Getting SLF4J: No SLF4J providers were found even after installing dependencies-CodePudding

My Class

package com.logging.slf4j;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Main {
    static Logger logger = LoggerFactory.getLogger(Main.class);

    public static void main(String[] args) {
        logger.warn("Hello");
    }

}

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.logging</groupId>
  <artifactId>slf4j</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <dependencies>
      <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>2.0.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>2.0.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-reload4j -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-reload4j</artifactId>
        <version>2.0.6</version>
        <scope>test</scope>
    </dependency>
  </dependencies>
</project>

I have all the maven dependencies are installed.

Still i am having the following error..

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

CodePudding user response：

remove the <scope>test</scope> from the dependency

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-reload4j</artifactId>
    <version>2.0.6</version>
    <scope>test</scope>
</dependency>

if you want to use it in running code.

Libraries with scope test are only available in unit tests

CodePudding user response：

After removing the scope(as per previous answer) log4j.properties should configured properly and place should be src/main/resources.

# Root logger option
log4j.rootLogger=INFO, stdout

# Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n