老师 导入了jar之后出现包冲突问题

Question

老师这里没有整合进业务里面，我整合进去了，出现了一下包冲突的问题（我个人认为）
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.Log4jLoggerFactory loaded from file:/Users/GreenArrow/.m2/repository/org/slf4j/slf4j-log4j12/1.7.25/slf4j-log4j12-1.7.25.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:637)
at org.springframework.util.Assert.isInstanceOf(Assert.java:537)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:274)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:99)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:191)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:170)
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:68)
at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:48)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243)
at com.stylefeng.guns.rest.GatewayApplication.main(GatewayApplication.java:21)
这个log4j这个包我有，不知道是哪里的问题，弄了一个晚上了，希望老师帮帮忙。

Answer 1

Allen 2020-01-31 17:15:59

日志包冲突了， 让你用slf4j ，但是你用的是Logback 

• 提问者 weixin_慕用7362611 #1

  非常感谢！

• super_小小胡 #2

  同问，老师请问下这个如何解决，gateway启动的时候就报这个错误了

• Allen 回复 super_小小胡 #3

  那就看你加了什么， 然后一点点调试。 包冲突的问题光看错误是看不出来的。