log4j2 + slf4j

1. slf4j 介绍

  slf4j 是一个日志的同一接口,只有接口,实现可以使 log4j,logback等

  slf4j 详细介绍参考: https://www.cnblogs.com/hafiz/p/5486858.html

2.配置

  jar包依赖

        <!-- log4j2的核心包 -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-core</artifactId>
            <version>2.11.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-api</artifactId>
            <version>2.11.1</version>
        </dependency>
        <!-- 用于slf4j 和 log4j2 保持桥接 -->
        <dependency>
            <groupId>org.apache.logging.log4j</groupId>
            <artifactId>log4j-slf4j-impl</artifactId>
            <version>2.11.1</version>
            <scope>test</scope>
        </dependency>
        <!-- slf4j 的api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>

  log4j2.xml配置:使用之前的log4j2.xml配置即可

3.使用代码

  注意以下导入的包是 slf4j ,而不是 log4j 的包

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

public class Test1 {
    public static Logger logger=LoggerFactory.getLogger(Test1.class);
    public static void main(String[] args) {
        logger.trace("trace11111111111");
        logger.debug("debug11111111");
        logger.info("ino11111111111");
        logger.warn("dddddddddddddddddd");
        logger.error("eeeeeeeeeeeeeeeee");
        try {
            int a=1/0;
        } catch (Exception e) {
            logger.error(e.getMessage(),e.fillInStackTrace());
        }
    }
}

  配置及使用参考:https://www.cnblogs.com/hafiz/p/6160298.html

posted @ 2019-12-06 14:32  hjy1995  阅读(1243)  评论(0编辑  收藏  举报