springboot3多模块实践

news2024/10/23 2:49:37

先帖下目录结构，直接在idea里面新建就行，删掉多余的文件
子模块的新建
根目录pom文件，注意modules、packaging，dependencyManagement统一管理依赖，子模块添加依赖的时候就不用加版本号

<?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>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.3.0</version>
        <relativePath/>
    </parent>
    <groupId>com.dashu</groupId>
    <artifactId>technology</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>technology</name>
    <description>technology</description>
    <packaging>pom</packaging>
    <properties>
        <java.version>17</java.version>
        <version>0.0.1-SNAPSHOT</version>
    </properties>
    <modules>
        <module>start</module>
        <module>api</module>
        <module>service</module>
        <module>infrastructure</module>
    </modules>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.dashu</groupId>
                <artifactId>api</artifactId>
                <version>${version}</version>
            </dependency>
            <dependency>
                <groupId>com.dashu</groupId>
                <artifactId>infrastructure</artifactId>
                <version>${version}</version>
            </dependency>
            <dependency>
                <groupId>com.dashu</groupId>
                <artifactId>service</artifactId>
                <version>${version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

start模块pom文件，只放用来启动springboot的依赖和需要暴露的接口模块，注意需要依赖你要提供的api接口模块，就是@RequestMapping、@RestController的那个模块

<?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.dashu</groupId>
        <artifactId>technology</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>start</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>start</name>
    <description>start</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <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>
        </dependency>

        <dependency>
            <groupId>com.dashu</groupId>
            <artifactId>api</artifactId>
        </dependency>
    </dependencies>

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

</project>

帖一个api的模块的pom，其它模块的基本一样

<?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/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.dashu</groupId>
        <artifactId>technology</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>api</artifactId>
    <name>api</name>
    <description>api</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
    </dependencies>

</project>

start启动项需要增加个包扫描@SpringBootApplication(scanBasePackages = {“com.dashu”})，不然访问不了api路径

package com.dashu.start;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication(scanBasePackages = {"com.dashu"})
public class StartApplication {

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

}