【dependencyManagement版本管理】dependencies.dependency.version is missing

maven 的gav的v(版本問題)

報錯dependencies.dependency.version is missing

出現的場景

一個項目中有多個模塊

• 父模塊中出現dependencies.dependency.version is missing

• 子模塊中出現dependencies.dependency.version is missing

模塊結構

父模塊結構（pom.xml）

<?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.wangguofa.cloud</groupId>
    <artifactId>cloud</artifactId>
    <version>0.0.1</version>
    <name>cloud</name>
    <packaging>pom</packaging>

    <modules>
        <module>cloud-common</module>
    </modules>

    <properties>
        <java.version>1.8</java.version>
        <mybatis-plus-boot-starter.version>3.3.0</mybatis-plus-boot-starter.version>
        <hutool-all.version>5.5.7</hutool-all.version>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter</artifactId>
            </dependency>
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis-plus-boot-starter.version}</version>
            </dependency>
            <dependency>
                <groupId>cn.hutool</groupId>
                <artifactId>hutool-all</artifactId>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <!-- 父項目中引入部分依賴 -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
    </dependencies>
</project>

點擊Maven的生命周期test出現如下錯誤

[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-data-redis:jar is missing. @ line 48, column 21
[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-aop:jar is missing. @ line 52, column 21

是因為少寫了一個父類的引用,參考鏈接：https://blog.csdn.net/qq_32198005/article/details/77671803

添加一個<parent>標簽

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.7.RELEASE</version>
</parent>

子模塊結構（pom.xml）

<?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">
    <parent>
        <groupId>com.wangguofa.cloud</groupId>
        <artifactId>cloud</artifactId>
        <version>0.0.1</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.wangguofa.cloud</groupId>
    <artifactId>cloud-common</artifactId>
    <version>0.0.1</version>
    <name>cloud-common</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>
</project>

點擊Maven的生命周期test出現如下錯誤

'dependencies.dependency.version' for cn.hutool:hutool-all:jar is missing. @ line 24, column 21
'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter:jar is missing. @ line 38, column 21

子項目的版本，如果沒有添加是根據父項目的，觀察到dependencyManagement並沒有寫這兩個的版本，需要在父項目中添加版本

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter</artifactId>
	<version>${spring-boot.version}</version>
</dependency>
<dependency>
	<groupId>cn.hutool</groupId>
	<artifactId>hutool-all</artifactId>
	<version>${hutool-all.version}</version>
</dependency>