maven多模块依赖版本不一致问题

迷南。 2022-10-12 01:12 686阅读 0赞

### maven多模块依赖版本不一致问题 ###

*  1. 问题描述
 *  2. 问题分析
 *   *  2.1 maven help插件分析
     *  2.2 maven依赖树分析
     *  2.3 父类定义版本
 *  3. 解决方案
 *  4.项目pom
 *   *  4.1 父类依赖
     *  4.2 子模块test-common依赖
     *  4.3 子模块test-web依赖

# 1. 问题描述 #

记录一个很有意思的问题，父工程A下边两个模块B与C，B依赖6.0.16.Final版本hibernate-validator，C依赖B，但是C中hibernate-validator版本竟然是6.2.0.Final。  
如图所示：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70]

# 2. 问题分析 #

原因是在父类spring-boot-starter-parent的spring-boot-dependencies中定义了hibernate-validator.version 版本号6.2.0.Final。

test-common中显示的指明了hibernate-validator版本号位6.0.16.Final，而在打包的时候仍然引用的是spring-boot-starter-paren父类中定义的版本号6.2.0.Final。

所以才会出现test-common中是6.0.16，test-web虽然引用了test-common，但是引用的并不是项目中的tets-common，而是打成jar包的test-common，而打成jar包的test-common依赖的是父类中定义的6.2.0版本。

这个可以通过mvnHelp或者打出mvn依赖树分析

## 2.1 maven help插件分析 ##

打开pom文件，左下角txt切换到Dependency Analyzer  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 1]

## 2.2 maven依赖树分析 ##

## cd 到pom文件根目录，执行mvn dependency:tree > tree.txt
    D:\work\ennwork\test\test-common>mvn dependency:tree > tree.txt

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 2]

## 2.3 父类定义版本 ##

1.  父类pom

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.5.2</version>
            <relativePath/>
        </parent>

1.  spring-boot-starter-parent-2.5.2.pom

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-dependencies</artifactId>
        <version>2.5.2</version>
      </parent>

1.  spring-boot-dependencies-2.5.2.pom,这个就是打包所引用的依赖。

<hibernate.version>5.4.32.Final</hibernate.version>
        <hibernate-validator.version>6.2.0.Final</hibernate-validator.version>

# 3. 解决方案 #

解决方案就是排除父类中定义版本的依赖，从新引入新版本依赖。当然也可以与父类版本依赖保持一致。

<dependency>
    			<groupId>com.example</groupId>
    			<artifactId>common-customize-core</artifactId>
    			<version>0.0.1-SNAPSHOT</version>
    			<exclusions>
    				<exclusion>
    					<groupId>org.apache.commons</groupId>
    					<artifactId>commons-lang3</artifactId>
    				</exclusion>
    			</exclusions>
    		</dependency>
    		<dependency>
    			<groupId>org.apache.commons</groupId>
    			<artifactId>commons-lang3</artifactId>
    			<version>3.7</version>
    		</dependency>

# 4.项目pom #

## 4.1 父类依赖 ##

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.example</groupId>
        <artifactId>test</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <name>test</name>
        <packaging>pom</packaging>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.5.2</version>
            <relativePath/>
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <java.version>1.8</java.version>
            <test-common.version>1.0.0-SNAPSHOT</test-common.version>
            <rdfa.framework.version>1.4.0-RELEASE</rdfa.framework.version>
        </properties>
    
        <modules>
            <module>test-common</module>
            <module>test-web</module>
        </modules>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <configuration>
                        <excludes>
                            <exclude>
                                <groupId>org.projectlombok</groupId>
                                <artifactId>lombok</artifactId>
                            </exclude>
                        </excludes>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    </project>

## 4.2 子模块test-common依赖 ##

## 4.3 子模块test-web依赖 ##

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <parent>
            <artifactId>test</artifactId>
            <groupId>com.example</groupId>
            <version>1.0.0-SNAPSHOT</version>
        </parent>
    
        <artifactId>test-web</artifactId>
        <packaging>jar</packaging>
    
        <dependencies>
            <dependency>
                <groupId>com.example</groupId>
                <artifactId>test-common</artifactId>
                <version>1.0.0-SNAPSHOT</version>
                <scope>provided</scope>
            </dependency>
        </dependencies>
        <build>
            <resources>
                <resource>
                    <directory>src/main/resources</directory>
                    <filtering>true</filtering>
                </resource>
            </resources>
            <plugins>
                <plugin>
                    <groupId>org.mybatis.generator</groupId>
                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                    <version>1.3.7</version>
                    <configuration>
                        <verbose>true</verbose>
                        <overwrite>true</overwrite>
                    </configuration>
                    <dependencies>
                        <dependency>
                            <groupId>mysql</groupId>
                            <artifactId>mysql-connector-java</artifactId>
                            <version>8.0.21</version>
                        </dependency>
                    </dependencies>
                </plugin>
            </plugins>
        </build>
    </project>

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