LOGBack学习Chapter 1: Introduction

1、Hello LOGBack代码

jar包:slf4j-api-1.7.30.jar，logback-classic-1.2.3.jar，logback-core-1.2.3.jar

package main;

//import org.apache.log4j.Logger;
//import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ch.qos.logback.classic.Level;

import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.core.util.StatusPrinter;
import main.test.Test;

public class Main {
    public static void main(String[] args) {
        //SLF4J中的logger不能设置level
        ch.qos.logback.classic.Logger logger = (ch.qos.logback.classic.Logger)LoggerFactory.getLogger(org.slf4j.Logger.ROOT_LOGGER_NAME);
        //Logger  logger = Logger.getLogger("com.foo");
        logger.setLevel(Level.TRACE);
        
        logger.trace("trace");
        logger.debug("debug");
        logger.info("Hello World");
        logger.warn("wrain");
        logger.error("error");
        Test t=new Test();
        t.test();
        
     // print internal state
        LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
        StatusPrinter.print(lc);
    }
}