部署多功能模块依赖项目中解决的问题

目录

• 介绍
• 问题一：如何让打包出来的Gateway.jar对UserManagement.jar的依赖
• 问题二：在阿里云流水线上打包报错找不到父模块的pom

介绍

做一个用户管理项目，采用的Spring-Cloud技术，还没确定最终的项目结构，所以展示的只是整个项目的一部分（Eureka在另一个工程中），我要说的工程是完整的，工程整体结构如下图所示。

在部署该工程过程中主要遇到两个问题，两个问题均与pom.xml文件有关系，在此主要讨论pom文件的设置。展示pom文件如下，Gateway模块依赖UserManagement模块且两个模块均需要生成jar包提供给系统执行。
MAP pom.xml（父）

<?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>spring-boot-starter-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>2.3.1.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>com.aci.ma</groupId>
    <artifactId>MAP</artifactId>
    <version>1.0-SNAPSHOT</version>
    <name>MAP</name>
    <packaging>pom</packaging>

    <properties>
        <java.version>1.8</java.version>
        <spring.cloud-version>Hoxton.SR8</spring.cloud-version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.20</version>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.12</version>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud-version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <modules>
<!--        按子目录名读取解析-->
        <module>UserManagement</module>
        <module>Gateway</module>
    </modules>

</project>

Gateway 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.aci.ma</groupId>
        <artifactId>MAP</artifactId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath> <!-- lookup parent from repository -->
    </parent>
    <artifactId>Gateway</artifactId>
    <packaging>jar</packaging>
    <name>Gateway</name>

    <properties>
        <skipTests>true</skipTests>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</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>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>com.aci.ma</groupId>
            <artifactId>UserManagement</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

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

</project>

UserManagement 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<artifactId>UserManagement</artifactId>
	<packaging>jar</packaging>

	<name>UserManagement</name>
	<description>MAP用户管理后端</description>

	<parent>
		<groupId>com.aci.ma</groupId>
		<artifactId>MAP</artifactId>
		<version>1.0-SNAPSHOT</version>
		<relativePath>../pom.xml</relativePath> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<skipTests>true</skipTests>
	</properties>

	<dependencies>
		<dependency>
			<!-- 字符编解码 -->
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>1.11</version>
		</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>
		</dependency>
		<dependency>
			<!-- 做java代码和json的转换 -->
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.2.70</version>
		</dependency>
		<dependency>
			<!-- 封装io操作 -->
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.5</version>
		</dependency>
		<dependency>
			<!-- 针对面向切面编程 -->
			<groupId>aopalliance</groupId>
			<artifactId>aopalliance</artifactId>
			<version>1.0</version>
		</dependency>

		<!--shiro和spring整合-->
		<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-spring</artifactId>
			<version>1.6.0</version>
		</dependency>
		<!--shiro核心包-->
		<dependency>
			<groupId>org.apache.shiro</groupId>
			<artifactId>shiro-core</artifactId>
			<version>1.6.0</version>
		</dependency>
		<!--shiro与redis整合-->
		<dependency>
			<groupId>org.crazycake</groupId>
			<artifactId>shiro-redis</artifactId>
			<version>3.1.0</version>
		</dependency>
		<dependency>
			<groupId>com.h2database</groupId>
			<artifactId>h2</artifactId>
			<scope>runtime</scope>
		</dependency>
		<!-- <dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency> -->
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.11</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-openfeign</artifactId>
		</dependency>
		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.3.2</version>
		</dependency>
    </dependencies>

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

</project>

以上是解决问题后的pom文件

问题一：如何让打包出来的Gateway.jar对UserManagement.jar的依赖

从网上找了些资料，有说换mvn命令的，有说将build标签放在父pom中的，有说可以只在依赖包中设置build标签打出包含所有它依赖包的jar文件。实践证明，mvn命令的效果是一样的（尽管过程中有时甚至都过不了mvn打包环节的，而且一会过了一会儿过不了）；如果最终你想让子模块打出的包通过java -jar命令运行出来（运行不出来报什么清单的错），就必须在子pom文件中声明build标签。最终我在maven多模块项目中子模块可以运行，打包报错找到答案：需要将UserManagement模块的普通包和可执行包分开生成，既能执行也能提供Gateway的依赖。

问题二：在阿里云流水线上打包报错找不到父模块的pom

参考链接：maven报错Non-resolvable parent POM---pom找不到parent指明relativePath的值即可（由于我指明的值是relativePath的默认值，所以我认为可能的原因是需要展开relativePath标签，至少本地测试没问题）