# Logging

Currently pcap-common logging only support Slf4j and Log4j2.

{% tabs %}
{% tab title="Logback" %}

```
<!-- Add requires org.slf4j; on module-info.java -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
</dependency>

<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>x.y.z</version>
</dependency>
```

{% endtab %}

{% tab title="Log4j2" %}

```
<!-- Add requires org.apache.logging.log4j; on module-info.java -->

<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>x.y.z</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>x.y.z</version>
</dependency>
```

{% endtab %}
{% endtabs %}

Sample logging configurations.

{% tabs %}
{% tab title="logback.xml" %}

```
<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="debug">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>
```

{% endtab %}

{% tab title="log4j2.xml" %}

```
<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="WARN">
    <Appenders>
        <Console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
        </Console>
    </Appenders>
    <Loggers>
        <Root level="debug">
            <AppenderRef ref="Console"/>
        </Root>
    </Loggers>
</Configuration>
```

{% endtab %}
{% endtabs %}