logback分别将日志记录到数据库和日志文件文件中，且可以独立设置级别

<configuration>
<!-- 输出到控制台 -->
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<!-- 输出格式 -->
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ${PID} [%thread] %-5level %logger{36} - %msg%n</pattern>
</encoder>
</appender>

<!-- error级别单独记录 -->
<appender name="errorAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logs/error.log</file>
<!-- 以day为单位自动回滚 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>logs/error/error-%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
<maxHistory>30</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<!-- or whenever the file size reaches 100MB -->
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ${PID} [%thread] %-5level %logger{35} - %msg%n</pattern>
</encoder>
<!-- error级别过滤器 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>

<!-- warn级别单独记录 -->
<appender name="warnAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logs/warn.log</file>
<!-- 以day为单位自动回滚 -->
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>logs/warn/warn-%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
<!-- 最多记录30天日志 -->
<maxHistory>30</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<!-- 文件大小到达30MB自动打包 -->
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ${PID} [%thread] %-5level %logger{35} - %msg%n</pattern>
</encoder>
<!-- warn级别过滤器 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>WARN</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>

<appender name="infoAppender" class="ch.qos.logback.core.rolling.RollingFileAppender">
<file>logs/info.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>logs/info/info-%d{yyyy-MM-dd}.%i.log.gz</fileNamePattern>
<maxHistory>30</maxHistory>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<!-- or whenever the file size reaches 100MB -->
<maxFileSize>100MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} ${PID} [%thread] %-5level %logger{35} - %msg%n</pattern>
</encoder>
<!--
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>  -->
</appender>
<!--<logger name="cn.com.bsfit.frms.credit.mapper" level="DEBUG" additivity="false" >
<appender-ref ref="STDOUT"/>
</logger>-->
<!-- 将WARN级别日志写入数据库 -->
<appender name="WARN-MYSQL" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource">
<dataSource class="org.apache.commons.dbcp.BasicDataSource">
<driverClassName>com.mysql.jdbc.Driver</driverClassName>
<url>jdbc:mysql://127.0.0.1:3306/frms-mt-mgr2.1?characterEncoding=UTF-8</url>
<username>root</username>
<password>root</password>
</dataSource>
</connectionSource>
<!-- WARN级别过滤器 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>WARN</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<appender name="ERROR-MYSQL" class="ch.qos.logback.classic.db.DBAppender">
<connectionSource class="ch.qos.logback.core.db.DataSourceConnectionSource">
<dataSource class="org.apache.commons.dbcp.BasicDataSource">
<driverClassName>com.mysql.jdbc.Driver</driverClassName>
<url>jdbc:mysql://127.0.0.1:3306/frms-mt-mgr2.1?characterEncoding=UTF-8</url>
<username>root</username>
<password>root</password>
</dataSource>
</connectionSource>
<!-- WARN级别过滤器 -->
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
</appender>
<!-- 根，所有logger的祖先 -->
<root level="INFO">
<appender-ref ref="STDOUT" />
<appender-ref ref="errorAppender" />
<appender-ref ref="infoAppender" />
<appender-ref ref="WARN-MYSQL" />
<appender-ref ref="ERROR-MYSQL" />
</root>
</configuration>