log4j-over-slf4j.jar 和 slf4j-log4j12.jar 冲突...但我没有 log4j-over-slf4j答案

【问题标题】：log4j-over-slf4j.jar and slf4j-log4j12.jar conflitct... but i don't have log4j-over-slf4jlog4j-over-slf4j.jar 和 slf4j-log4j12.jar 冲突...但我没有 log4j-over-slf4j
【发布时间】：2023-03-21 09:09:01
【问题描述】：

我在我的 maven 项目中使用 SLF4J 和 log4j。当我在 eclipse 中的 tomcat 中运行项目时，一切都很好，并且在 maven 中使用 tomcat maven 插件运行。

但是当我将战争放在我的 tomcat 生产服务器中时，项目没有启动，给我这个错误。

java.lang.IllegalStateException：同时检测到 log4j-over-slf4j.jar 并在类路径上绑定 slf4j-log4j12.jar，抢占堆栈溢出错误。也可以看看 http://www.slf4j.org/codes.html#log4jDelegationLoop 了解更多详情。

我已经在 stackoverflow 中看到了很多关于此错误的答案，并且我已经明白我需要排除冲突 jar。问题是我的项目中没有 log4j-over-slf4j ....war 的 lib 文件夹不包含此 jar，问题仅发生在我的生产服务器的 tomcat 服务器中。我不知道该怎么办。我把我的依赖树放在这里。

[INFO] +- junit:junit:jar:4.12:test
[INFO] |  \- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] +- com.sun.faces:jsf-api:jar:2.2.13:compile
[INFO] +- com.sun.faces:jsf-impl:jar:2.2.13:compile
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] +- org.hibernate:hibernate-entitymanager:jar:5.1.0.Final:compile
[INFO] |  +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile
[INFO] |  +- org.hibernate:hibernate-core:jar:5.1.0.Final:compile
[INFO] |  |  +- (org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile - omitted for duplicate)
[INFO] |  |  +- (org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile - omitted for duplicate)
[INFO] |  |  +- (org.javassist:javassist:jar:3.20.0-GA:compile - omitted for duplicate)
[INFO] |  |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  |  +- (org.apache.geronimo.specs:geronimo-jta_1.1_spec:jar:1.1.1:compile - omitted for duplicate)
[INFO] |  |  +- org.jboss:jandex:jar:2.0.0.Final:compile
[INFO] |  |  +- (com.fasterxml:classmate:jar:1.3.0:compile - omitted for conflict with 1.1.0)
[INFO] |  |  +- (dom4j:dom4j:jar:1.6.1:compile - omitted for duplicate)
[INFO] |  |  \- (org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final:compile - omitted for duplicate)
[INFO] |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  \- (xml-apis:xml-apis:jar:1.0.b2:compile - omitted for conflict with 1.4.01)
[INFO] |  +- org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final:compile
[INFO] |  |  \- (org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile - omitted for duplicate)
[INFO] |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  +- org.javassist:javassist:jar:3.20.0-GA:compile
[INFO] |  \- org.apache.geronimo.specs:geronimo-jta_1.1_spec:jar:1.1.1:compile
[INFO] +- org.hibernate:hibernate-validator:jar:5.2.4.Final:compile
[INFO] |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] |  +- (org.jboss.logging:jboss-logging:jar:3.2.1.Final:compile - omitted for conflict with 3.3.0.Final)
[INFO] |  \- com.fasterxml:classmate:jar:1.1.0:compile
[INFO] +- org.slf4j:slf4j-log4j12:jar:1.7.21:compile
[INFO] |  +- org.slf4j:slf4j-api:jar:1.7.21:compile
[INFO] |  \- log4j:log4j:jar:1.2.17:compile
[INFO] +- log4j:apache-log4j-extras:jar:1.2.17:compile
[INFO] |  \- (log4j:log4j:jar:1.2.17:compile - omitted for duplicate)
[INFO] +- javax.servlet:javax.servlet-api:jar:3.0.1:provided
[INFO] +- org.postgresql:postgresql:jar:9.4.1208.jre7:compile
[INFO] +- org.primefaces:primefaces:jar:6.0:compile
[INFO] +- org.primefaces.themes:start:jar:1.0.10:compile
[INFO] +- commons-io:commons-io:jar:2.5:compile
[INFO] +- org.jxls:jxls-reader:jar:2.0.2:compile
[INFO] |  +- org.apache.commons:commons-digester3:jar:with-deps:3.2:compile
[INFO] |  |  +- cglib:cglib:jar:2.2.2:compile
[INFO] |  |  |  \- asm:asm:jar:3.3.1:compile
[INFO] |  |  +- commons-beanutils:commons-beanutils:jar:1.8.3:compile
[INFO] |  |  |  \- (commons-logging:commons-logging:jar:1.1.1:compile - omitted for duplicate)
[INFO] |  |  \- (commons-logging:commons-logging:jar:1.1.1:compile - omitted for conflict with 1.2)
[INFO] |  +- org.apache.commons:commons-jexl:jar:2.1.1:compile
[INFO] |  |  \- (commons-logging:commons-logging:jar:1.1.1:compile - omitted for duplicate)
[INFO] |  +- org.apache.poi:poi:jar:3.12:compile
[INFO] |  |  \- (commons-codec:commons-codec:jar:1.9:compile - omitted for conflict with 1.10)
[INFO] |  +- org.apache.poi:poi-ooxml:jar:3.12:compile
[INFO] |  |  +- (org.apache.poi:poi:jar:3.12:compile - omitted for duplicate)
[INFO] |  |  \- org.apache.poi:poi-ooxml-schemas:jar:3.12:compile
[INFO] |  |     \- org.apache.xmlbeans:xmlbeans:jar:2.6.0:compile
[INFO] |  |        \- stax:stax-api:jar:1.0.1:compile
[INFO] |  +- (org.slf4j:slf4j-api:jar:1.7.12:compile - omitted for conflict with 1.7.21)
[INFO] |  \- org.slf4j:jcl-over-slf4j:jar:1.7.12:compile
[INFO] |     \- (org.slf4j:slf4j-api:jar:1.7.12:compile - omitted for conflict with 1.7.21)
[INFO] +- org.jsoup:jsoup:jar:1.9.2:compile
[INFO] +- net.sourceforge.htmlunit:htmlunit:jar:2.22:compile
[INFO] |  +- xalan:xalan:jar:2.7.2:compile
[INFO] |  |  \- xalan:serializer:jar:2.7.2:compile
[INFO] |  +- org.apache.commons:commons-lang3:jar:3.4:compile
[INFO] |  +- org.apache.httpcomponents:httpclient:jar:4.5.2:compile
[INFO] |  |  +- org.apache.httpcomponents:httpcore:jar:4.4.4:compile
[INFO] |  |  +- (commons-logging:commons-logging:jar:1.2:compile - omitted for conflict with 1.1.1)
[INFO] |  |  \- (commons-codec:commons-codec:jar:1.9:compile - omitted for duplicate)
[INFO] |  +- org.apache.httpcomponents:httpmime:jar:4.5.2:compile
[INFO] |  |  \- (org.apache.httpcomponents:httpclient:jar:4.5.2:compile - omitted for duplicate)
[INFO] |  +- commons-codec:commons-codec:jar:1.10:compile
[INFO] |  +- net.sourceforge.htmlunit:htmlunit-core-js:jar:2.22:compile
[INFO] |  +- net.sourceforge.htmlunit:neko-htmlunit:jar:2.21:compile
[INFO] |  |  \- xerces:xercesImpl:jar:2.11.0:compile
[INFO] |  |     \- (xml-apis:xml-apis:jar:1.4.01:compile - omitted for conflict with 1.0.b2)
[INFO] |  +- net.sourceforge.cssparser:cssparser:jar:0.9.19:compile
[INFO] |  |  \- org.w3c.css:sac:jar:1.3:compile
[INFO] |  +- (commons-io:commons-io:jar:2.5:compile - omitted for duplicate)
[INFO] |  +- commons-logging:commons-logging:jar:1.2:compile
[INFO] |  \- org.eclipse.jetty.websocket:websocket-client:jar:9.2.17.v20160517:compile
[INFO] |     +- org.eclipse.jetty:jetty-util:jar:9.2.17.v20160517:compile
[INFO] |     +- org.eclipse.jetty:jetty-io:jar:9.2.17.v20160517:compile
[INFO] |     |  \- (org.eclipse.jetty:jetty-util:jar:9.2.17.v20160517:compile - omitted for duplicate)
[INFO] |     \- org.eclipse.jetty.websocket:websocket-common:jar:9.2.17.v20160517:compile
[INFO] |        +- org.eclipse.jetty.websocket:websocket-api:jar:9.2.17.v20160517:compile
[INFO] |        +- (org.eclipse.jetty:jetty-util:jar:9.2.17.v20160517:compile - omitted for duplicate)
[INFO] |        \- (org.eclipse.jetty:jetty-io:jar:9.2.17.v20160517:compile - omitted for duplicate)
[INFO] \- xml-apis:xml-apis:jar:1.4.01:compile

编辑：

经过许多其他测试，这个问题只发生在我的生产服务器tomcat上，我部署在其他8台服务器上，系统运行正常。我想这与在我的生产服务器 tomcat 中运行的其他项目发生冲突。这可能吗？

【问题讨论】：

你检查过 tomcat/lib 文件夹中的 log4j-over-slf4j.jar 吗？
非常感谢@DiogoSantana，您的提示解决了我的问题。这个库在 tomcat lib 文件夹中，它来自非常古老的项目。

标签： java maven tomcat log4j slf4j

【解决方案1】：

您应该在 tomcat/lib 文件夹中有一个 log4j-over-slf4j.jar。你检查了吗？

【讨论】：

非常感谢@DiogoSantana，您的提示解决了我的问题。这个库在 tomcat lib 文件夹中，它来自非常古老的项目。