Getting ClassCastException when trying to cast Logger object to my own wrapper logger - rest

Question

I am trying write a wrapper logger class by extending Logger, which will log class name , method name, message and error/exception details.
Getting exception in below line
ILogger logger =
(CustomLogger)org.apache.logging.log4j.LogManager.getLogger(name);
Using below XML, sometimes it's taking SLF4J logger too and getting SLF4j binding exceptions too.
My 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.Logger</groupId>
<artifactId>WrapperLogger</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>WrapperLogger</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.2.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
===================================================================
log4j.xml
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<!-- Console Appender -->
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{yyyy-MMM-dd HH:mm:ss a} [%t] %M,%C,
%-5level %logger{36} - %msg%n" />
</Console>
<!-- File Appender -->
<File name="File" fileName="d:/app.log">
<PatternLayout pattern="%d{yyyy-MMM-dd HH:mm:ss a} [%t] %-5level
%logger{36} - %msg%n" />
</File>
</Appenders>
<Loggers>
<!-- Log everything in custom package -->
<Logger name="com.boraji.tutorial.springboot" level="debug" additivity="false">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Logger>
<!-- Log everything in Spring Boot -->
<Logger name="org.springframework.boot" level="debug" additivity="false">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Logger>
<!-- Log everything in Spring Core -->
<Logger name="org.springframework.core" level="debug" additivity="false">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Logger>
<Root level="info">
<AppenderRef ref="Console" />
<AppenderRef ref="File" />
</Root>

Answer 1

To remove slf4j binding exceptions, you should probably remove spring-boot-starter-logging dependency from your pom.xml.
Actually, this dependency is already added by spring-boot-starter artificat so you need to exclude it like below -
<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.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>