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完美解决Logback configuration error detected的问题

今天在springboot项目中替换log4j2日志的时候遇见的问题，闲话不多说。

错误日志

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Logging system failed to initialize using configuration from 'classpath:log4j2-dev.xml'

java.lang.IllegalStateException: Logback configuration error detected:

ERROR in ch.qos.logback.core.joran.spi.Interpreter @3 : 16 - no applicable action for [appenders], current ElementPath  is [[configuration][appenders]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @4 : 67 - no applicable action for [Console], current ElementPath  is [[configuration][appenders][Console]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @5 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][Console][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @10 : 119 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @11 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @12 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @13 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @14 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @16 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @21 : 79 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @22 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @23 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @24 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @25 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @27 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @28 : 79 - no applicable action for [ThresholdFilter], current ElementPath  is [[configuration][appenders][RollingFile][ThresholdFilter]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @32 : 14 - no applicable action for [loggers], current ElementPath  is [[configuration][loggers]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @36 : 64 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @37 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @38 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @39 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @43 : 77 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @44 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @50 : 28 - no applicable action for [root], current ElementPath  is [[configuration][loggers][root]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @52 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @53 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @54 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

     at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java: 162 )

     at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java: 66 )

     at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java: 56 )

     at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java: 114 )

     at org.springframework.boot.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java: 309 )

     at org.springframework.boot.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java: 277 )

     at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java: 240 )

     at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java: 213 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java: 172 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java: 165 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java: 139 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java: 122 )

     at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java: 74 )

     at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java: 54 )

     at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java: 325 )

     at org.springframework.boot.SpringApplication.run(SpringApplication.java: 296 )

     at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java: 121 )

     at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java: 98 )

     at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java: 116 )

     at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java: 83 )

     at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java: 189 )

     at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java: 131 )

     at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java: 230 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java: 228 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$ 1 .runReflectiveCall(SpringJUnit4ClassRunner.java: 287 )

     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java: 12 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java: 289 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java: 247 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java: 94 )

     at org.junit.runners.ParentRunner$ 3 .run(ParentRunner.java: 290 )

     at org.junit.runners.ParentRunner$ 1 .schedule(ParentRunner.java: 71 )

     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java: 288 )

     at org.junit.runners.ParentRunner.access$ 000 (ParentRunner.java: 58 )

     at org.junit.runners.ParentRunner$ 2 .evaluate(ParentRunner.java: 268 )

     at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java: 61 )

     at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java: 70 )

     at org.junit.runners.ParentRunner.run(ParentRunner.java: 363 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java: 191 )

     at org.junit.runner.JUnitCore.run(JUnitCore.java: 137 )

     at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java: 68 )

     at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java: 47 )

     at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java: 242 )

     at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java: 70 )

java.lang.IllegalStateException: Failed to load ApplicationContext

     at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java: 124 )

     at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java: 83 )

     at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java: 189 )

     at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java: 131 )

     at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java: 230 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java: 228 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$ 1 .runReflectiveCall(SpringJUnit4ClassRunner.java: 287 )

     at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java: 12 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java: 289 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java: 247 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java: 94 )

     at org.junit.runners.ParentRunner$ 3 .run(ParentRunner.java: 290 )

     at org.junit.runners.ParentRunner$ 1 .schedule(ParentRunner.java: 71 )

     at org.junit.runners.ParentRunner.runChildren(ParentRunner.java: 288 )

     at org.junit.runners.ParentRunner.access$ 000 (ParentRunner.java: 58 )

     at org.junit.runners.ParentRunner$ 2 .evaluate(ParentRunner.java: 268 )

     at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java: 61 )

     at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java: 70 )

     at org.junit.runners.ParentRunner.run(ParentRunner.java: 363 )

     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java: 191 )

     at org.junit.runner.JUnitCore.run(JUnitCore.java: 137 )

     at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java: 68 )

     at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java: 47 )

     at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java: 242 )

     at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java: 70 )

Caused by: java.lang.IllegalStateException: java.lang.IllegalStateException: Logback configuration error detected:

ERROR in ch.qos.logback.core.joran.spi.Interpreter @3 : 16 - no applicable action for [appenders], current ElementPath  is [[configuration][appenders]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @4 : 67 - no applicable action for [Console], current ElementPath  is [[configuration][appenders][Console]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @5 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][Console][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @10 : 119 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @11 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @12 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @13 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @14 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @16 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @21 : 79 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @22 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @23 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @24 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @25 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @27 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @28 : 79 - no applicable action for [ThresholdFilter], current ElementPath  is [[configuration][appenders][RollingFile][ThresholdFilter]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @32 : 14 - no applicable action for [loggers], current ElementPath  is [[configuration][loggers]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @36 : 64 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @37 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @38 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @39 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @43 : 77 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @44 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @50 : 28 - no applicable action for [root], current ElementPath  is [[configuration][loggers][root]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @52 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @53 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @54 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

     at org.springframework.boot.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java: 316 )

     at org.springframework.boot.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java: 277 )

     at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java: 240 )

     at org.springframework.boot.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java: 213 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java: 172 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java: 165 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java: 139 )

     at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java: 122 )

     at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java: 74 )

     at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java: 54 )

     at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java: 325 )

     at org.springframework.boot.SpringApplication.run(SpringApplication.java: 296 )

     at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java: 121 )

     at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java: 98 )

     at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java: 116 )

     ... 24 more

Caused by: java.lang.IllegalStateException: Logback configuration error detected:

ERROR in ch.qos.logback.core.joran.spi.Interpreter @3 : 16 - no applicable action for [appenders], current ElementPath  is [[configuration][appenders]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @4 : 67 - no applicable action for [Console], current ElementPath  is [[configuration][appenders][Console]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @5 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][Console][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @10 : 119 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @11 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @12 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @13 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @14 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @16 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @21 : 79 - no applicable action for [RollingFile], current ElementPath  is [[configuration][appenders][RollingFile]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @22 : 96 - no applicable action for [PatternLayout], current ElementPath  is [[configuration][appenders][RollingFile][PatternLayout]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @23 : 23 - no applicable action for [Policies], current ElementPath  is [[configuration][appenders][RollingFile][Policies]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @24 : 45 - no applicable action for [TimeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][TimeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @25 : 57 - no applicable action for [SizeBasedTriggeringPolicy], current ElementPath  is [[configuration][appenders][RollingFile][Policies][SizeBasedTriggeringPolicy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @27 : 48 - no applicable action for [DefaultRolloverStrategy], current ElementPath  is [[configuration][appenders][RollingFile][DefaultRolloverStrategy]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @28 : 79 - no applicable action for [ThresholdFilter], current ElementPath  is [[configuration][appenders][RollingFile][ThresholdFilter]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @32 : 14 - no applicable action for [loggers], current ElementPath  is [[configuration][loggers]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @36 : 64 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @37 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @38 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @39 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @43 : 77 - no applicable action for [logger], current ElementPath  is [[configuration][loggers][logger]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @44 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][logger][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @50 : 28 - no applicable action for [root], current ElementPath  is [[configuration][loggers][root]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @52 : 42 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @53 : 43 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

ERROR in ch.qos.logback.core.joran.spi.Interpreter @54 : 44 - no applicable action for [appender-ref], current ElementPath  is [[configuration][loggers][root][appender-ref]]

     at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java: 162 )

     at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java: 66 )

     at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java: 56 )

     at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java: 114 )

     at org.springframework.boot.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java: 309 )

     ... 38 more

Disconnected from the target VM, address: '127.0.0.1:65035' , transport: 'socket'

Process finished with exit code - 1

首先我们看上面的错误日志

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Logging system failed to initialize using configuration from 'classpath:log4j2-dev.xml'

java.lang.IllegalStateException: Logback configuration error detected:

如果只看这两句的话我们可能会认为是我们的日志文件log4j2-dev.xml配置错了，或者路径找不到，其实不然。正解是我们pom文件配置的有问题，jar包存在冲突，下面来看下我们的pom文件吧

pom.xml

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< dependency >

           < groupId >org.springframework.boot</ groupId >

           < artifactId >spring-boot-starter-jdbc</ artifactId >

       </ dependency >

       < dependency >

           < groupId >org.springframework.boot</ groupId >

           < artifactId >spring-boot-starter-web</ artifactId >

       </ dependency >

       < dependency >

           < groupId >org.springframework.boot</ groupId >

           < artifactId >spring-boot-starter-log4j2</ artifactId >

     </ dependency >

上面的pom文件是最初报错时的配置文件，看上面的配置文件貌似没有问题，我们需使用log4j2日志的starter也已经引入了，但是这里我们需要注意一点就是我们在引入spring-boot-starter-web包的时候他里面默认使用了logback日志，这样就会产生日志包的冲突，其实不只是starter-web包默认引入的logback还有很多的包默认引入的logback包，看下图

上图中是这个pom文件的jiar包结构示意图，log4j2部分就是我们新引入的spring-boot-starter-log4j2包，上图中我通过黄线画出了现在系统中所有logback的引入，可以看出所有引用，这里涉及到几个包，分别是web包，mybatis包，jdbc包。那我们现在要解决jar包冲突的问题是不是需要每个包下都排除默认引用的logger日志呢，理论上是完全没有问题的，但是那样岂不是很费事，2种解决办法。

解决办法1

统一排除

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< dependency >

           < groupId >org.springframework.boot</ groupId >

           < artifactId >spring-boot-starter</ artifactId >

           < exclusions >

               < exclusion >

                   < groupId >org.springframework.boot</ groupId >

                   < artifactId >spring-boot-starter-logging</ artifactId >

               </ exclusion >

           </ exclusions >

       </ dependency >

解决办法2

那我只导用了web包，不想导入spring-boot-starter能不能解决呢？

答 ： 能

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< dependency >

          < groupId >org.springframework.boot</ groupId >

          < artifactId >spring-boot-starter-web</ artifactId >

          < exclusions >

              < exclusion >

                  < groupId >org.springframework.boot</ groupId >

                  < artifactId >spring-boot-starter-logging</ artifactId >

              </ exclusion >

          </ exclusions >

      </ dependency >

看见第二个解决办法，问题是不是来了。很多包都默认使用的logback,你单独排除了web包是不是还会出现这个问题，

答 ： 是的会出现，这里就需要知道pom文件的加载顺序了，pom文件的加载顺序也是从上至下执行，那么我们就需要把web包放到pom文件中的第一位，在向下执行的时候也会排除所有的默认logger了。

上面就是两种解决办法。希望能给大家一个参考，也希望大家多多支持。

原文链接：https://blog.csdn.net/m0_37034294/article/details/82801294

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