启用设置org.slf4j.Logger打印并输出日志方式
作者：多多2017
org.slf4j.Logger打印并输出日志
在resouces目录下面新建logback.xml（此为Logback推荐目录）
内容配置如下：
logback 分为两种设置：
1. 输出到控制台 STDOUT
2. 输出到文件 FILE
pom.xml配置
<properties>
<slf4j.version>1.7.25</slf4j.version>
</properties>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
logback.xml配置
（下面的配置同时配置输出到文件和输出到控制台）
<?xml version="1.0" encoding="UTF-8" ?>
<configuration scan="true" scanPeriod="3 seconds">
<!--设置日志输出为控制台-->
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%X{userId}] [%X{requestId}] %logger - %msg%n</pattern>
</encoder>
</appender>
<!--设置日志输出为文件-->
<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>logFile.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<FileNamePattern>logFile.%d{yyyy-MM-dd_HH-mm}.log.zip</FileNamePattern>
</rollingPolicy>
<layout class="ch.qos.logback.classic.PatternLayout">
<Pattern>%d{HH:mm:ss,SSS} [%thread] %-5level %logger{32} - %msg%n</Pattern>
</layout>
</appender>
<root>
<level value="DEBUG"/>
<appender-ref ref="STDOUT"/>
<appender-ref ref="FILE"/>
</root>
</configuration>
程序调用
1.申明 logger 变量
private Logger logger = LoggerFactory.getLogger(LoginLogDao.class);
2.在程序中调用日志
logger.debug(INSERT_LOGIN_LOG_SQL);
官方介绍网址：https://logback.qos.ch/demo.html
下面为官网介绍
logback-classic with two appenders: a ConsoleAppender and a RollingFileAppender. The RollingFileAppender sends logging events to a file called logFile.log and will rollover the active file every minute. The old file will be renamed and compressed to a zip file. The ConsoleAppender will output the logging requests to the console, and shorten the logger names to gain space on the console window, without loss of legibility. For example, ch.qos.logback.demo.prime.NumberCruncherImpl will be abbreviated as c.q.l.d.prime.NumberCruncherImpl.
输出结果如下
isDebugEnabled true
2017-04-23 23:58:35,502 DEBUG [http-nio-8080-exec-6] (LoginLogDao.java:32) - INSERT INTO t_login_log(user_id,ip,login_datetime) VALUES(?,?,?)
2017-04-23 23:58:35,503 DEBUG [http-nio-8080-exec-6] (JdbcTemplate.java:869) - Executing prepared SQL update
2017-04-23 23:58:35,503 DEBUG [http-nio-8080-exec-6] (JdbcTemplate.java:616) - Executing prepared SQL statement [INSERT INTO t_login_log(user_id,ip,login_datetime) VALUES(?,?,?)]
总结
以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。