springBoot启动报错log4j冲突的解决方案_Java教程

springBoot启动报错log4j冲突的解决方案

2021-10-29 10:36晓明兄 Java教程

这篇文章主要介绍了springBoot启动报错log4j冲突的解决方案，具有很好的参考价值，希望对大家有所帮助。

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。

				?

									<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

				?

									<!--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

				?

									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