maven依赖包冲突解决办法

时间：2023-03-09 02:04:13
maven依赖包冲突解决办法

今天在写一个demo时报了以下错误

SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in [jar:file:/D:/chengxu/mavenRepository/org/slf4j/slf4j-log4j12/1.7./slf4j-log4j12-1.7..jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in [jar:file:/D:/chengxu/mavenRepository/ch/qos/logback/logback-classic/1.2./logback-classic-1.2..jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]

log4j:WARN No appenders could be found for logger (us.codecraft.webmagic.scheduler.QueueScheduler).

log4j:WARN Please initialize the log4j system properly.

log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

一看就是 SLF4J 依赖冲突，查看一下有哪些包依赖了 SLF4J

使用命令：

mvn dependency:tree -Dverbose -Dincludes=org.slf4j

输出如下

[INFO] --- maven-dependency-plugin:3.0.:tree (default-cli) @ stock ---

[INFO] Verbose not supported since maven-dependency-plugin 3.0

[INFO] com.huitong:stock:pom:1.0-SNAPSHOT

[INFO] +- us.codecraft:webmagic-core:jar:0.7.:compile

[INFO] |  +- org.slf4j:slf4j-api:jar:1.7.:compile

[INFO] |  \- org.slf4j:slf4j-log4j12:jar:1.7.:compile

[INFO] \- org.springframework.boot:spring-boot-starter-aop:jar:2.0..RELEASE:compile

[INFO]    \- org.springframework.boot:spring-boot-starter:jar:2.0..RELEASE:compile

[INFO]       \- org.springframework.boot:spring-boot-starter-logging:jar:2.0..RELEASE:compile

[INFO]          \- org.slf4j:jul-to-slf4j:jar:1.7.:compile

可以看到webmagic-core 和 springboot-starter-aop 相冲突，所以在 pom 文件修改

<dependency>

      <groupId>us.codecraft</groupId>

      <artifactId>webmagic-core</artifactId>

      <version>0.7.</version>

      <exclusions>

        <exclusion>

          <groupId>org.slf4j</groupId>

          <artifactId>slf4j-log4j12</artifactId>

        </exclusion>

        <exclusion>

          <groupId>log4j</groupId>

          <artifactId>log4j</artifactId>

        </exclusion>

      </exclusions>

    </dependency>

再运行即可

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