文章目錄

• • • • • • 異常現象：
          • 解決方案：
          • 總結

異常現象：

SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/D:/Program%20Files/JavaEclipse/repo/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/D:/Program%20Files/JavaEclipse/repo/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder] Logging system failed to initialize using configuration from 'classpath:log4j.properties' java.lang.IllegalStateException: Could not initialize Logback logging from classpath:log4j.propertiesat org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:156)at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithSpecificConfig(AbstractLoggingSystem.java:67)at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:57)at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:117)at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:295)at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:263)at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:226)at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:199)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:127)at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:75)at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:347)at org.springframework.boot.SpringApplication.run(SpringApplication.java:306)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)at com.example.demo.DemoApplication.main(DemoApplication.java:12) Caused by: ch.qos.logback.core.LogbackException: Unexpected filename extension of file [file:/F:/spingboot/onepiece/target/classes/log4j.properties]. Should be either .groovy or .xmlat ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:77)at org.springframework.boot.logging.logback.LogbackLoggingSystem.configureByResourceUrl(LogbackLoggingSystem.java:183)at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:152)

解決方案：

分別在starter 和 starter-web添加 如下內容,只在start-web下添加,無法排除

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><exclusions><!-- 排除自帶的logback依賴 --><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><exclusions><!-- 排除自帶的logback依賴 --><exclusion><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-logging</artifactId></exclusion></exclusions></dependency>

如果集成amqp

<!--amqp協議--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-amqp</artifactId><exclusions><exclusion><artifactId>spring-boot-starter-logging</artifactId><groupId>org.springframework.boot</groupId></exclusion></exclusions></dependency>

總結

只要集成類似下面這種依賴，借助插件可以看一下需要排除的依賴

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-xxx</artifactId></dependency>

案例
需求，排除logback，但是這個依賴在哪呢？

總結

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