IDEA创建父子项目

一、创建父工程

1、点击 File——》New——》Project

2、只选择红框中的数据，不要选择 Create from archetype，点击 Next

3、填写name、Location、GroupId、ArtifactId，在点击 Finish

4、父工程创建成功后，删除 src 文件夹

二、创建子工程

5、右键父工程名称，选择New——》Module

6、只选择红框中的数据，不要选择 Create from archetype，点击 Next

7、填写name、Location、GroupId、ArtifactId，在点击 Finish

8、创建子工程成功

三、引入pom.xml文件

9、父工程demo的pom.xml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 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>org.example</groupId><artifactId>demo</artifactId><packaging>pom</packaging><version>1.0-SNAPSHOT</version><modules><module>order-service</module></modules><!--设置父工程的包为pom--><packaging>pom</packaging><!--引入Spring Boot项目，子项目都是这个版本--><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.9.RELEASE</version><relativePath/></parent><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target><spring-cloud.version>Hoxton.SR10</spring-cloud.version><mysql.version>5.1.47</mysql.version><mybatis.version>2.1.1</mybatis.version></properties><!--对子项目进行版本管理--><dependencyManagement><dependencies><!-- springCloud --><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><!-- mysql驱动 --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>${mysql.version}</version></dependency><!--mybatis--><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>${mybatis.version}</version></dependency></dependencies></dependencyManagement><!--对所有的子项目都生效，子项目不需要再次引入了--><dependencies><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency></dependencies></project>

10、子工程pom.xml

<?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"><parent><artifactId>demo</artifactId><groupId>org.example</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>order-service</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties><!--这里的版本都是父工程统一管理--><dependencies><!--spring-boot--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--测试--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId></dependency><!--mybatis--><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId></dependency></dependencies>
</project>

四、子工程创建Spring Boot的目录结构

11、选中子工程的src文件，右键选择New——》Directory

12、Ctrl+左键，选中这四个，点击Enter，创建Spring Boot的目录结构

12、创建完成的目录结构

13、包的完整目录结构

启动主函数：OrderServiceApplication

package com.example;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
public class OrderServiceApplication {public static void main(String[] args) {SpringApplication.run(OrderServiceApplication.class, args);}
}

resources文件夹创建： application.properties、static、templates

配置文件：application.properties

server.port=8081spring.datasource.url=jdbc:mysql://localhost:3306/cloud_user?useSSL=false
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Drivermybatis.type-aliases-package=com.example.pojo
mybatis.configuration.map-underscore-to-camel-case=truelogging.level.com.example=debug

测试主函数：OrderServiceApplicationTests

package com.example;import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;@SpringBootTest
public class OrderServiceApplicationTests {@Testvoid contextLoads() {System.out.println("==========");}
}