一、重複類

解決方法：（刪除其中一個包，現在流行的Java日誌框架用SLF4J，所以保留這個包）

1、在IntelliJ IDEA的pom檔案用“ctrl+shift+alt+U”快捷鍵輸出pom依賴框架，找到commons-logging:commons-logging的引用，這個工程專案是spring-context在引用

2、用<exclusions>方法

<dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-context</artifactId>
 
   <exclusions>
      <exclusion>
         <groupId>commons-logging</groupId>
         <artifactId>commons-logging</artifactId>
      </exclusion>
   </exclusions>
</dependency>

二、版本號衝突

[WARNING] Rule 9: org.apache.maven.plugins.enforcer.DependencyConvergence failed with message:
Failed while enforcing releasability the error(s) are [
Dependency convergence error for xxx.tc:common-zookeeper:1.1.2 paths to dependency are:
+-com.xxx.flight.inter:inter_public_data.cache:1.1.4
  +-xxx.tc:qmq-client:2.0.5
    +-xxx.tc:common-zookeeper:1.1.2
and
+-com.xxx.flight.inter:inter_public_data.cache:1.1.4
  +-xxx.tc:qmq-client:2.0.5
    +-xxx.tc.qtracer:qtracer-instrument-http:1.0.7
      +-xxx.tc.qtracer:qtracer-client:1.0.7
        +-xxx.tc:common-zookeeper:1.1.0
]

用<dependencyManagement>，選擇高版本

1. <dependencyManagement>
2. <dependencies>
3. <dependency>
4. <groupId>xxx.tc</groupId>
5. <artifactId>common-zookeeper</artifactId>
6. <version>1.1.2</version>
7. </dependency>
8. </dependencies>
9. </dependencyManagement
   >