springboot项目切分多个module

实际上我们的项目肯定不是，初始化一个springboot项目就完事了，我们可能要分成一个个子模块，互相依赖的情况。中间有的模块就是提供DAO这些基础，有的是提供API接口服务的，有的则是独立的给APP或者web端接口的。如何去划分模块：（1）创建项目创建一个maven项目，作为总的依赖，要把src里面都删除，仅仅留下来个POM文件作为root和一个说明文档就可以了。（2）先建一个module这里创

我是坑货

2966人浏览 · 2022-03-07 11:47:59

我是坑货 · 2022-03-07 11:47:59 发布

实际上我们的项目肯定不是，初始化一个springboot项目就完事了，我们可能要分成一个个子模块，互相依赖的情况。中间有的模块就是提供DAO这些基础，有的是提供API接口服务的，有的则是独立的给APP或者web端接口的。

如何去划分模块：
（1）创建项目
创建一个maven项目，作为总的依赖，要把src里面都删除，仅仅留下来个POM文件作为root和一个说明文档就可以了。

（2）先建一个module
这里创建module跟创建maven工程一样，我们新建的项目路径都尽量统一，比如：

module1
com.zp.xxx.core
module2
com.zp.xxx.api
module3
com.zp.xxx.app

(3）整理pom文件
第一步是project的pom文件
添加modules标签

    <modules>
        <module>coupon-template-serv</module>
        <module>coupon-template-api</module>
        <module>coupon-template-dao</module>
    </modules>

打包方式修改成pom

 <packaging>pom</packaging>

mudule的pom文件修改，将之前生成的groupid那一块修改成这个样子

    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>com.zp.springboot</groupId>
        <artifactId>coupon</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <artifactId>coupon-template-serv</artifactId>
    <packaging>jar</packaging>

PS中间会有pom文件在idea里面变橘黄的情况，实际上点击pom文件田间maven工程就可以。

如果设置好，在idea侧边栏的maven里面会自动识别那个是root文件；

在这里插入图片描述
示例：
project pom

<?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.zp.springboot</groupId>
    <artifactId>coupon</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <modules>
        <module>coupon-template-serv</module>
        <module>coupon-template-api</module>
        <module>coupon-template-dao</module>
    </modules>

    <packaging>pom</packaging>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </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>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <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>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>com.zp.springboot.coupon.coupon.CouponApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

module pom文件

<?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>

    <parent>
        <groupId>com.zp.springboot</groupId>
        <artifactId>coupon</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

<!--    <groupId>com.zp.springboot</groupId>-->
    <artifactId>coupon-template-dao</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>coupon-template-dao</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

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

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </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>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <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>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>com.zp.springboot.demo.DemoApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>