springBoot启动报错log4j冲突
先上一段报错内容
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/D:/soft/apache-tomcat-8.5.31/webapps/ui/WEB-INF/lib/log4j-slf4j-impl-2.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/soft/apache-tomcat-8.5.31/webapps/ui/WEB-INF/lib/logback-classic-1.1.11.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/D:/soft/apache-tomcat-8.5.31/webapps/ui/WEB-INF/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
......
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.apache.logging.slf4j.Log4jLoggerFactory loaded from file:/D:/soft/apache-tomcat-8.5.31/webapps/ui/WEB-INF/lib/log4j-slf4j-impl-2.7.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.apache.logging.slf4j.Log4jLoggerFactory
springBoot 本地报错，查了一番，是logback搞得鬼，打开pom依赖树，搜索logback，发现在spring-boot-starter-web下有间接依赖上logback-classisc，搜索大神们的解答，就是在有这个依赖的dependency中除去他就行了。
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< dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-web</ artifactId > < exclusions > < exclusion > < groupId >ch.qos.logback</ groupId > < artifactId >logback-classic</ artifactId > </ exclusion > </ exclusions > </ dependency > |
SpringBoot启用log4j日志
pom.xml
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<!--排除默认的日志 --> < 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 > <!--启用log4j日志 --> < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-log4j</ artifactId > < version >1.2.8.RELEASE</ version > </ dependency > |
log4j.properties
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log4j.rootLogger=debug, ServerDailyRollingFile, stdout log4j.appender.ServerDailyRollingFile=org.apache.log4j.DailyRollingFileAppender log4j.appender.ServerDailyRollingFile.DatePattern= '.' yyyy-MM-dd log4j.appender.ServerDailyRollingFile.File=C\: //logs/notify-subscription.log log4j.appender.ServerDailyRollingFile.layout=org.apache.log4j.PatternLayout log4j.appender.ServerDailyRollingFile.layout.ConversionPattern=%d - %m%n log4j.appender.ServerDailyRollingFile.Append= true
log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH\:mm\:ss} %p [%c] %m%n |
log4j.properties放在resources目录下，这个log4j是随便配的。
以上为个人经验，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/ss300400a/article/details/81098137
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