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springboot项目启动报错：java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext

提问者：帅平问题分类：微服务

新创建一个springboot项目，引入了log4j，结果启动的时候报错了，具体报错信息如下：

Exception in thread "main" java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.Reload4jLoggerFactory loaded from file:/C:/Users/Administrator/.m2/repository/org/slf4j/slf4j-reload4j/1.7.36/slf4j-reload4j-1.7.36.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Reload4jLoggerFactory
	at org.springframework.util.Assert.instanceCheckFailed(Assert.java:702)
	at org.springframework.util.Assert.isInstanceOf(Assert.java:621)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:294)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:118)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:238)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:220)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
	at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:79)
	at org.springframework.boot.SpringApplicationRunListeners.lambda$starting```CODE```(SpringApplicationRunListeners.java:56)
	at java.util.ArrayList.forEach(Unknown Source)
	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:120)
	at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:56)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:298)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292)
	at com.ratelimit.demo.Application.main(Application.java:9)

请问怎么解决

Log4j

发布于：2年前 (2023-03-22) IP属地：四川省

1 个回答

帅平提问者

pom里面引入的jar信息如下：

<!-- log start -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <scope>provided</scope>
        </dependency>

发布于：2年前 (2023-03-22) IP属地：四川省

望北海

再springboot项目中，默认已经引入了log4j的框架，所以这里相当于引入了两次log4j框架，把pom里面的这个slf4j-api和slf4j-log4j12 这个去掉即可。

发布于：2年前 (2023-03-22) IP属地：四川省

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