我正在尝试使用Spring Boot和Maven作为依赖项管理器设计一个微服务平台。
这是我尝试实现的架构:
主文件夹
- core/
- pom.xml
- dep-core/
- pom.xml //core module as parent
- src/main/...
- cfm/
- my-cfm-one/
- pom.xml //core module as parent
- src/main/...
- my-cfm-two/
- pom.xml //core module as parent
- src/main/...
- ...
- pfm/
- my-pfm-one/
- pom.xml //core module as parent and import my-cfm-one as dependency
- src/main/...
- my-pfm-two/
- pom.xml //core module as parent and import my-cfm-two as dependency
- src/main/...
- ...
- ms/
- my-ms-one/
- pom.xml //core module as parent and import my-pfm-one and my-pfm-two as dependencies
- src/main/...
- ...
我的问题与 dep-core 模块有关。当我将模块核心设置为一个 cfm 的父级时,我无法访问定义为 dep-core 模块(导入到核心(父(模块中的类(
这是核心模块的pom(我省略了一些部分来缩短(
...
<groupId>it.test</groupId>
<artifactId>core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>core</name>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
...
</properties>
<modules>
<module>dep-core</module>
</modules>
<!-- I also tried ( with and without <module> tag )
<dependencies>
<dependency>
<groupId>it.test</groupId>
<artifactId>dep-core</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
-->
</project>
这是 dep 核心模块的 pom
...
<groupId>it.test</groupId>
<artifactId>dep-core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>dep-core</name>
<parent>
<groupId>it.test</groupId>
<artifactId>core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
...
</dependencies>
<dependencyManagement>
...
</dependencyManagement>
<repositories>
...
</repositories>
</project>
这是一个 cfm 模块的 pom
<groupId>it.test</groupId>
<artifactId>search-cfm</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>search-cfm</name>
<parent>
<groupId>it.test</groupId>
<artifactId>core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath/>
</parent>
<dependencies>
<!--SPRING DEP-->
</dependencies>
</project>
有人能给我正确的方法来设计我的架构并解决我的问题吗?
我还向 github 添加了示例项目以查看问题。
https://github.com/jayturchi/test-maven-architecture
从父 POM 继承依赖项(依赖项将位于您的类路径中,以便您可以访问其类(,必须将依赖项声明为父 POM 的依赖项;因此,要将 dep-core 作为父 POM 中的依赖项,只需将其声明为男性并不能使其成为依赖项。您遇到了问题,因为您无法将深层核心声明为核心的直接依赖项,因为深层核心 POM 是核心 POM 的子级。这会导致一个循环依赖,阻止 maven 编译你的核心。要解决此问题,您需要一个从核心继承并以深层核心作为依赖项的中间 POM。让我们称这首诗为包装纸。现在,您可以将包装器声明为叶项目(cfm 和 pfm(的父 pom。
我发布了核心,包装器和cfm-one的正确POM。
核心网
<groupId>it.test</groupId>
<artifactId>my-cfm-one</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>my-cfm-one</name>
<parent>
<groupId>it.test</groupId>
<artifactId>wrapper</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
包装纸
<groupId>it.test</groupId>
<artifactId>wrapper</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<parent>
<groupId>it.test</groupId>
<artifactId>core</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>it.test</groupId>
<artifactId>dep-core</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
最后是CFM-One
<artifactId>my-cfm-one</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>my-cfm-one</name>
<parent>
<groupId>it.test</groupId>
<artifactId>wrapper</artifactId>
<version>1.0-SNAPSHOT</version>
<relativePath>../</relativePath>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>