Log4j 整合到Netty

• 添加依赖

# maven项目
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</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>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-simple</artifactId>
    <version>1.7.25</version>
    <scope>test</scope>
</dependency>

# gradle项目
// https://mvnrepository.com/artifact/log4j/log4j
implementation group: 'log4j', name: 'log4j', version: '1.2.17'
// https://mvnrepository.com/artifact/org.slf4j/slf4j-api
implementation group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25'
// https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12
testImplementation group: 'org.slf4j', name: 'slf4j-log4j12', version: '1.7.25'
// https://mvnrepository.com/artifact/org.slf4j/slf4j-simple
testImplementation group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25'

• 在 resources路径下编写log4j.propertie

log4j.rootLogger=DEBUG, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=[%p] %C{1} - %m%n