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This article introduces the knowledge of "how to solve the log4j-slf4j-impl cannot be present with log4j-to-slf4j error report". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

When building a project, the following error occurred at startup:

SLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [SLF4J: Found binding in] SLF4J: jar:file:/D:/buildSoft/java/maven/jar-center/ch/qos/logback/logback-classic/1.2.3/logback- [jar:file:/D:/buildSoft/java/maven/jar-center/ch/qos/logback/logback-classic/1.2.3/logback-] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] Exception in thread "main" java.lang.ExceptionInInitializerError at com.xt.gateway.GatewayApplication.main (GatewayApplication.java:22) Caused by: org.apache.logging.log4j.LoggingException: log4j-slf4j-impl cannot be present with log4j-to- Slf4j at org.apache.logging.slf4j.Log4jLoggerFactory.validateContext (Log4jLoggerFactory.java:49) at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger (Log4jLoggerFactory.java:39) at org.apache.logging.slf4j.Log4jLoggerFactory.newLogger (Log4jLoggerFactory.java:30) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger (AbstractLoggerAdapter.java:54) at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger (Log4jLoggerFactory.java:30) At org.slf4j.LoggerFactory.getLogger (LoggerFactory.java:363) at org.apache.commons.logging.LogAdapter$Slf4jAdapter.createLocationAwareLog (LogAdapter.java:130) at org.apache.commons.logging.LogAdapter.createLog (LogAdapter.java:91) at org.apache.commons.logging.LogFactory.getLog (LogFactory.java:67) at org.apache.commons.logging.LogFactory.getLog (LogFactory.java:59) at org.springframework.boot.SpringApplication . (SpringApplication.java:196). 1 more

Because the project spring boot uses logback by default, but I specify log4j2 here

Org.springframework.boot spring-boot-starter-log4j2 solution

You only need to exclude the corresponding spring boot starter dependency from the corresponding log dependency.

Org.springframework.boot spring-boot-starter-actuator org.springframework.boot spring-boot-starter-logging org.springframework.cloud spring-cloud-starter-gateway Org.springframework.boot spring-boot-starter-logging org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-logging This is the end of the content of "how to solve log4j-slf4j-impl cannot be present with log4j-to-slf4j errors". Thank you for your reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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