springboot3多模块实践

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);}}