日志回条件日志 [英] logback conditional logging

问题描述

我使用此注销配置文件:

I use this logback configuration file:

<configuration>
  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%-10.-10thread] %-5level %-30logger{1} - %msg%n</pattern>
    </encoder>
  </appender>

<if condition='isDefined("fileout-dir")'><then>
  <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender">
     <discriminator  class="edu.kit.sdq.storagebenchmarkharness.logging.SBHThreadDiscriminator"/>
    <sift>
      <appender name="FILE-${thread}" class="ch.qos.logback.core.FileAppender">
        <file>${fileout-dir:-}${thread}.log</file>
        <append>true</append>
        <layout class="ch.qos.logback.classic.PatternLayout">
          <pattern>%d{HH:mm:ss.SSS} %-5level %-30logger{1} - %msg%n</pattern>
        </layout>
      </appender>
    </sift>
  </appender>
  <root>
    <appender-ref>SIFT</appender-ref>
  </root>
 </then> </if>

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

运行我的应用程序时，出现以下错误:

When running my application, I get the following error:

org.codehaus.commons.compiler.CompileException: Line 1, Column 45: A method named "isDefined" is not declared in any enclosing class nor any supertype, nor through a static import
    at org.codehaus.commons.compiler.CompileException: Line 1, Column 45: A method named "isDefined" is not declared in any enclosing class nor any supertype, nor through a static import
    at  at org.codehaus.janino.UnitCompiler.compileError(UnitCompiler.java:9014)
    at  at org.codehaus.janino.UnitCompiler.findIMethod(UnitCompiler.java:6549)
    at  at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:3429)
    at  at org.codehaus.janino.UnitCompiler.access$6300(UnitCompiler.java:104)
    at  at org.codehaus.janino.UnitCompiler$11.visitMethodInvocation(UnitCompiler.java:2869)
    at  at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:2831)
    at  at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:2890)
    at  at org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:3897)
    at  at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:1637)
    at  at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:104)
    at  at org.codehaus.janino.UnitCompiler$5.visitReturnStatement(UnitCompiler.java:877)
    at  at org.codehaus.janino.Java$ReturnStatement.accept(Java.java:1803)
    at  at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:888)
    at  at org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:914)
    at  at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1999)
    at  at org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:789)
    at  at org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:770)
    at  at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:464)
    at  at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:357)
    at  at org.codehaus.janino.UnitCompiler$3.visitPackageMemberClassDeclaration(UnitCompiler.java:312)
    at  at org.codehaus.janino.Java$PackageMemberClassDeclaration.accept(Java.java:770)
    at  at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:319)
    at  at org.codehaus.janino.UnitCompiler.compileUnit(UnitCompiler.java:288)
    at  at org.codehaus.janino.SimpleCompiler.compileToClassLoader(SimpleCompiler.java:393)
    at  at org.codehaus.janino.ClassBodyEvaluator.compileToClass(ClassBodyEvaluator.java:311)
    at  at org.codehaus.janino.ClassBodyEvaluator.cook(ClassBodyEvaluator.java:224)
    at  at org.codehaus.janino.SimpleCompiler.cook(SimpleCompiler.java:194)
    at  at org.codehaus.commons.compiler.Cookable.cook(Cookable.java:80)
    at  at org.codehaus.commons.compiler.Cookable.cook(Cookable.java:72)
    at  at ch.qos.logback.core.joran.conditional.PropertyEvalScriptBuilder.build(PropertyEvalScriptBuilder.java:34)
    at  at ch.qos.logback.core.joran.conditional.IfAction.begin(IfAction.java:43)
    at  at ch.qos.logback.core.joran.spi.Interpreter.callBeginAction(Interpreter.java:273)
    at  at ch.qos.logback.core.joran.spi.Interpreter.startElement(Interpreter.java:145)
    at  at ch.qos.logback.core.joran.spi.Interpreter.startElement(Interpreter.java:127)
    at  at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:40)
    at  at ch.qos.logback.core.joran.spi.Interpreter.play(Interpreter.java:332)
    at  at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:126)
    at  at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:93)
    at  at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:52)
    at  at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:60)
    at  at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:121)
    at  at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:85)
    at  at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
    at  at org.slf4j.LoggerFactory.bind(LoggerFactory.java:121)
    at  at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:111)
    at  at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:268)
    at  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:241)
    at  at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:254)
    at  at edu.kit.sdq.storagebenchmarkharness.Logger.getLogger(Logger.java:44)
    at  at edu.kit.sdq.storagebenchmarkharness.BenchmarkController.<clinit>(BenchmarkController.java:66)

为什么方法isDefined不知道? logback文档指出它应该存在，并且至少

Why is the method isDefined unkown? The logback docs state that it should exists, and at least one stack overflow thread seems to use it.

我在类路径中包含了janino的最新版本，因为评估表达式需要它.正如您在错误消息中看到的那样，janino编译器已加载.

I included the most recent version of janino in my classpath because it is needed for the evalution of the expressions. The janino compiler gets loaded as you can see in the error message.

我在做什么错了?

谢谢！

推荐答案

确保您使用的是最新版本的Logback.另外，在回发中使用条件语句需要Janino库.

Make sure you are using the latest version of logback. In addition, using conditionals in logback requires the Janino library.

将此添加到pom.xml文件中以获得依赖项:

Add this to your pom.xml file to get the dependency:

    <!-- The org.codehaus.janino:commons-compiler:2.6.1 dependency -->
    <!-- will be automatically pulled in by Maven's transitivity rules -->
    <dependency>
        <groupId>org.codehaus.janino</groupId>
        <artifactId>janino</artifactId>
        <version>2.6.1</version>
    </dependency>

这篇关于日志回条件日志的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！