4j" % "log4j-slf4j-impl" % "2.8.2" ,
                "org.apache.lucene" % "lucene-expressions" % "4.10.4",

Upvotes: 4

Views: 48772

Answers (2)

albert_nil
albert_nil

Reputation: 1658

to fix your issue, add following missing dependency:

  • org.apache.logging.log4j:log4j-api:2.8.2

aside, not directly related to issue, add following dependency so that your own calls to slf4j api get directed to log4j2 implementation also:

  • org.apache.logging.log4j:log4j-slf4j-impl:2.8.2

ensure no other log implementation is present on classpath.

note: the "extra" suggestion i made is based in that you want to redirect all your log calls to log4j, no matter if you are calling slf4j api or directly log4j. If not, please state which log implementatjon you would like, since then the OP listed depenedencies is also missing something.

Upvotes: 10

Anshul Sharma
Anshul Sharma

Reputation: 3522

Caused By: Cause: java.lang.ClassNotFoundException: org.apache.logging.log4j.Logger error indicates that, JVM is not able to found org.apache.log4j.Logger class in your project or application CLASSPATH. may be the reason of error is missing log4j.jar file into you project or class path. so you need to use below dependency: 

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.25</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>

Upvotes: 0

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