SLF4J(W): Class path contains multiple SLF4J providers.

问题背景

最近在给某AI项目集成阿里的通义千问SDK，发现竟然有个奇怪的报错，仔细一看发现，我类上用的lombok的@Slf4j注释，阿里用的是org.slf4j.simple.SimpleServiceProvider，但是lombok用的是LogbackServiceProvider，所以就有冲突了，需要解决一下。我的思路是exclude 阿里的sdk包的org.slf4j.simple.SimpleServiceProvider。

SLF4J(W): Class path contains multiple SLF4J providers.
SLF4J(W): Found provider [org.slf4j.simple.SimpleServiceProvider@463b4ac8]
SLF4J(W): Found provider [ch.qos.logback.classic.spi.LogbackServiceProvider@765f05af]

详细报错

2024-10-03 22:23:45 JRebel: 
SLF4J(W): Class path contains multiple SLF4J providers.
SLF4J(W): Found provider [org.slf4j.simple.SimpleServiceProvider@463b4ac8]
SLF4J(W): Found provider [ch.qos.logback.classic.spi.LogbackServiceProvider@765f05af]
SLF4J(W): See https://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J(I): Actual provider is of type [org.slf4j.simple.SimpleServiceProvider@463b4ac8]
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.simple.SimpleLoggerFactory loaded from file:/C:/Users/Administrator/.m2/repository/org/slf4j/slf4j-simple/2.0.13/slf4j-simple-2.0.13.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml: org.slf4j.simple.SimpleLoggerFactory
at org.springframework.util.Assert.instanceCheckFailed(Assert.java:592)
at org.springframework.util.Assert.isInstanceOf(Assert.java:511)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:396)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.beforeInitialize(LogbackLoggingSystem.java:124)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationStartingEvent(LoggingApplicationListener.java:238)
at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:220)
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:185)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:178)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:156)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:138)
at org.springframework.boot.context.event.EventPublishingRunListener.multicastInitialEvent(EventPublishingRunListener.java:136)
at org.springframework.boot.context.event.EventPublishingRunListener.starting(EventPublishingRunListener.java:75)
at org.springframework.boot.SpringApplicationRunListeners.lambda$starting$0(SpringApplicationRunListeners.java:54)
at java.base/java.lang.Iterable.forEach(Iterable.java:75)
at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:118)
at org.springframework.boot.SpringApplicationRunListeners.starting(SpringApplicationRunListeners.java:54)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:326)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1354)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343)
at com.softdev.system.Application.main(Application.java:9)

Process finished with exit code 1

解决方案

其实Slf4j的实现方案有两种，

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>请使用最新版本</version>
</dependency>
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>请使用最新版本</version>
</dependency>

exclude掉阿里自带的slf4j-sample就可以了. 

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dashscope-sdk-java</artifactId>
<version>2.16.5</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
</exclusion>
</exclusions>
</dependency>

验证结果

项目启动成功 

原文地址：https://blog.csdn.net/moshowgame/article/details/142697179

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