The above error came after updating the m2e to version 1.1. By removing m2e 1.1 and rolling back to m2e 1.0 everything worked fine. I tried to repeat the problem in Windows and Ubuntu and it gave me the exact same error. Numerous configurations of the slf4j-api and logback were tested but none seem to work.
The error appears in any maven project even without declaring slf4j dependency.
New Maven Project--> maven-archetype-quickstart
and
New Maven Project--> Simple project without archetype selection
result to
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
Tested with Eclipse Indigo and Eclipse Juno (32 and 64 bit both) on Mac, 32 bit on Ubuntu and 64 and 32 bit on Windows. Tested fresh installs of Juno Classic, Juno Modelling tools, Kepler Standard, Kepler Modelling Tools and produced the same error.
The error appears with clean, install, test, deploy, generate-sources, validate , compile , package, integration-test, verify and combinations of the goal clean with the rest goals. It appears also with parameters -e and -X. There was an attempt to delete the m2e repository and download it from scratch but again without success. It should me mentioned that it was tested in 3 different machines and virtual box all the above systems but it produced the same error.
Tried all different logback configurations (from 1.0.4 to 1.0.13) that resolve the slf4j-api and logback-core dependencies, but all produce the same error:
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version></version>
</dependency>
Tried all different (from 1.6.1 to 1.7.5 ) slf4j-simple configurations.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version></version>
<scope>compile</scope>
</dependency>
Tried all different (from 1.6.1 to 1.7.5 ) log4j-over-slf4j configurations.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>log4j-over-slf4j</artifactId>
<version></version>
<scope>compile</scope>
</dependency>
Tried all different (from 1.6.1 to 1.7.5 ) slf4j-jdk14 configurations.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version></version>
<scope>compile</scope>
</dependency>
Tried all different (from 1.6.1 to 1.7.5 ) slf4j-log4j12 configurations.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version></version>
<scope>compile</scope>
</dependency>
Tried slf4j-nop 1.7.5 configuration.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-nop</artifactId>
<version>1.7.5</version>
<scope>compile</scope>
</dependency>
Last but not least the logs are saved and printed despite the error.
Download Eclipse Juno, Indigo or Kepler 32 or 64 bit (All installations will cause the same error).
Install m2e - Maven Integration for Eclipse
OR
Update your m2e version to 1.1.0.20120530-0009, or 1.2.0.20120903-1050, or 1.3.0.20130129-0926, or 1.4.0.20130601-0317 )
Select File->New->Other->Maven Project->Click Next->Select
maven-archetype-quickstart from the catalog->Finish
OR
Select File->New->Other->Maven Project->Click Next->Select Create a simple project (skip archetype selection)-> Complete Artifact info-> Finish
The first line on the console will be
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.
P.S. Existing projects will produce the same error after updating the m2e version to 1.1.0.20120530-0009, 1.2.0.20120903-1050, 1.3.0.20130129-0926, 1.4.0.20130601-0317
EDIT
m2e support site:
The above question was posted as a bug in m2e support site and the answer from Igor Fedorenko was that
There are no immediate plans to suppress this message.
For viewing the above bug please refer to m2e official support site
***Reported FIXED***
This is not an error message but a warning. It is very clearly explained in their website as :
This warning, i.e. not an error, message is reported when no SLF4J providers could be found on the class path. Placing one (and only one) of slf4j-nop.jar slf4j-simple.jar, slf4j-log4j12.jar, slf4j-jdk14.jar or logback-classic.jar on the class path should solve the problem. Note that these providers must target slf4j-api 1.8 or later.
In the absence of a provider, SLF4J will default to a no-operation (NOP) logger provider.
I had the similar issue for my Spring Boot - Gradle application running on Eclipse Luna. I could resolve it by manually adding an entry in my project's .classpath
<classpathentry sourcepath="C:/Users/<username>/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-simple/1.7.7/3150039466ad03e6ef1c7ec1c2cbb0d96710cf64/slf4j-simple-1.7.7-sources.jar" kind="lib" path="C:/Users/<username>/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-simple/1.7.7/8095d0b9f7e0a9cd79a663c740e0f8fb31d0e2c8/slf4j-simple-1.7.7.jar"/>
Idea is to follow this solution. But how to implement is dependent on case to case. One way of fixing is the one that I used above.
Hope this helps.
Had similar error with the same result with Gradle and was able to solve it by following:
//compile 'org.slf4j:slf4j-api:1.7.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.1'
compile group: 'org.apache.logging.log4j', name: 'log4j-slf4j-impl', version: '2.1'
Out-commented line is the one which caused the error output. I believe you can transfer this to Maven.
There is a documentation in SLf4J site to resolve this. I followed that and added slf4j-simple-1.6.1.jar to my aplication along with slf4j-api-1.6.1.jar which i already had.This solved my problem
Paste this code to your pom.xml file. It works for me.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.6.1</version>
<scope>test</scope>
</dependency>
Had been over looking the issue having surfaced it. Believe this will be a good read for others who come down here with the same issue:
I had the same problem in writing the Kafka producer program using java. This error is coming due to the wrong slf4j library. use below slf4j-simple maven dependency that will fix your problem.
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.6.1</version>
<scope>test</scope>
</dependency>
You haven't specify version in your maven dependency file may be thats why it is not picking the latest jar
As well as you need another deppendency with slf4j-log4j12 artifact id.
Include this in your pom file
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.6</version>
</dependency>
Let me know if error is still not resolved
I also recomend you to see this link
If you are using Gradle add this:
dependencies {
...
compile "org.slf4j:slf4j-simple:1.7.9"
...
}
Source: Stackoverflow.com