java logback配置文件将除调试之外的所有内容写入文件，作为登录到控制台

Question

我正在尝试为我的eclipse配置logback和slf4j。然而，我对配置文件有点困惑。我只希望日志输出应该同时写入cosole和文件，但只有调试信息应该关闭才能写入文件。因此，我写了一些配置文件，但它很烂，甚至不工作。不管怎样，我怎样才能实现这个愿望

<configuration>

  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{5} - %msg%n</pattern>
    </encoder>
  </appender>

  <logger name="com.lordofthejars.foo" level="INFO" additivity="false">
   <appender-ref ref="STDOUT" />
  </logger>

  <root level="DEBUG">          
    <appender-ref ref="STDOUT" />
  </root>  

</configuration>

Answer 1

您应该为fileappender设置要调试的级别筛选器

<configuration>

     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{5} - %msg%n</pattern>
        </encoder>
     </appender>

     <appender name="fileAppender1" class="ch.qos.logback.core.FileAppender">
       <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <file>c:/logs/kplogback.log</file>
        <append>true</append>
        <encoder>
            <pattern>%d [%thread] %-5level %logger{35} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="DEBUG">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="fileAppender1" />
    </root>

</configuration>

Answer 2

您应该使用ThresholdFilter过滤器：

The ThresholdFilter filters events below the specified threshold. For events of level equal or above the threshold, ThresholdFilter will respond NEUTRAL when its decide() method is invoked. However, events with a level below the threshold will be denied

文件：https://logback.qos.ch/manual/filters.html#thresholdFilter

例如：

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="FILE" class="ch.qos.logback.core.FileAppender">
      <file>app.log </file>
      <append>true</append>
      <encoder>
         <pattern>%-4relative [%thread] %-5level %logger{35} - %msg%n</pattern>
      </encoder>

      <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
      </filter>
    </appender>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>

        <encoder>
            <pattern>%msg%n</pattern>
        </encoder>
    </appender>

    <root level="debug">
        <appender-ref ref="STDOUT" />
        <appender-ref ref="FILE" />
    </root>
</configuration>