Logback日志基础及自定义配置代码实例

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true" scan="true" scanPeriod="30 seconds">

  <!--log.path定义的是局部变量，./logs指定的是相对路径下的文件夹logs-->
  <property name="log.path" value="./logs"/>

  <appender name="ROLLING-FILE-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">

    <!--这里的文件名是不能使用正则表达式，只能是定死的名字，实现了很久-->
    <file>${log.path}/errorlog.log</file>

    <!-- 日志输出格式：%d表示日期时间，%thread表示线程名，%-5level：级别从左显示5个字符宽度
       %logger{50} 表示logger名字最长50个字符，否则按照句点分割。 %msg：日志消息，%n是换行符 -->
    <encoder>
      <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
    </encoder>

    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <!-- 每天日志归档路径以及格式，可以不使用log后缀，%i：当文件大小超过maxFileSize时，按照i进行文件滚动，i从0开始滚动 -->
      <FileNamePattern>${log.pat h}/errorlog.%d{yyyyMMdd}.log.%i.gz</FileNamePattern>
      <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
        <maxFileSize>4096MB</maxFileSize>
      </timeBasedFileNamingAndTriggeringPolicy>
      <!--日志文件保留天数-->
      <maxHistory>365</maxHistory>
    </rollingPolicy>
  </appender>

  <!-- 日志级别-->
  <root level="debug">   
    <appender-ref ref="ROLLING-FILE-OUT"/>
  </root>

</configuration>

package cn.jiashubing.config.logback;

import ch.qos.logback.classic.pattern.ClassicConverter;
import ch.qos.logback.classic.spi.ILoggingEvent;
import java.util.UUID;

public class LogIdConfig extends ClassicConverter {

  @Override
  public String convert(ILoggingEvent event) {
    return UUID.randomUUID().toString().replaceAll("-", "");
  }
}


package cn.jiashubing.config.logback;

import ch.qos.logback.classic.pattern.ClassicConverter;
import ch.qos.logback.classic.spi.ILoggingEvent;
import java.net.InetAddress;
import java.net.UnknownHostException;

public class IPLogConfig extends ClassicConverter {

  @Override
  public String convert(ILoggingEvent event) {
    try {
      return InetAddress.getLocalHost().getHostAddress();
    } catch (UnknownHostException e) {
      e.printStackTrace();
    }
    return null;
  }
}

<property name="log.path" value="./logs"/>
<conversionRule conversionWord="ip" converterClass="cn.jiashubing.config.logback.IPLogConfig" />
<conversionRule conversionWord="logid" converterClass="cn.jiashubing.config.logback.LogIdConfig" />

<appender name="ROLLING-FILE-OUT" class="ch.qos.logback.core.rolling.RollingFileAppender">       
  <file>${log.path}/errorlog.log</file>       
  <encoder>           
    <pattern>[loglevel=%level] [timestamp=%d{yyyy-MM-dd HH:mm:ss}] [logid=%logid] [ip=%ip] [cmd=%msg] \n</pattern>       
  </encoder>
  ...
</appender>