package com.learn.together.slf4j.log4j.cover.others;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.logging.log4j.LogManager;
import org.junit.Test;
import org.slf4j.LoggerFactory;
import org.slf4j.bridge.SLF4JBridgeHandler;

import java.util.logging.Level;
import java.util.logging.Logger;

public class SLF4jLog4jCoverOthers {

    static {
        SLF4JBridgeHandler.removeHandlersForRootLogger();
        SLF4JBridgeHandler.install();
        Logger.getLogger("").setLevel(Level.FINEST); // 设置为最低，将控制权限移交至slf4j
    }

    /**
     * 所有日志输出方式，被重定向到了slf4j api，具体实现为log4j 2.x
     */
    @Test
    public void test() {
        //jul
        Logger julLogger = Logger.getLogger(SLF4jLog4jCoverOthers.class.getName());
        julLogger.fine("jul info");//fine 对应debug

        //jcl
        Log jclLogger = LogFactory.getLog(SLF4jLog4jCoverOthers.class);
        jclLogger.debug("jcl info");

        //log4j 1.x
        org.apache.log4j.Logger log4jLogger = org.apache.log4j.Logger.getLogger(SLF4jLog4jCoverOthers.class);
        log4jLogger.debug("log4j 1.x info");

        //log4j 2.x
        org.apache.logging.log4j.Logger log4j2Logger = LogManager.getLogger(SLF4jLog4jCoverOthers.class);
        log4j2Logger.debug("log4j 2.x info");

        //slf4j api  实际使用的是log4j 2.x
        org.slf4j.Logger slf4jLogger = LoggerFactory.getLogger(SLF4jLog4jCoverOthers.class);
        slf4jLogger.debug("slf4j info, impl logger=" + slf4jLogger.getClass().getName());


    }

}