Resolution of the jar version conflict problem in Maven

For example, the Struts-core,hibernate-core is introduced in the parent project and the jar package is found to be in conflict. Javassist There is a conflict on the version.

Method One:

<Dependency>          <groupId>Org.apache.struts</groupId>          <Artifactid>Struts2-core</Artifactid>          <version>2.3.24</version>          <!--Lock this javassist . -          <Exclusions>              <exclusion>                  <Artifactid>Javassist</Artifactid>                  <groupId>Javassist</groupId>              </exclusion>          </Exclusions>      </Dependency>

After OK, the dependency in the Pom.xml file will have an extra exclusions tag to lock the package you want to lock.

Method Two: Set the jar package to be locked directly in the dependencymanagement tag in the Pom.xml file.

<!--version Lock Management -  <dependencymanagement>      <Dependencies>          <Dependency>              <groupId>Org.springframework</groupId>              <Artifactid>Spring-beans</Artifactid>              <version>4.2.4.RELEASE</version>          </Dependency>          <Dependency>              <groupId>Org.springframework</groupId>              <Artifactid>Spring-context</Artifactid>              <version>4.2.4.RELEASE</version>          </Dependency>      </Dependencies>  </dependencymanagement>

To invoke those jar packages that are locked, it is possible to invoke the dependencies tag outside of the dependencymanagement.

<!--use a locked version (no version number is specified) -      <Dependency>          <groupId>Org.springframework</groupId>          <Artifactid>Spring-beans</Artifactid>      </Dependency>      <Dependency>          <groupId>Org.springframework</groupId>          <Artifactid>Spring-context</Artifactid>      </Dependency>

Method Three: Specify the version number in the Properties tab in the Pom.xml file.

  <!--version of Lock -  <Properties>      <spring.version>4.2.4.RELEASE</spring.version>      <struts.version>2.3.24</struts.version>      <hibernate.version>5.0.7.Final</hibernate.version>      <mysql.version>5.1.6</mysql.version>      <log4j.version>1.2.12</log4j.version>  </Properties>

When the jar package is introduced, it is declared as an annotated version.

      <!--use a locked version -      <Dependency>          <groupId>Org.springframework</groupId>          <Artifactid>Spring-web</Artifactid>          <version>${spring.version}</version>      </Dependency>

Resolution of the jar version conflict problem in Maven