logback在SpringBoot下出现no applicable action for [appender], current ElementPath is [[configuration][a

可能因为最新版的不支持一些日志级别

注意看注释的地方

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">
    <!--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="d:/log" /> 
    <!-- 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%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>
        </encoder>
    </appender>
    <!-- 按照每天生成日志文件 -->
    <appender name="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}/TestWeb.log.%d{yyyy-MM-dd-HH-mm}.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%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>
        </encoder>
        <!--日志文件最大的大小-->
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <MaxFileSize>10MB</MaxFileSize>
        </triggeringPolicy>
    </appender>
     <!-- info -->
     <!-- Info -->
    <appender name="info1" class="ch.qos.logback.core.rolling.RollingFileAppender">
       <!--  <appender>true</appender> -->
 
      <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter> 
        <!-- 每天生成日志文件 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/info.%d{yyyy-MM-dd}.log
            </fileNamePattern>
            <!-- 日志文件保留15天 -->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <!-- 格式化输出 -->
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%date{yyyy-MM-dd HH:mm:ss.SSS} | %thread | %-5level | %class{20}:%file\(%line\) | %msg%n</pattern>
        </encoder>
    </appender>
    <!--debug  -->
    <appender name="debug1" class="ch.qos.logback.core.rolling.RollingFileAppender">
      <!-- <appender>true</appender> -->
 
      <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>debug</level>
           <!--  <onMatch>ACCEPT</onMatch> 
            <onMismatch>DENY</onMismatch>  -->
        </filter> 
        <!-- 每天生成日志文件 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${LOG_HOME}/debug.%d{yyyy-MM-dd}.log
            </fileNamePattern>
            <!-- 日志文件保留15天 -->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <!-- 格式化输出 -->
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%date{yyyy-MM-dd HH:mm:ss.SSS} | %thread | %-5level | %class{20}:%file\(%line\) | %msg%n</pattern>
        </encoder>
    </appender>
 <!--    <appender name="info_async" class="ch.qos.logback.classic.AsyncAppender">
        <discardingThreshold>3000</discardingThreshold>
        <queueSize>10000</queueSize>
        <appender-ref ref="info" />
    </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" />
 
    <!--myibatis log configure-->
    <logger name="com.apache.ibatis" level="TRACE"/>
    <logger name="java.sql.Connection" level="DEBUG"/>
    <logger name="java.sql.Statement" level="DEBUG"/>
    <logger name="java.sql.PreparedStatement" level="DEBUG"/>
 
    <!-- 日志输出级别 -->
    <root level="INFO">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
        <appender-ref ref="info1" />
        <appender-ref ref="debug1" />
    </root>
    <!--日志异步到数据库 -->
    <!--<appender name="DB" class="ch.qos.logback.classic.db.DBAppender">-->
        <!--&lt;!&ndash;日志异步到数据库 &ndash;&gt;-->
        <!--<connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">-->
            <!--&lt;!&ndash;连接池 &ndash;&gt;-->
            <!--<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>

原文地址:https://blog.csdn.net/bestxianfeng163/article/details/83616492