项目集成 log4j logback log4j2

1 项目集成log4j

1.1 加入pom依赖

<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.25</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.25</version>
</dependency>

1.2 加入log4j.properties

log4j.rootLogger=debug,stdout,debug,info,warn,error
### 输出信息到控制抬
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
### 输出DEBUG 级别以上的日志到 log/debug.log
log4j.appender.debug=org.apache.log4j.DailyRollingFileAppender
log4j.appender.debug.File=log/integrate-log4j-debug.log
log4j.appender.debug.Append=true
log4j.appender.debug.Threshold=DEBUG
log4j.appender.debug.layout=org.apache.log4j.PatternLayout
log4j.appender.debug.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
### 输出DEBUG 级别以上的日志到 log/debug.log
log4j.appender.info=org.apache.log4j.DailyRollingFileAppender
log4j.appender.info.File=log/integrate-log4j-info.log
log4j.appender.info.Append=true
log4j.appender.info.Threshold=INFO
log4j.appender.info.layout=org.apache.log4j.PatternLayout
log4j.appender.info.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
### 输出DEBUG 级别以上的日志到 log/debug.log
log4j.appender.warn=org.apache.log4j.DailyRollingFileAppender
log4j.appender.warn.File=log/integrate-log4j-warn.log
log4j.appender.warn.Append=true
log4j.appender.warn.Threshold=WARN
log4j.appender.warn.layout=org.apache.log4j.PatternLayout
log4j.appender.warn.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
### 输出ERROR 级别以上的日志到 log/error.log
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.File=log/integrate-log4j-error.log
log4j.appender.error.Append=true
log4j.appender.error.Threshold=ERROR
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

1.3 在代码中使用

package com.zjw;

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

public class Log4jTest {
  private static Logger logger = LoggerFactory.getLogger(Log4jTest.class);
  
  public static void main(String[] args) {
    logger.info("Log4j test.");
  }
}

---

2 项目集成logback

2.1 加入pom依赖

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.25</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-core</artifactId>
    <version>1.2.3</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-access</artifactId>
    <version>1.2.3</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.2.3</version>
</dependency>

2.2 加入logback.xml

<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
  <!--定义日志文件的存储地址 勿在 LogBack 的配置中使用相对路径-->
  <property name="LOG_HOME" value="./log"/>
  <!-- 日志前缀名称 -->
  <property name="LOG_NAME" value="eureka-server"/>
  <!-- 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，
      %logger{50}输出日志的类 50代表包名加类名的总长度限制，
      %msg：日志消息，%n是换行符-->
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
    </encoder>
  </appender>
  <!-- 按照每天生成日志文件 -->
  <appender name="ROLLING_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!--日志文件输出的文件名-->
      <FileNamePattern>${LOG_HOME}/${LOG_NAME}-%d{yyyy-MM-dd}.log
      </FileNamePattern>
      <!--日志文件保留天数-->
      <MaxHistory>30</MaxHistory>
    </rollingPolicy>
    <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，
      %logger{50}输出日志的类 50代表包名加类名的总长度限制，
      %msg：日志消息，%n是换行符-->
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
    </encoder>
    <!--日志文件最大的大小-->
    <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
      <MaxFileSize>10MB</MaxFileSize>
    </triggeringPolicy>
  </appender>
  <!--库日志输出级别 -->
  <root level="INFO">
    <appender-ref ref="STDOUT"/>
    <appender-ref ref="ROLLING_FILE"/>
  </root>
</configuration>

2.3 在代码中使用

package com.zjw;

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

public class LogBackTest {
  private static Logger logger = LoggerFactory.getLogger(LogBackTest.class);

  public static void main(String[] args) {
    logger.info("Logback Test.");
  }
}

---

3 项目集成log4j2

3.1 加入pom依赖

<!-- slf4j核心包-->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.25</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>jcl-over-slf4j</artifactId>
    <version>1.7.25</version>
    <scope>runtime</scope>
</dependency>
<!--核心log4j2jar包-->
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-api</artifactId>
    <version>2.4.1</version>
</dependency>
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.4.1</version>
</dependency>
<!--用于与slf4j保持桥接-->
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-slf4j-impl</artifactId>
    <version>2.4.1</version>
</dependency>
<!--web工程需要包含log4j-web，非web工程不需要-->
<dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-web</artifactId>
    <version>2.4.1</version>
    <scope>runtime</scope>
</dependency>
<!--需要使用log4j2的AsyncLogger需要包含disruptor-->
<dependency>
    <groupId>com.lmax</groupId>
    <artifactId>disruptor</artifactId>
    <version>3.2.0</version>
</dependency>

3.2 加入log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="off" monitorInterval="1800">
  <properties>
    <property name="LOG_HOME">./logs</property>
    <property name="ERROR_LOG_FILE_NAME">error</property>
  </properties>
  <Appenders>
    <Console name="Console" target="SYSTEM_OUT">
      <PatternLayout pattern="%d %-5p (%F:%L) - %m%n"/>
    </Console>
    <RollingRandomAccessFile name="ErrorLog" fileName="${LOG_HOME}/${ERROR_LOG_FILE_NAME}.log"
      filePattern="${LOG_HOME}/${ERROR_LOG_FILE_NAME}.log.%d{yyyy-MM-dd}.gz">
      <PatternLayout pattern="%d %-5p (%F:%L) - %m%n"/>
      <Policies>
        <TimeBasedTriggeringPolicy/>
        <SizeBasedTriggeringPolicy size="100 MB"/>
      </Policies>
      <DefaultRolloverStrategy max="20"/>
    </RollingRandomAccessFile>
  </Appenders>
  <Loggers>
    <!-- 3rdparty Loggers -->
    <logger name="org.springframework.core" level="info"></logger>
    <logger name="org.springframework.beans" level="info"></logger>
    <logger name="org.springframework.context" level="info"></logger>
    <logger name="org.springframework.web" level="info"></logger>
    <logger name="com.hafiz.www.controller" level="error" includeLocation="true" additivity="false">
      <appender-ref ref="ErrorLog"/>
      <appender-ref ref="Console"/>
    </logger>
    <root level="info" includeLocation="true">
      <appender-ref ref="Console"/>
    </root>
  </Loggers>
</Configuration>

3.3 在代码中使用

package com.zjw;

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

public class Log4j2Test {
  private static Logger logger = LoggerFactory.getLogger(Log4j2Test.class);
  public static void main(String[] args) {
    logger.info("Log4j2 Test.");
  }
}