How to resolve the issue of inconsistent versions of de…

When there are inconsistency issues with the versions of dependencies among multiple modules, various solutions can be implemented.

1. Unified version: Define a version property in the pom.xml file of the parent module, and then reference this property in the dependencies of the child modules. This ensures that all child modules use the same version.

<properties>
    <dependency.version>1.0.0</dependency.version>
</properties>

<dependencies>
    <dependency>
        <groupId>com.example</groupId>
        <artifactId>example-artifact</artifactId>
        <version>${dependency.version}</version>
    </dependency>
</dependencies>

1. Exclude dependencies imported by the parent module using tags, and then import the required versions separately.

<dependency>
    <groupId>com.example</groupId>
    <artifactId>example-artifact</artifactId>
    <version>1.0.0</version>
    <exclusions>
        <exclusion>
            <groupId>com.example</groupId>
            <artifactId>example-artifact</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>com.example</groupId>
    <artifactId>example-artifact</artifactId>
    <version>2.0.0</version>
</dependency>

1. Tags, list all dependencies of child modules and specify the same version. When referencing dependencies in child modules, there is no need to specify the version number.

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>example-artifact</artifactId>
            <version>1.0.0</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>another-artifact</artifactId>
            <version>2.0.0</version>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>com.example</groupId>
        <artifactId>example-artifact</artifactId>
    </dependency>
    <dependency>
        <groupId>com.example</groupId>
        <artifactId>another-artifact</artifactId>
    </dependency>
</dependencies>

Here are several commonly used methods to solve the issue of inconsistent versions of dependencies in Maven multi-module projects. Choose the appropriate method based on the specific situation.