如何在我的 Maven Spring Boot 多模块项目的测试中引用兄弟模块？

Posted 2023-02-26

【中文标题】如何在我的 Maven Spring Boot 多模块项目的测试中引用兄弟模块？

【英文标题】：How to reference sibling module in a test for my maven spring boot multi-module project?

【发布时间】：2020-03-20 23:02:05

【问题描述】：

如何在 Maven 中包含兄弟模块作为我的 Spring Boot 测试的测试依赖项？

我有一个小的多模块 maven 项目，其中包含一个 Spring Boot Web 应用程序 (querying-api )、一个公共库 (domain-definitions) 和一个初始化脚本（数据库加载器）。

我正在我的 querying-api 模块中编写测试用例来测试我的 API，我想在测试开始之前运行我的 database-loader 服务使用预定义的测试数据加载数据库，同时测试加载器是否仍然有效。但是在运行mvn clean package 时出现以下错误：

[ERROR] Failed to execute goal on project querying-api: Could not resolve dependencies for project com.my.little.package:querying-api:jar:1.0.0: Failure to find com.my.little.package:database-loader:jar:1.0.0 in http://mycompanysnexusrepo.com/nexus/content/repositories/EAJAVA/ was cached in the local repository, resolution will not be reattempted until the update interval of EAJAVA has elapsed or updates are forced -> [Help 1]

测试引用通用域定义库没有问题...

---

父 POM 文件：

<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>
    <packaging>pom</packaging>
    <name>my-little-project</name>
    <description>Project for my little microservice</description>
    <groupId>com.my.little.package</groupId>
    <artifactId>my-little-project</artifactId>
    <version>1.0.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.8.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring.security.version>2.3.5.RELEASE</spring.security.version>
        <springfox.version>2.7.0</springfox.version>
    </properties>

    <modules>
        <module>domain-definitions</module>
        <module>database-loader</module>
        <module>querying-api</module>
    </modules>

    <distributionManagement>
        <repository>
            <id>EAJAVA</id>
            <url>http://mycompanysnexusrepo.com/nexus/content/repositories/EAJAVA/</url>
        </repository>
    </distributionManagement>

    <dependencies>
        <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>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.my.little.package</groupId>
                <artifactId>domain-definitions</artifactId>
                <version>$project.version</version>
            </dependency>

            <dependency>
                <groupId>com.my.little.package</groupId>
                <artifactId>database-loader</artifactId>
                <version>$project.version</version>
                <scope>test</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

---

querying-api POM 文件（用于查询数据库的 Spring Boot 应用）：

<?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>
    <artifactId>querying-api</artifactId>
    <packaging>jar</packaging>
    <name>querying-api</name>
    <description>Spring boot app for querying the database</description>

    <parent>
        <groupId>com.my.little.package</groupId>
        <artifactId>my-little-project</artifactId>
        <version>1.0.0</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>com.my.little.package</groupId>
            <artifactId>domain-definitions</artifactId>
        </dependency>
        <dependency>
            <groupId>com.my.little.package</groupId>
            <artifactId>database-loader</artifactId>
            <version>$project.version</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>querying-api</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

---

域定义 POM 文件（通用库）：

<?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>
        <groupId>com.my.little.package</groupId>
        <artifactId>my-little-project</artifactId>
        <version>1.0.0</version>
    </parent>

    <artifactId>domain-definitions</artifactId>
    <name>domain-definitions</name>
    <description>Classes to define the structure of the tables</description>
</project>

---

数据库加载器 POM 文件：

<?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>
    <artifactId>database-loader</artifactId>
    <packaging>jar</packaging>
    <name>database-loader</name>
    <description>Java script to load data into the database for the first time</description>

    <parent>
        <groupId>com.my.little.package</groupId>
        <artifactId>my-little-project</artifactId>
        <version>1.0.0</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>com.my.little.package</groupId>
            <artifactId>domain-definitions</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

【参考方案1】：

这可能是因为在本地存储库中找不到库 jar。您需要先执行：mvn clean install。 这会将 lib jar 安装到您的本地存储库中，当您执行 package 目标时，maven 可以轻松找到它。

在此解释：How are "mvn clean package" and "mvn clean install" different?

此外，如果您仅在测试中使用同级模块，那么您可以将范围定义为 test 在依赖项中。

     <dependency>
        <groupId>com.my.little.package</groupId>
        <artifactId>domain-definitions</artifactId>
        <scope>test</scope>
    </dependency>

【讨论】：

糟糕，如果我的帖子不清楚，很抱歉，domain-definitions 库工作正常。而且我可以将它作为依赖项包含在我的应用程序querying-api 中，而无需先运行mvn clean install。但由于某种原因，java 脚本database-loader 无法作为测试依赖项导入。我不知道为什么我可以毫无问题地导入domain-definitions，但不能通过mvn clean package 导入database-loader。