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沉梦听雨
2023-11-09
目录

父子工程项目搭建

# 父子工程项目搭建

# 引言

父工程中的依赖需显示的指定版本号，否则会爆红。

两种 Springboot 项目引用：

  1. 阿里巴巴的
  2. spring 官方的

子工程引用父工程项目：

  1. 有两种方式
  2. 以下这种方式，无需指定版本，但需要指定需要的依赖。（用了 <dependencyManagement> 标签作依赖管理）
  3. 另一种是不做依赖管理，这种情况下子项目无需手动指定依赖引入， 会自动继承父依赖直接使用。

# 父工程

<?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.chenmeng</groupId>
	<artifactId>chenmeng-test-demos</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>chenmeng-test-demos</name>
	<description>测试项目父工程</description>
	<packaging>pom</packaging>

	<!--指定当前项目继承spring-boot-->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.7.17</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>

	<!--项目中依赖版本统一管理-->
	<properties>

		<java.version>1.8</java.version>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

		<mysql.version>8.0.33</mysql.version>
		<projectlombok.version>1.18.26</projectlombok.version>

		<springboot.version>2.7.17</springboot.version>

	</properties>

	<!-- 定义子模块 -->
	<modules>
		<module>excel-demo</module>
	</modules>

	<!-- 定义依赖管理 -->
	<dependencyManagement>
		<!-- 定义共享的依赖项和版本 -->
		<dependencies>

			<!--hutool工具类-->
			<dependency>
				<groupId>cn.hutool</groupId>
				<artifactId>hutool-all</artifactId>
				<version>5.8.18</version>
			</dependency>
			<!-- https://github.com/alibaba/easyexcel -->
			<dependency>
				<groupId>com.alibaba</groupId>
				<artifactId>easyexcel</artifactId>
				<version>3.1.3</version>
			</dependency>
			<!-- swagger + knife4j 接口文档-->
			<dependency>
				<groupId>com.github.xiaoymin</groupId>
				<artifactId>knife4j-spring-boot-starter</artifactId>
				<version>3.0.3</version>
			</dependency>

			<!-- MySQL相关 -->
			<dependency>
				<groupId>com.mysql</groupId>
				<artifactId>mysql-connector-j</artifactId>
				<version>${mysql.version}</version>
				<scope>runtime</scope>
			</dependency>
			<dependency>
				<groupId>org.mybatis.spring.boot</groupId>
				<artifactId>mybatis-spring-boot-starter</artifactId>
				<version>2.2.2</version>
			</dependency>
			<!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
			<dependency>
				<groupId>com.baomidou</groupId>
				<artifactId>mybatis-plus-boot-starter</artifactId>
				<version>3.5.2</version>
			</dependency>

			<!-- SpringBoot初始化相关 -->
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-web</artifactId>
				<version>${springboot.version}</version>
			</dependency>
			<dependency>
				<groupId>org.projectlombok</groupId>
				<artifactId>lombok</artifactId>
				<version>${projectlombok.version}</version>
				<optional>true</optional>
			</dependency>
			<dependency>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-starter-test</artifactId>
				<version>${springboot.version}</version>
				<scope>test</scope>
				<exclusions>
					<exclusion>
						<groupId>org.junit.vintage</groupId>
						<artifactId>junit-vintage-engine</artifactId>
					</exclusion>
				</exclusions>
			</dependency>

		</dependencies>
	</dependencyManagement>

	<build>
		<plugins>
			<!-- java编译插件 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<configuration>
					<source>${java.version}</source>
					<target>${java.version}</target>
					<encoding>UTF-8</encoding>
				</configuration>
			</plugin>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<excludes>
						<exclude>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
						</exclude>
					</excludes>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>
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# 子工程

这里说明一下两种新建模块的情况：

  1. 如果是新建普通 Maven 项目，会自动在父工程下引入 <module>excel-demo</module> 模块，并且在子工程会自动配置父工程依赖
  2. 如果是直接新建 SpringBoot 项目，需要后续自行修改父子工程项目的 pom.xml 文件，指定为父子工程项目，主要是在父工程中引入子模块标签，子工程中指定父工程依赖。
<?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">
	  <!-- 父工程依赖 -->
    <parent>
        <groupId>com.chenmeng</groupId>
        <artifactId>chenmeng-test-demos</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>

    <artifactId>excel-demo</artifactId>
    <name>${project.artifactId}</name>
    <version>0.0.1-SNAPSHOT</version>
    <description>EasyExcel测试项目</description>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>easyexcel</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <!-- MySQL相关 -->
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
        </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>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
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# 可能遇到的问题

Maven多模块项目打包：Unable to find main class-CSDN博客 (opens new window)

# 学习参考

上次更新: 2024/9/25 11:16:13
自定义实现Java Bean属性中列表元素格式校验注解及其实现
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