Maven，继承pom模块

Question

我正在编写项目，但是在编译项目时遇到问题。导入必要的依赖项（如pom文件所示）后，我无法运行该项目。

<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>


  <artifactId>universeBySali-web</artifactId>
  <packaging>war</packaging>

   <parent>
    <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
         <version>1.3.6.RELEASE</version>
     </parent>

    <properties>
        <java.version>13.0.2</java.version>
     </properties>

    <dependencies>
        <dependency>
            <groupId>com.vaadin</groupId>
            <artifactId>vaadin-spring-boot-starter</artifactId>
            <version>15.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.sali</groupId>
            <artifactId>universeBySali-ui</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    </dependencies>

        <build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <executable>true</executable>
            </configuration>
        </plugin>

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <configuration>
                <failOnMissingWebXml>false</failOnMissingWebXml>
            </configuration>
        </plugin>
    </plugins>
  </build>
</project>

它在pom文件上显示的错误如下：

项目构建错误：POM org.springframework.boot：universeBySali-web：1.3.6.RELEASE（C：\ Users \ User \ Desktop \ Materiale \ Desktop \ Java Projects \ universeBySali \ universeBySali-web的'parent.relativePath' \ pom.xml）指向com.sali：universeBySali而不是org.springframework.boot：spring-boot-starter-parent，请验证您的项目结构

此pom文件具有一个父pom，如下所示：

<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.sali</groupId>
  <artifactId>universeBySali</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
    <module>universeBySali-Model</module>
    <module>universeBySali-repository</module>
    <module>universeBySali-service</module>
    <module>universeBySali-util</module>
    <module>universeBySali-web</module>
    <module>universeBySali-ui</module>
  </modules>
</project>

有人可以告诉我我在做什么错吗？谢谢

Answer 1

默认情况下，Maven假定父级具有以下relativePath：../pom.xml。Maven会尝试匹配groupId / artifactId / version，如果未成功，则会引发警告并使用“外部”父级。为了确保Maven不会尝试将父级作为多模块的一部分进行求解，应将<relativePath/>添加到父级。