No appenders could be found for logger (com.zaxxer.hikari.HikariConfig)

Question

So I have been trying to configure the logger for HikariCP the entire weekend so far and now I am seeking help. I cant exactly list what I already tried because I went through like everything I could find but here are two of the most promising things I have found so far.

The first thing would be this Stackoverflow Thread: No appenders could be found for logger(log4j)? Which got marked as correct but when I add

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.11.0</version>
</dependency>

to my pom.xlm I still get the same error message.

The second thing I found was to just use

BasicConfigurator.configure();

While this DOES WORK it also enables logging for other libarys I have in my real Project which spam more log messages than I can handle so this is not an option. This line of code was found on No appenders could be found for logger(log4j)? which also states that using this configuration will work

# Set root logger level to DEBUG and its only appender to A1.
log4j.rootLogger=DEBUG, A1

# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender

# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

However after translating this piece to a XLM configuration I still got the exact same error message.

log4j:WARN No appenders could be found for logger (com.zaxxer.hikari.HikariConfig).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

Here is my current log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%logger{1}] - %msg%n"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="com.zaxxer.hikari.HikariConfig" level="debug" additivity="true">
            <AppenderRef ref="Console"/>
        </Logger>
        <Root level="trace">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>

Here is my current pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.dinhware</groupId>
    <artifactId>StackOverFlowTest</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
            <version>3.2.0</version>
        </dependency>
        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>2.2.5</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.11.0</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.0</version>
        </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>
    </dependencies>
</project>

So what am I doing wrong here, am I just missing something really obvious?

score 2 · Accepted Answer · answered Jul 15 '18 at 11:54

It appears that something was not correctly updating. After I recreated my pom.xml file I once again removed the dependency

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

and replaced it with the first one from my original post

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.11.0</version>
</dependency>

which now does seem to work.

No appenders could be found for logger (com.zaxxer.hikari.HikariConfig)

1 Answers1