Log4j2 could not find a logging implementation with Spring Boot

P

5

16

I'm getting this error trying to use log4j2 with spring boot.

ERROR StatusLogger Log4j2 could not find a logging implementation. 
Please add log4j-core to the classpath. Using SimpleLogger to log to the console...

I'm have followed this guide: http://docs.spring.io/spring-boot/docs/current/reference/html/howto-logging.html#howto-configure-log4j-for-logging - and also added the two log4j2-dependencies from https://logging.apache.org/log4j/2.x/maven-artifacts.html

My dependency:tree looks like this:

[INFO] --- maven-dependency-plugin:2.10:tree (default-cli) @  musikkjulekalender ---
[INFO] no.saiboten:musikkjulekalender:war:1.0-SNAPSHOT
[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.hibernate:hibernate-validator:jar:5.2.4.Final:compile
[INFO] |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] |  |  +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile
[INFO] |  |  \- com.fasterxml:classmate:jar:1.3.1:compile
[INFO] |  +- org.springframework:spring-web:jar:4.3.2.RELEASE:compile
[INFO] |  \- org.springframework:spring-webmvc:jar:4.3.2.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-jetty:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.eclipse.jetty:jetty-servlets:jar:9.3.11.v20160721:compile
[INFO] |  |  +- org.eclipse.jetty:jetty-continuation:jar:9.3.11.v20160721:compile
[INFO] |  |  +- org.eclipse.jetty:jetty-http:jar:9.3.11.v20160721:compile
[INFO] |  |  \- org.eclipse.jetty:jetty-io:jar:9.3.11.v20160721:compile
[INFO] |  +- org.eclipse.jetty:jetty-webapp:jar:9.3.11.v20160721:compile
[INFO] |  |  +- org.eclipse.jetty:jetty-xml:jar:9.3.11.v20160721:compile
[INFO] |  |  \- org.eclipse.jetty:jetty-servlet:jar:9.3.11.v20160721:compile
[INFO] |  |     \- org.eclipse.jetty:jetty-security:jar:9.3.11.v20160721:compile
[INFO] |  +- org.eclipse.jetty.websocket:websocket-server:jar:9.3.11.v20160721:compile
[INFO] |  |  +- org.eclipse.jetty.websocket:websocket-common:jar:9.3.11.v20160721:compile
[INFO] |  |  |  \- org.eclipse.jetty.websocket:websocket-api:jar:9.3.11.v20160721:compile
[INFO] |  |  +- org.eclipse.jetty.websocket:websocket-client:jar:9.3.11.v20160721:compile
[INFO] |  |  \- org.eclipse.jetty.websocket:websocket-servlet:jar:9.3.11.v20160721:compile
[INFO] |  \- org.eclipse.jetty.websocket:javax-websocket-server-impl:jar:9.3.11.v20160721:compile
[INFO] |     +- org.eclipse.jetty:jetty-annotations:jar:9.3.11.v20160721:compile
[INFO] |     |  +- org.eclipse.jetty:jetty-plus:jar:9.3.11.v20160721:compile
[INFO] |     |  +- javax.annotation:javax.annotation-api:jar:1.2:compile
[INFO] |     |  +- org.ow2.asm:asm:jar:5.0.1:compile
[INFO] |     |  \- org.ow2.asm:asm-commons:jar:5.0.1:compile
[INFO] |     |     \- org.ow2.asm:asm-tree:jar:5.0.1:compile
[INFO] |     +- org.eclipse.jetty.websocket:javax-websocket-client-impl:jar:9.3.11.v20160721:compile
[INFO] |     \- javax.websocket:javax.websocket-api:jar:1.0:compile
[INFO] +- org.springframework.boot:spring-boot-starter-data-jpa:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-aop:jar:1.4.0.RELEASE:compile
[INFO] |  |  \- org.aspectj:aspectjweaver:jar:1.8.9:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-jdbc:jar:1.4.0.RELEASE:compile
[INFO] |  |  +- org.apache.tomcat:tomcat-jdbc:jar:8.5.4:compile
[INFO] |  |  |  \- org.apache.tomcat:tomcat-juli:jar:8.5.4:compile
[INFO] |  |  \- org.springframework:spring-jdbc:jar:4.3.2.RELEASE:compile
[INFO] |  +- org.hibernate:hibernate-core:jar:5.0.9.Final:compile
[INFO] |  |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  |  +- org.javassist:javassist:jar:3.20.0-GA:compile
[INFO] |  |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  |  +- org.jboss:jandex:jar:2.0.0.Final:compile
[INFO] |  |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  |  \- xml-apis:xml-apis:jar:1.4.01:compile
[INFO] |  |  \- org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final:compile
[INFO] |  +- org.hibernate:hibernate-entitymanager:jar:5.0.9.Final:compile
[INFO] |  +- javax.transaction:javax.transaction-api:jar:1.2:compile
[INFO] |  \- org.springframework:spring-aspects:jar:4.3.2.RELEASE:compile
[INFO] +- com.h2database:h2:jar:1.4.192:compile
[INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.4.0.RELEASE:test
[INFO] |  +- org.springframework.boot:spring-boot-test:jar:1.4.0.RELEASE:test
[INFO] |  +- org.springframework.boot:spring-boot-test-autoconfigure:jar:1.4.0.RELEASE:test
[INFO] |  +- com.jayway.jsonpath:json-path:jar:2.2.0:test
[INFO] |  |  \- net.minidev:json-smart:jar:2.2.1:test
[INFO] |  |     \- net.minidev:accessors-smart:jar:1.1:test
[INFO] |  +- org.assertj:assertj-core:jar:2.5.0:test
[INFO] |  +- org.mockito:mockito-core:jar:1.10.19:test
[INFO] |  |  \- org.objenesis:objenesis:jar:2.1:test
[INFO] |  +- org.hamcrest:hamcrest-core:jar:1.3:compile
[INFO] |  +- org.hamcrest:hamcrest-library:jar:1.3:test
[INFO] |  +- org.skyscreamer:jsonassert:jar:1.3.0:test
[INFO] |  |  \- org.json:json:jar:20140107:test
[INFO] |  +- org.springframework:spring-core:jar:4.3.2.RELEASE:compile
[INFO] |  \- org.springframework:spring-test:jar:4.3.2.RELEASE:test
[INFO] +- org.springframework.boot:spring-boot-starter:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.4.0.RELEASE:compile
[INFO] |  \- org.yaml:snakeyaml:jar:1.17:runtime
[INFO] +- org.springframework.boot:spring-boot-starter-log4j2:jar:1.4.0.RELEASE:compile
[INFO] |  +- org.apache.logging.log4j:log4j-slf4j-impl:jar:2.6.2:compile
[INFO] |  +- org.slf4j:jcl-over-slf4j:jar:1.7.21:compile
[INFO] |  \- org.slf4j:jul-to-slf4j:jar:1.7.21:compile
[INFO] +- org.apache.logging.log4j:log4j-api:jar:2.6.2:compile
[INFO] +- org.apache.logging.log4j:log4j-core:jar:2.6.2:compile
[INFO] +- org.apache.commons:commons-lang3:jar:3.3.2:compile
[INFO] +- org.mongodb:mongo-java-driver:jar:2.12.4:compile
[INFO] +- org.springframework.data:spring-data-mongodb:jar:1.9.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-tx:jar:4.3.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:4.3.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.3.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-expression:jar:4.3.2.RELEASE:compile
[INFO] |  +- org.springframework.data:spring-data-commons:jar:1.12.2.RELEASE:compile
[INFO] |  \- org.slf4j:slf4j-api:jar:1.7.21:compile
[INFO] +- com.google.api-client:google-api-client:jar:1.18.0-rc:compile
[INFO] +- com.google.http-client:google-http-client-jackson2:jar:1.18.0-rc:compile
[INFO] |  \- com.google.http-client:google-http-client:jar:1.18.0-rc:compile
[INFO] +- com.google.oauth-client:google-oauth-client:jar:1.18.0-rc:compile
[INFO] |  \- com.google.code.findbugs:jsr305:jar:1.3.9:compile
[INFO] +- com.fasterxml.jackson.core:jackson-databind:jar:2.8.2:compile
[INFO] |  \- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.1:compile
[INFO] +- com.google.apis:google-api-services-oauth2:jar:v2-rev81-1.19.0:compile
[INFO] +- com.fasterxml.jackson.core:jackson-core:jar:2.8.2:compile
[INFO] +- org.mongodb.morphia:morphia:jar:0.107:compile
[INFO] +- org.springframework.security:spring-security-web:jar:4.1.1.RELEASE:compile
[INFO] |  +- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  \- org.springframework.security:spring-security-core:jar:4.1.1.RELEASE:compile
[INFO] +- org.springframework.security:spring-security-config:jar:4.1.1.RELEASE:compile
[INFO] |  \- org.springframework:spring-aop:jar:4.3.2.RELEASE:compile
[INFO] +- org.springframework.social:spring-social-config:jar:1.1.4.RELEASE:compile
[INFO] |  \- org.springframework.social:spring-social-web:jar:1.1.4.RELEASE:compile
[INFO] |     \- javax.inject:javax.inject:jar:1:compile
[INFO] +- org.springframework.social:spring-social-core:jar:1.1.4.RELEASE:compile
[INFO] +- org.springframework.social:spring-social-facebook:jar:2.0.3.RELEASE:compile
[INFO] +- org.apache.httpcomponents:httpclient:jar:4.3.6:compile
[INFO] |  +- org.apache.httpcomponents:httpcore:jar:4.4.5:compile
[INFO] |  \- commons-codec:commons-codec:jar:1.10:compile
[INFO] +- org.mockito:mockito-all:jar:1.10.8:compile
[INFO] +- junit:junit:jar:4.11:compile
[INFO] +- org.eclipse.jetty:apache-jsp:jar:9.3.11.v20160721:provided
[INFO] |  +- org.eclipse.jetty:jetty-util:jar:9.3.11.v20160721:compile
[INFO] |  +- org.eclipse.jetty:jetty-server:jar:9.3.11.v20160721:compile
[INFO] |  +- org.eclipse.jetty.toolchain:jetty-schemas:jar:3.1:provided
[INFO] |  +- javax.servlet:javax.servlet-api:jar:3.1.0:compile
[INFO] |  +- org.mortbay.jasper:apache-jsp:jar:8.0.33:provided
[INFO] |  |  \- org.mortbay.jasper:apache-el:jar:8.0.33:provided
[INFO] |  \- org.eclipse.jdt.core.compiler:ecj:jar:4.4.2:provided
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] +- org.springframework.data:spring-data-jpa:jar:1.10.2.RELEASE:compile
[INFO] |  +- org.springframework:spring-orm:jar:4.3.2.RELEASE:compile
[INFO] |  \- org.aspectj:aspectjrt:jar:1.8.9:compile
[INFO] +- postgresql:postgresql:jar:9.1-901-1.jdbc4:compile
[INFO] \- joda-time:joda-time:jar:2.9.4:compile

I have added the standard log4j2.xml-file to src/main/resources/config with the default config:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
  <Appenders>
    <Console name="STDOUT" target="SYSTEM_OUT">
      <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n"/>
    </Console>
  </Appenders>
  <Loggers>
    <Logger name="org.apache.log4j.xml" level="info"/>
    <Root level="debug">
      <AppenderRef ref="STDOUT"/>
    </Root>
  </Loggers>
</Configuration>

Any guesses? I've tried running from within Spring Tool Suite and with the maven spring-boot plugin.

By popular request, here is the complete 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 http://maven.apache.org/maven-v4_0_0.xsd">

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.RELEASE</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <groupId>no.saiboten</groupId>
    <artifactId>musikkjulekalender</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>Musikkjulekalender</name>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
             <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
     <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-api</artifactId>
        <version>2.6.2</version>
      </dependency>
      <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.6.2</version>
      </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongo-java-driver</artifactId>
            <version>2.12.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-mongodb</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.api-client</groupId>
            <artifactId>google-api-client</artifactId>
            <version>1.18.0-rc</version>
        </dependency>
        <dependency>
            <groupId>com.google.http-client</groupId>
            <artifactId>google-http-client-jackson2</artifactId>
            <version>1.18.0-rc</version>
        </dependency>
        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client</artifactId>
            <version>1.18.0-rc</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-oauth2</artifactId>
            <version>v2-rev81-1.19.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.2</version>
        </dependency>
        <dependency>
            <groupId>org.mongodb.morphia</groupId>
            <artifactId>morphia</artifactId>
            <version>0.107</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.social</groupId>
            <artifactId>spring-social-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.social</groupId>
            <artifactId>spring-social-core</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.social</groupId>
            <artifactId>spring-social-facebook</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.3.6</version>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.10.8</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.jetty</groupId>
            <artifactId>apache-jsp</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <version>9.1-901-1.jdbc4</version>
        </dependency>
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>2.9.4</version>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <useSystemClassLoader>false</useSystemClassLoader>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>spring-releases</id>
            <name>Spring Releases</name>
            <url>https://repo.spring.io/libs-release</url>
        </repository>
        <repository>
            <id>org.jboss.repository.releases</id>
            <name>JBoss Maven Release Repository</name>
            <url>https://repository.jboss.org/nexus/content/repositories/releases</url>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-releases</id>
            <name>Spring Releases</name>
            <url>https://repo.spring.io/libs-release</url>
        </pluginRepository>
    </pluginRepositories>

</project>

Parrakeet answered 18/9, 2016 at 17:40 Comment(2)

Not sure if it is related but I found presence 2 Lo4j2 Impls: [INFO] | +- org.apache.logging.log4j:log4j-slf4j-impl:jar:2.6.2:compile and [INFO] +- org.apache.logging.log4j:log4j-core:jar:2.6.2:compile – Contempt 19/9, 2016 at 3:48

Might will help you #47882321 – Acriflavine 2/12, 2019 at 13:28

C

9

I looked up the source code of LogManager.class and found the reason was there's no LoggerContextFactory found in log4j-provider.properties which should be found in log4j-core.jar/META-INF.
So check your log4j-core.jar/META-INF/log4j-provider.properties file , or you can delete your log4j-core.jar in your local repository.

Craiova answered 11/7, 2017 at 4:50 Comment(6)

Thanks that got it,. In my case I was using the sbt-assembly plugin with a MergeStrategy that discarded stuff under META-INF, I had to refine it a little to let log4j-provider.properties remain in the uber-jar's META-INF dir – Alexine 27/3, 2018 at 4:48

This just fixed a few hours for me. Thanks – Supernumerary 23/4, 2018 at 16:3

@user2056182, would you mind sharing how you refined it? I am also using the sbt-assembly plugin, and can't seem to have it work fine. – Bernadettebernadina 6/5, 2018 at 4:36

Managed to get things to work by reducing the scope of the rules in assemblyMergeStrategy and simply having case PathList("META-INF", "MANIFEST.MF") => MergeStrategy.discard. See also: github.com/marccarre/log4j2-sbt-assembly – Bernadettebernadina 7/5, 2018 at 16:18

My log4j-core.jar has that properties file, but I still get the error. for i in find ~/.m2/repository | grep log4j-core | grep -E 'jar$' | grep 2.6.2; do echo $i; unzip -l $i | grep log4j-provider.properties; done

2.6.2/log4j-core-2.6.2.jar       904  07-05-2016 19:36   META-INF/log4j-provider.properties 2.6.2/log4j-core-2.6.2-javadoc.jar 2.6.2/log4j-core-2.6.2-sources.jar       904  07-05-2016 19:36   META-INF/log4j-provider.properties

– Nonparticipation 13/5, 2019 at 16:36

@MarcCarré did u manage to resolve this? – Euton 21/9, 2022 at 16:20

M

4

It looks your dependencies are correct. This is the pom of working spring-boot application with log4j2 as logging framework:

    <!-- Spring logging -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-log4j2</artifactId>
    </dependency>

Put your log4j2.xml into resource folder for running from eclipse; if you prefer to use the different directory - resource/conf - provide the path to log4j2 configuration with JVM argument like this:

-Dlog4j.configurationFile=”conf/log4j2.xml”

Do not give up and switch back from logback to log4j2...

Maintain answered 18/9, 2016 at 20:29 Comment(0)

S

4

That error message is generated by the log4j-api module when it cannot find or load an implementation of its interfaces. Usually this means that the log4j-core module is missing from the classpath, but looking at your dependency graph that doesn't seem to be the case.

There are some transitive dependencies on the log4j-slf4j-impl and log4j-jul modules but I don't think that could cause the error message.

One way to investigate further is to try starting your application again with this system property set: -Dorg.apache.logging.log4j.simplelog.StatusLogger.level=TRACE. This will print log4j internal debug logging to the console.

(Once your configuration file is loaded the StatusLogger output level can be controlled by setting <Configuration status="trace"> in the beginning of the log4j2.xml configuration file. However, the configuration file is loaded by the log4j-core module, and we're not there yet...)

Selfrising answered 19/9, 2016 at 2:24 Comment(0)

E

2

There might be multiple reasons but common reason is you might have wrong JAR (corrupted). Delete JARs from repository and try to download again. It will solve the problem.

In my case I have deleted org folder from maven repository {home}.m2\repository\org.

I have posted similar question here. Spring boot: ERROR StatusLogger Log4j2 could not find a logging implementation

Executrix answered 31/5, 2019 at 9:0 Comment(0)

J

2

Adding below setting solved my issue.

-Dlog4j2.loggerContextFactory=org.apache.logging.log4j.core.impl.Log4jContextFactory

Jacquenette answered 17/12, 2021 at 13:29 Comment(0)

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