Logback全实践

mavan项目

引入依赖

    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>1.0.6</version>
    </dependency>

定义logback.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!-- 控制台输出 -->
    <appender name="STDOUT"
              class="ch.qos.logback.core.ConsoleAppender">
        <encoder
                class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符 -->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
        </encoder>
    </appender>
    <!-- 日志输出级别 -->
    <root level="INFO">
        <appender-ref ref="STDOUT" />
    </root>
    <root level="DEBUG">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

测试类

package com.zh.ch.bigdata.logback;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Hello world!
 *
 */
public class App {

    private static final Logger LOGGER = LoggerFactory.getLogger(App.class);

    public static void main( String[] args ) {
        LOGGER.info("logback info output");
        LOGGER.debug("logback debug output");
    }
}

输出

2021-07-12 15:07:01.105 [main] INFO  com.zh.ch.bigdata.logback.App - logback info output
2021-07-12 15:07:01.107 [main] DEBUG com.zh.ch.bigdata.logback.App - logback debug output