错误日志

Caused by: 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.Log4jLoggerFactory loaded from file:/E:/IT_zhengqing/soft/soft-dev/Maven/repository-zhengqing/org/slf4j/slf4j-log4j12/1.7.30/slf4j-log4j12-1.7.30.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.Log4jLoggerFactory
	at org.springframework.util.Assert.instanceCheckFailed(Assert.java:699)
	at org.springframework.util.Assert.isInstanceOf(Assert.java:599)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:284)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:104)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:232)
	at org.springframework.boot.context.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:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:74)
	at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:47)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:305)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
	at com.zhengqing.system.SystemApplication.main(SystemApplication.java:15)
	... 5 more

Process finished with exit code 1

问题分析

这里主要分析错误日志信息中的以下3点~

1. LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. 得知日志jar包冲突
2. Either remove Logback or the competing implementation (class org.slf4j.impl.Log4jLoggerFactory loaded from file:/E:/IT_zhengqing/soft/soft-dev/Maven/repository-zhengqing/org/slf4j/slf4j-log4j12/1.7.30/slf4j-log4j12-1.7.30.jar). 提示排除Logback或与其冲突包的实现slf4j-log4j
3. If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.impl.Log4jLoggerFactory 提示如果需要使用WebLogic则添加org.slf4j相关依赖

解决

这里小编采取排除冲突包slf4j-log4j来解决这一问题

pom.xml -> Dependency Analyzer -> 搜索slf4j-log4j -> 右击选择Exclude将其冲突依赖排除

温馨小提示：这里小编是通过maven插件Maven Helper来实现排除冲突的~
Maven Helper：主要用于分析和排除冲突依赖

最后项目启动成功！

今日分享语句：

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