slf4j + logback配置实例

1. 项目结构

实现 (a) A B C D 类都有对应的独立日志文件 (b) 一个全局的info级别日志文件并保留历史日志 (c) 一个全局的error级别的日志文件并保留历史日志

 

1.1 配置logback.xml

 

<?xml version="1.0" encoding="UTF-8"?>

<configuration>
	
    <!-- 控制台输出 -->
	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
		    <!-- 使用caller, 可以像log4j一样, 在日志中输出带有跳转的链接 -->
			<pattern>
				%date [%thread] %-5level %replace(%caller{1}){'(\bCaller(.+?)at\b)|\r|\n|\s*|\t', ''} - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<!-- 用于记录所有的error级别的日志  -->
	<appender name="all_error"
		class="ch.qos.logback.core.rolling.RollingFileAppender">
		<filter class="ch.qos.logback.classic.filter.LevelFilter">
			<level>ERROR</level>
			<onMatch>ACCEPT</onMatch>
			<onMismatch>DENY</onMismatch>
		</filter>
		<!-- 存放error级别日志的文件. -->
		<file>log/all_error/error.log</file>
		<!-- 
			按照序列生成滚动日志文件 
			 单个日志文件的生命周期 eg: error.log -r(ename)-> error-his-1.log -r-> ... -r-> error-his-5.log -delete-> null   
		-->
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<fileNamePattern>log/all_error/error-his-%i.log</fileNamePattern>
			<minIndex>1</minIndex>
			<maxIndex>5</maxIndex>
		</rollingPolicy>
		<!-- 触发条件 -->
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<maxFileSize>1MB</maxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<!-- 用于记录所有的info及以上级别的日志  -->
	<appender name="all_info" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
			<level>INFO</level>
		</filter>
		<file>log/all_info/info.log</file>
		<!-- 按照时间规则生成日志文件 -->
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>log/all_info/info_his_%d{yyyyMMdd_HH/mm}.log
			</fileNamePattern>
			<!-- 保留最多5个历史日志 -->
			<maxHistory>5</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<appender name="a" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<File>log/a/a_debug.log</File>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>log/a/a_debug.%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>5</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>5MB</MaxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<appender name="b" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<File>log/b/b_info.log</File>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>log/b/b_info.%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>5</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>5MB</MaxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<appender name="c" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<File>log/c/c_warn.log</File>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>log/c/c_warn.%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>5</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>5MB</MaxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<appender name="d" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<File>log/d/d_error.log</File>
		<rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
			<FileNamePattern>log/d/d_error.%i.log</FileNamePattern>
			<MinIndex>1</MinIndex>
			<MaxIndex>5</MaxIndex>
		</rollingPolicy>
		<triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
			<MaxFileSize>5MB</MaxFileSize>
		</triggeringPolicy>
		<encoder>
			<pattern>
				%date [%thread] %-5level [%logger:%method:%line] - %msg%n
            </pattern>
		</encoder>
	</appender>
	
	<root level="ALL">
		<appender-ref ref="all_info" level="ALL"></appender-ref>
		<appender-ref ref="all_error"></appender-ref>
		<appender-ref ref="STDOUT"></appender-ref>
	</root>
	
	<!-- 记录logger name为com.homeway.logger.a.* 输出的 debug级别及以上的日志, 并保存到独立的日志文件中  -->
	<logger name="com.homeway.logger.a" level="DEBUG" additivity="false">
	    <appender-ref ref="a"></appender-ref>
	</logger>
	
	<logger name="com.homeway.logger.b" level="INFO">
	    <appender-ref ref="b"></appender-ref>
	</logger>
	
	<logger name="com.homeway.logger.c" level="WARN">
	    <appender-ref ref="c"></appender-ref>
	</logger>
	
	<logger name="com.homeway.logger.d" level="ERROR">
	    <appender-ref ref="d"></appender-ref>
	</logger>
	
</configuration>

 常用模板

<!-- simple caller -->
%date{HH:mm:ss.SSS} %-5level %replace(%caller{1}){'(Caller(.+?)(?=\())|\r|\n|\s*|\t', ''} - %msg%n

<!-- fully caller -->
%date %-5level %replace(%caller{1}){'(\bCaller(.+?)at\b)|\r|\n|\s*|\t', ''} - %msg%n

  

1.2 测试代码

1.2.1 com.homeway.logger.a.A.java (classes B,C,D类似)

package com.homeway.logger.a;

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

public class A {
	
	static final Logger log = LoggerFactory.getLogger(A.class);
	
	public A(){
		log.debug(" A - debug ");
		log.info(" A - info ");
		log.warn(" A - {} ", "warn");
		log.error(" {} - {} ", "A" , "error");
	}
}

 

 

1.2.2 com.homeway.logger.LoggerTest.java

package com.homeway.logger;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

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

import com.homeway.logger.a.A;
import com.homeway.logger.b.B;
import com.homeway.logger.c.C;
import com.homeway.logger.d.D;

public class LoggerTest {
	
	static final Logger logger = LoggerFactory.getLogger(LoggerTest.class);
	
	public static void log(){
		logger.debug("hello {}", "world");
		A a = new A();
		B b = new B();
		C c = new C();
		D d = new D();
		logger.warn("logged classes: {}, {}, {}, {}", 
				a.getClass(), b.getClass(), c.getClass(), d.getClass());
	}
	
	public static void main(String[] args) throws Exception {
		
		logger.info("start logger test.");
		
		// 定时任务
		ScheduledExecutorService exec = Executors.newScheduledThreadPool(1);		
		exec.scheduleAtFixedRate(new Runnable() {			
			@Override
			public void run() {
				log();
			}
		}, 0, 1, TimeUnit.MINUTES);
	} 
}

 

 1.3 运行后生成的日志文件目录结构 

 

 

项目代码附件 : Logger.7z