问题
如何配置Logback以将记录器的不同级别记录到不同的目的地?
例如,给定以下Logback配置,logback记录INFO
消息到STDOUT
和ERROR
消息到STDERR
?
(注意,该示例是示例logback-examples/src/main/java/chapters/configuration/sample4.xml
,在Chapter 3: Logback Configuration中的变体)。
<configuration>
<appender name="STDOUT"
class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>
%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
</appender>
<appender name="STDERR"
class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>
%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
</pattern>
</encoder>
<target>System.err</target>
</appender>
<!-- What is the effective level of "chapters.configuration"? -->
<logger name="chapters.configuration" level="INFO" additivity="false">
<appender-ref ref="STDOUT" />
</logger>
<logger name="chapters.configuration" level="ERROR" additivity="false">
<appender-ref ref="STDERR" />
</logger>
<!-- turn OFF all logging (children can override) -->
<root level="OFF">
<appender-ref ref="STDOUT" />
</root>
</configuration>
#1 热门回答(73 赞)
我相信这将是最简单的解决方案:
<configuration>
<contextName>selenium-plugin</contextName>
<!-- Logging configuration -->
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<Target>System.out</Target>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>INFO</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<encoder>
<pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] [%level] %msg%n</pattern>
</encoder>
</appender>
<appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
<Target>System.err</Target>
<filter class="ch.qos.logback.classic.filter.LevelFilter">
<level>ERROR</level>
<onMatch>ACCEPT</onMatch>
<onMismatch>DENY</onMismatch>
</filter>
<encoder>
<pattern>[%d{yyyy-MM-dd HH:mm:ss.SSS}] [%level] [%thread] %logger{10} [%file:%line] %msg%n</pattern>
</encoder>
</appender>
<root level="INFO">
<appender-ref ref="STDOUT"/>
<appender-ref ref="STDERR" />
</root>
</configuration>
#2 热门回答(59 赞)
更新:对于使用Groovy的所有基于配置的方法,请参阅Dean Hiller's answer。
你可以用2776802885做一些有趣的事情。以下配置只会向stderr打印警告和错误消息,并将其他所有内容打印到stdout。
logback.xml
<appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
<target>System.out</target>
<filter class="com.foo.StdOutFilter" />
...
</appender>
<appender name="stderr" class="ch.qos.logback.core.ConsoleAppender">
<target>System.err</target>
<filter class="com.foo.ErrOutFilter" />
...
</appender>
<logger name="mylogger" level="debug">
<appender-ref ref="stdout" />
<appender-ref ref="stderr" />
</logger>
com.foo.StdOutFilter
public class StdOutFilter extends ch.qos.logback.core.filter.AbstractMatcherFilter
{
@Override
public FilterReply decide(Object event)
{
if (!isStarted())
{
return FilterReply.NEUTRAL;
}
LoggingEvent loggingEvent = (LoggingEvent) event;
List<Level> eventsToKeep = Arrays.asList(Level.TRACE, Level.DEBUG, Level.INFO);
if (eventsToKeep.contains(loggingEvent.getLevel()))
{
return FilterReply.NEUTRAL;
}
else
{
return FilterReply.DENY;
}
}
}
com.foo.ErrOutFilter
public class ErrOutFilter extends ch.qos.logback.core.filter.AbstractMatcherFilter
{
@Override
public FilterReply decide(Object event)
{
if (!isStarted())
{
return FilterReply.NEUTRAL;
}
LoggingEvent loggingEvent = (LoggingEvent) event;
List<Level> eventsToKeep = Arrays.asList(Level.WARN, Level.ERROR);
if (eventsToKeep.contains(loggingEvent.getLevel()))
{
return FilterReply.NEUTRAL;
}
else
{
return FilterReply.DENY;
}
}
}
#3 热门回答(28 赞)
好的,这是我最喜欢的xml方式。我为eclipse版本这样做,所以我可以
- 点击东西带我到日志声明和
- 查看信息及以下黑色和警告/严重红色
由于某种原因,SO没有正确显示这一切,但大多数似乎都在那里......
<configuration scan="true" scanPeriod="30 seconds">
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<filter class="ch.qos.logback.core.filter.EvaluatorFilter">
<evaluator class="ch.qos.logback.classic.boolex.GEventEvaluator">
<expression>
e.level.toInt() <= INFO.toInt()
</expression>
</evaluator>
<OnMismatch>DENY</OnMismatch>
<OnMatch>NEUTRAL</OnMatch>
</filter>
<encoder>
<pattern>%date{ISO8601} %X{sessionid}-%X{user} %caller{1} %-4level: %message%n</pattern>
</encoder>
</appender>
<appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>warn</level>
</filter>
<encoder>
<pattern>%date{ISO8601} %X{sessionid}-%X{user} %caller{1} %-4level: %message%n</pattern>
</encoder>
<target>System.err</target>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="STDOUT"/>
<appender-ref ref="STDERR"/>
</root>
</configuration>