【SpringBoot】多模块项目结构搭建

前言:

必需学会SpringBoot基础知识

简介:

Takes an opinionated view of building production-ready Spring applications. Spring Boot favors convention over configuration and is designed to get you up and running as quickly as possible.

工具:

JDK8

apache-maven-3.5.2

IntelliJ IDEA 2018.1.3 x64

准备工作

通过之前章节进行改造，更符合企业需求。

先做一个简单 Web Flux 项目 

理论分析

模型层： model
持久层： persostence
表示层： web

web 依赖 persostence
persostence 依赖 model

选中项目右键点击 New –> Module，选择 Maven 下一步 填写 artifactId （web） 然后，一直下一步到完成；

然后从原始项目里移植代码

如此类推的把另外一个也新建起来

好了！  下面到pom文件加入依赖， 大家应该也有看上面我写的准备工作把？ 对 就按这个做！

first-app-demo

1. 需要手动修改为pom

2. <modules> 是在新建子目录的时候自动增加的，并非手动

<?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>

    <groupId>com.lwc</groupId>
    <artifactId>first-app-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <modules>
        <module>web</module>
        <module>persostence</module>
        <module>model</module>
    </modules>

    <!--修改成 pom-->
    <packaging>pom</packaging>
    <!--
        模型层： model
        持久层： persostence
        表示层： web

        web 依赖 persostence
        persostence 依赖 model

        web UserController -> UserRepository -> User

    -->

    <name>first-app-demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>io.projectreactor</groupId>
            <artifactId>reactor-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

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


</project>

web.pom

1. web 依赖 persostence （复制persostence的<parent>里面的<groupId>、<version>、<artifactId>到 web 的 pom 文件里面）

<?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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>first-app-demo</artifactId>
        <groupId>com.lwc</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>web</artifactId>

    <dependencies>

        <!-- 添加对persostence依赖 -->
        <dependency>
            <groupId>com.lwc</groupId>
            <artifactId>persostence</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

    </dependencies>

</project>

persostence.pom

1. persostence 依赖 model (原理和上面一样)

<?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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>first-app-demo</artifactId>
        <groupId>com.lwc</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>persostence</artifactId>

    <dependencies>
        <!-- 添加对model依赖 -->
        <dependency>
            <groupId>com.lwc</groupId>
            <artifactId>model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

    </dependencies>

</project>

model.pom

1. 不需要依赖任何东西

<?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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>first-app-demo</artifactId>
        <groupId>com.lwc</groupId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>model</artifactId>

</project>

最后Build一下，启动项目。 完成！

源码下载

https://github.com/eddie-code/SpringBootDemo/tree/master/first-app-demo