java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext 不能转换为 org.apache.logging.log4j.core.LoggerContext

Question

I'm trying to create SpellChecker program through api, here is my code

SpellCheck.java

package com.spell;

import org.xeustechnologies.googleapi.spelling.SpellChecker;
import org.xeustechnologies.googleapi.spelling.SpellCorrection;
import org.xeustechnologies.googleapi.spelling.SpellResponse;

public class SpellCheck {

    public static void main(String[] args)
    {

        SpellChecker checker = new SpellChecker();

        SpellResponse spellResponse = checker.check( "helloo worlrd" );

        for( SpellCorrection sc : spellResponse.getCorrections() ) 
            System.out.println( sc.getValue() );

    }
}

Dependencies

Error I got after running it:

Exception in thread "main" java.lang.ExceptionInInitializerError at com.spell.SpellCheck.main(SpellCheck.java:12) Caused by: java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext at org.apache.log4j.Logger$PrivateManager.getContext(Logger.java:59) at org.apache.log4j.Logger.getLogger(Logger.java:41) at org.xeustechnologies.googleapi.spelling.SpellChecker.(SpellChecker.java:50) ... 1 more

Answer 1

It looks like org.xeustechnologies.google.api.spelling.SpellChecker uses log4j and you are using slf4j. Try adding log4j-over-slf4j to the classpath to bridge log4 to use slf4j.