Java使用logback记录日志时分级别保存文件

说明：一般情况下logback可以指定类使用什么样的级别显示输出日志，并且同一类可以指定不能级别，然后对应级别进行输出日志。

第一种配置：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <!-- 定义log 文件的 home 目录  -->
    <property name="LOG_HOME"  value="C:/Users/Administrator/Desktop/logs"></property>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <!-- %.-1level 只显示信息级别的首字母,%-5level 左对齐显示信息级别全称 -->  

            <Pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] --%mdc{client} %msg%n</Pattern>
        </encoder>
    </appender>  

    <appender name="TRACE_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoding>UTF-8</encoding>
        <file>${LOG_HOME}/trace.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/trace.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line] --%mdc{client} %msg%n</pattern>
        </layout>
       <!--  <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>TRACE</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
           </filter>  -->
    </appender>  

     <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoding>UTF-8</encoding>
        <file>${LOG_HOME}/info.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/info.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line] --%mdc{client} %msg%n</pattern>
        </layout>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
           </filter>
    </appender>  

      <appender name="DEBUG_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoding>UTF-8</encoding>
        <file>${LOG_HOME}/debug.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/debug.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line] --%mdc{client} %msg%n</pattern>
        </layout>
         <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
           </filter>
    </appender>  

     <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoding>UTF-8</encoding>
        <file>${LOG_HOME}/warn.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/warn.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line] --%mdc{client} %msg%n</pattern>
        </layout>
         <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
           </filter>
    </appender>  

     <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <encoding>UTF-8</encoding>
        <file>${LOG_HOME}/error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <FileNamePattern>logs/error.%d{yyyy-MM-dd}.log</FileNamePattern>
        </rollingPolicy>
        <layout>
            <pattern>[%date{yyyy-MM-dd HH:mm:ss}] [%-5level] [%logger:%line] --%mdc{client} %msg%n</pattern>
        </layout>
         <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
           </filter>
    </appender>  

   <!--  <logger name="com.mchange" level="INFO"/>
    <logger name="org.springframework" level="WARN"/>
    <logger name="java.sql.Connection" level="DEBUG"/>
    <logger name="java.sql.ResultSet" level="INFO"/>
    <logger name="com.boaotech.util" level="DEBUG"/>  -->

    <root level="TRACE">
        <appender-ref ref="STDOUT"/>
        <appender-ref ref="TRACE_FILE" />
           <appender-ref ref="INFO_FILE" />
          <appender-ref ref="DEBUG_FILE" />
         <appender-ref ref="WARN_FILE" />
          <appender-ref ref="ERROR_FILE" />
    </root>  

</configuration>

第二种配置：

<?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="c:/log" />
    <!-- 控制台输出 -->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
       <!-- 日志输出编码 -->
       <Encoding>UTF-8</Encoding>
        <layout class="ch.qos.logback.classic.PatternLayout">
             <!--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%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n
            </pattern>
        </layout>
    </appender>
    <!-- 按照每天生成日志文件 -->
    <appender name="FILE"  class="ch.qos.logback.core.rolling.RollingFileAppender">
        <Encoding>UTF-8</Encoding>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--日志文件输出的文件名-->
            <FileNamePattern>${LOG_HOME}/myApp.log.%d{yyyy-MM-dd}.log</FileNamePattern>
            <MaxHistory>30</MaxHistory>
        </rollingPolicy>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <!--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%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n
            </pattern>
       </layout>
        <!--日志文件最大的大小-->
       <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
         <MaxFileSize>10MB</MaxFileSize>
       </triggeringPolicy>
    </appender>
   <!-- show parameters for hibernate sql 专为 Hibernate 定制 -->
    <logger name="org.hibernate.type.descriptor.sql.BasicBinder"  level="TRACE" />
    <logger name="org.hibernate.type.descriptor.sql.BasicExtractor"  level="DEBUG" />
    <logger name="org.hibernate.SQL" level="DEBUG" />
    <logger name="org.hibernate.engine.QueryParameters" level="DEBUG" />
    <logger name="org.hibernate.engine.query.HQLQueryPlan" level="DEBUG" />  

    <!-- 日志输出级别 -->
    <root level="INFO">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
    </root> 

     <!--日志异步到数据库 -->
    <appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
        <!--日志异步到数据库 -->
        <connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
           <!--连接池 -->
           <dataSource class="com.mchange.v2.c3p0.ComboPooledDataSource">
              <driverClass>com.mysql.jdbc.Driver</driverClass>
              <url>jdbc:mysql://127.0.0.1:3306/databaseName</url>
              <user>root</user>
              <password>root</password>
            </dataSource>
        </connectionSource>
  </appender> -->
</configuration>

参考：

http://www.cnblogs.com/dragonflyyi/p/4245250.html（以上部分内容转自此篇文章）