Maven搭建spring boot多模块项目

maven使用IDEA创建单模块是很简单的，但是一般企业级的项目是需要多个子模块的组合，下面使用多个模块的简单介绍。

概要

tool: idea
projectName: zeus
groupId: com.example

parent artifactId: zeus-all

common artifactId: zeus-common
dao artifactId: zeus-dao
service artifactId: zeus-service
web artifactId: zeus-web

项目创建步骤

1. 创建项目父模块

父模块的结构如下

创建项目父模块

修改父pom.xml文件的artifactId值为zeus-all

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         
         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>

    <groupId>com.example</groupId>
    <artifactId>zeus-all</artifactId>
    <version>1.0-SNAPSHOT</version>
</project>

删除父模块下的src文件夹，删除后的目录结构如下

删除父模块下的src文件夹

2. 新建子模块

建子模块方法如下

建子模块

分别创建zeus-common子模块，zeus-dao子模块，zeus-service子模块，zeus-web子模块

创建子模块后的项目文件结构

3. 修改pom.xml文件

3.1 修改zeus-common模块的pom.xml文件

因zeus-common属于最低层依赖，故无需修改

3.2 修改zeus-dao模块的pom.xml文件

添加对zeus-common模块的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>zeus-all</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>zeus-dao</artifactId>

    <!--add zeus-common module dependency-->
    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

3.3 修改zeus-service模块的pom.xml文件

添加zeus-common、zeus-dao模块的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>zeus-all</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>zeus-service</artifactId>

    <!-- add zeus-common, zeus-dao module dependency -->
    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

</project>

3.4 修改zeus-web模块的pom.xml文件

添加zeus-common、zeus-dao、zeus-service模块的依赖，以及spring boot的starter web等的依赖

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>zeus-all</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>zeus-web</artifactId>

    <dependencies>
        <!-- add zeus-common, zeus-dao, zeus-service module dependency-->
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>zeus-service</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>

        <!-- add spring boot starter and web dependency -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <!-- add projectName, spring boot maven plugin -->
    <build>
        <finalName>zeus</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

3.5 修改父模块的pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         
         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>

    <groupId>com.example</groupId>
    <artifactId>zeus-all</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>zeus-common</module>
        <module>zeus-dao</module>
        <module>zeus-service</module>
        <module>zeus-web</module>
    </modules>

    <!-- add spring boot parent dependency -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
    </parent>

</project>

4. 创建spring main文件

创建文件

创建Main文件

文件内容

package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class ZeusApplication {

    @RequestMapping("/")
    @ResponseBody
    public String home() {
        return "hello zeus! ";
    }

    public static void main(String[] args) {
        SpringApplication.run(ZeusApplication.class, args);
    }
}

编译

在项目主模块目录下，执行如下

$ mvn compile

打包