CODEWITHSUNDEEP
java
Bala Ramachandran
Bala Ramachandran

Reputation: 889

java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory

I am getting the error as mentioned below, while running the feed utility. I am trying to load an image "logo.png". The slf4j jar file is also available in the runtime classpath. But still I am getting this error. 

Oct 16, 2012 7:34:11 PM com.ibm.commerce.foundation.dataload.FeedRetriever  invokeDataLoad
SEVERE: An error occurred while performing data load.
Throwable occurred: com.ibm.commerce.foundation.dataload.exception.DataLoadException: 
An error occurred while executing the data load. 

java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory

    at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:664)
    at com.ibm.commerce.content.commands.DataLoadInvoker.execute(DataLoadInvoker.java:101)
    at com.ibm.commerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:244)
    at com.ibm.commerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172)
    at com.ibm.commerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321)
Caused by: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
    at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:488)
    ... 4 more
Caused by: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
    at org.apache.wink.client.ClientConfig.<clinit>(ClientConfig.java:52)
    at java.lang.J9VMInternals.initializeImpl(Native Method)
    at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
    at java.lang.J9VMInternals.initialize(J9VMInternals.java:167)
    at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getFeed(AtomReader.java:104)
    at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:147)
    at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:1)
    at com.ibm.commerce.foundation.dataload.feedreader.BaseFeedReader.init(BaseFeedReader.java:252)
    at com.ibm.commerce.foundation.dataload.AbstractBusinessObjectLoader.initializeDataReaders(AbstractBusinessObjectLoader.java:1344)
    at com.ibm.commerce.foundation.dataload.AbstractBusinessObjectLoader.init(AbstractBusinessObjectLoader.java:369)
    at com.ibm.commerce.foundation.dataload.BusinessObjectLoader.init(BusinessObjectLoader.java:65)
    at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:431)
    ... 4 more
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.lang.ClassNotFoundException.<init>(ClassNotFoundException.java:76)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:396)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:660)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:626)
    ... 16 more
Oct 16, 2012 7:34:11 PM com.ibm.commerce.foundation.dataload.FeedRetriever main
SEVERE: An error occurred while performing data load.
Throwable occurred: com.ibm.commerce.foundation.dataload.exception.DataLoadException: An error has occurred.  If this problem persists, contact product support.
    at com.ibm.commerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:247)
    at com.ibm.commerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172)
    at com.ibm.commerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321)

Upvotes: 88

Views: 469546

Answers (28)

Zafar Naqvi
Zafar Naqvi

Reputation: 629

You can try the maven-assembly-plugin to create fat jars. Make sure the dependencies are not enclosed in the tags.

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>3.4.2</version>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                    <archive>
                        <manifest>
                            <mainClass>your.main.class</mainClass> <!-- Replace with your main class -->
                        </manifest>
                    </archive>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

Upvotes: 0

Mr. Clear
Mr. Clear

Reputation: 652

After trying everything mentioned here, this maven dependency helped me:

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.23.1</version>
</dependency>

Upvotes: 0

Lu&#237;s Soares
Lu&#237;s Soares

Reputation: 6203

Add a SLF4J implementation (as you only have its API):

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>2.0.12</version>
</dependency>

Upvotes: 53

Biswa
Biswa

Reputation: 21

I have the same issue for zookeeper start up.

# sh /opt/zookeeper-3.4.13-1.hardtop.0.9.1/bin/zkServer.sh start-foreground
ZooKeeper JMX enabled by default
Using config: /opt/zookeeper-3.4.13-1.hardtop.0.9.1/bin/../conf/zoo.cfg
Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
    at org.apache.zookeeper.server.quorum.QuorumPeerMain.<clinit>(QuorumPeerMain.java:67)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
    at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    ... 1 more

But the class is already there as part of other slf4j jars:

# grep LoggerFactory lib/*jar
Binary file lib/log4j-1.2-api-2.17.1.jar matches
Binary file lib/log4j-slf4j-impl-2.17.1.jar matches
Binary file lib/netty-all-4.1.30.Final.jar matches

Upvotes: 1

Sandun Susantha
Sandun Susantha

Reputation: 1140

If it is not maven project then make sure the jar file is inside the project folder. If it is a maven project then make sure it's in the pom.xml.

Upvotes: 0

Yoshita Mahajan
Yoshita Mahajan

Reputation: 453

If you are facing java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory

Add slf4j-log4j12 jar in the library folder of the project

Upvotes: -1

Mohammad Amin Rezaeizadeh
Mohammad Amin Rezaeizadeh

Reputation: 2627

The perfect solution which works undoubtedly is to just add these packages to your app:
https://mvnrepository.com/artifact/org.slf4j/slf4j-api/1.7.2
http://archive.apache.org/dist/logging/log4j/1.2.16/

after adding so you may encounter following WARNING which you can simply ignore!

SLF4J: No SLF4J providers were found. SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details.

credits: https://www.javacodegeeks.com/2018/02/fix-exception-thread-main-java-lang-noclassdeffounderror-org-slf4j-loggerfactory-java.html

Upvotes: 2

user3437460
user3437460

Reputation: 17454

I tried other solutions and the exception didn't go away. So I decompiled the entire jose4j 0.6.5 jar with a Java Decomplier and look at its pom.xml.

I realised it has a specific dependency on slf4j-api, version 1.7.21: enter image description here

So in my project's pom.xml, I added the exact same dependency, updated my Maven project so that it downloads this jar into my repository and the exception was gone.

However it may bring up another error caused by slf4j itself:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

To overcome this issue, I added the following into my project's pom.xml. So altogether you need to add the following to your pom.xml and my jose4j ran without anymore issues:

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.21</version>
</dependency>   

<dependency>
   <groupId>org.slf4j</groupId>
   <artifactId>slf4j-simple</artifactId>
   <version>1.6.4</version>
</dependency>

Remember to update your Maven project after amending your pom.xml.

(Right-click Project folder in Eclipse -> Maven -> Update Project..)

Upvotes: 8

MarkAddison
MarkAddison

Reputation: 565

I believe the answer is outlined on the slf4j web-site (Failed to load class org.slf4j.impl.StaticLoggerBinder)

For a very quick solution I suggest adding no-operation (NOP) logger implementation (slf4j-nop.jar)

For example, if using maven:

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-nop</artifactId>
    <version>${slf4j-nop-version}</version>
</dependency>

Upvotes: 1

SHIVA
SHIVA

Reputation: 706

First, check the dependency hierarchy than to exclude all slf4j jars from other dependencies and add separate slf4j as dependencies.

Upvotes: 0

Mir Kazim Ali Tabrez
Mir Kazim Ali Tabrez

Reputation: 451

I was facing a similar issue and below line fixed the issue for me.

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

Edit: I realized that I was using spring boot and the version of the dependency was getting pulled from spring-boot-starter-parent.

Upvotes: 4

Shanu Shine
Shanu Shine

Reputation: 51

Add the following jars to the class path or lib folder

  1. slf4j-api-1.7.2.jar
  2. slf4j-jdk14-1.7.2.jar

Upvotes: 3

Mike
Mike

Reputation: 5

this worked for me /properties/maven uncheck resolve dependencies from Workspace projects.

Upvotes: 0

CloudyMarble
CloudyMarble

Reputation: 37566

The LoggerFactory class is msising according to the error message:

java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory

Apparently, the slf4j.jar file is not getting loaded for some reason.

Upvotes: -4

Enamul Haque
Enamul Haque

Reputation: 843

You can use bellow dependency

<dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>1.7.7</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.7.7</version>
    </dependency>

Upvotes: 2

Zarko Eeternal
Zarko Eeternal

Reputation: 537

When you copy dependency from maven repository there is:

<scope>test</scope>

Try to remove it from dependencies in pom.xml like this.

<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.3</version>
</dependency>

This works for me. I hope it would be helpful for someone else.

Upvotes: 0

PANKAJ MALI
PANKAJ MALI

Reputation: 1

You need slf4j-api library and slf4j-log4j12-1.7.25 jar. Copy this jars in your project-> WEBINF-> lib folder and in tomcat server lib folder to execute successfully.

Upvotes: 0

Nagappan
Nagappan

Reputation: 356

When we use the slf4j api jar, we need any of the logger implementations like log4j. On my system, we have the complete set and it works fine.

1. slf4j-api-1.5.6.jar
2. slf4j-log4j12-1.5.6.jar
3. **log4j-1.2.15.jar**

Upvotes: 1

hashguard
hashguard

Reputation: 463

get the compatible version of this jar slf4j-jdk14 and add it as a dependency. this solved the problem for me.

Upvotes: 0

Anuj Pandey
Anuj Pandey

Reputation: 173

I also had the similar problem. I had a maven project and was testing rabbitmq. Firstly it showed me the similar error then I added all the SLF4J dependencies in the maven project and then error changed to "Maven SLF4J: Class path contains multiple SLF4J bindings". Here is the complete list of dependencies from pom.xlm 

<dependencies>
    <dependency>
        <groupId>com.rabbitmq</groupId>
        <artifactId>amqp-client</artifactId>
        <version>4.0.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.0</version>
    </dependency>
    <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-simple</artifactId>
       <version>1.7.21</version>
       <scope>compile</scope>
    </dependency>
</dependencies>

It worked finally.

Upvotes: 6

isuru chathuranga
isuru chathuranga

Reputation: 1015

To be more specific if you are missing the class com.vaadin.external.org.slf4j.LoggerFactory add the below dependency.

<dependency>
    <groupId>com.vaadin.external.slf4j</groupId>
    <artifactId>vaadin-slf4j-jdk14</artifactId>
    <version>1.6.1</version>
</dependency>

If you are missing any other org.slf4j.LoggerFactory, just go to Maven central class name search and search for the exact class name to determine what exact dependency you are missing.

Upvotes: 2

Rashad Saif
Rashad Saif

Reputation: 1399

Right click on project properties and follow below steps Project Properties" --> "Deployment Assembly", adding "Java Build Path Entries -> Maven Dependencies

Upvotes: 9

li_developer
li_developer

Reputation: 179

You need slf4j-api library. For most cases only slf4j-api and slf4j-jkd14 are only required:

Here you can download the version 1.7.2:

slf4j-api-1.7.2.jar
slf4j-jkd14-1.7.2jar

If you need an example to see how these are used, refers to this tutorial: http://www.ibm.com/developerworks/java/library/j-hangman-app/index.html

All the code for the tutorial is available

Upvotes: 1

BABU K
BABU K

Reputation: 917

This error occurs because of referenced jars are not checked in our project's order and export tab.

Choose Project ->ALT+Enter->Java Build Path ->Order and Export->check necessary jar files into your project.

Finally clean your project and run.It will run successfully.

Upvotes: 1

Ramiro Pedrozo
Ramiro Pedrozo

Reputation: 1

make sure your MANIFEST.MF contains the name of the referenced jar in my application was slf4j-api-*. jar.

Upvotes: 0

Yuvraj Kakkar
Yuvraj Kakkar

Reputation: 1163

Download slf4j-1.7.5.zip

It holds different jar files.

Go to -> Integration folder after extracting zip and include following jar files

  1. slf4j-api-2.0.99
  2. slf4j-simple-1.6.99
  3. junit-3.8.1

Upvotes: 12

Jagjyot
Jagjyot

Reputation: 19

use maven it will download all the required jar files for you.

in this case you need the below jar files:

slf4j-log4j12-1.6.1.jar slf4j-api-1.6.1.jar

These jars will also depend on the cassandra version which you are running. There are dependencies with cassandra version , jar version and jdk version you use.

You can use : jdk1.6 with : cassandra 1.1.12 and the above jars.

Upvotes: -1

user207421
user207421

Reputation: 310840

You have to provide one of the various SLF4J implementation .jar files in the classpath, as well as the interface .jar file. This is documented.

Upvotes: 27

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