IDEA springboot多模块项目从0到1搭建_idea新建facade模块

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前言

从一开始便在搭建好的框架中编写着代码，对整个项目的从0到1的搭建起来一直保持着好奇心。经过了几番折腾最终从0到1搭建完成，便用这第一篇博客，记录下最近如何从无到有搭建起项目的基础框架的

一、新建parent Module: hello

不勾选任何选项直接NEXT

删除src目录，除了parent Module删除src外，其他子Module都不能删除src。

创建parent Module完成

二、创建新Module: hello-dao

依然是选择Maven，然后什么都不勾选

三、参照hello-dao创建新Module: hello-facade

四、创建新Module: hello-service

这里因为连不上上面的地址，修改成了阿里的地址


这里什么也不勾选，直接Next


接着删除mvn相关东西

到这里，新Module创建完毕，准备配置各pom.xml

五、配置各pom.xml

1、配置pom.xml(hello)

<?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指明继承关系，给出被继承的父项目的具体信息-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

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

    <!-- 父模块打包类型必须为pom -->
    <packaging>pom</packaging>

    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>hello</artifactId>
    <version>1.0-SNAPSHOT</version>

    <modules>
        <module>hello-dao</module>
        <module>hello-facade</module>
        <module>hello-service</module>
    </modules>

    <!-- 版本号统一管理 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.example</groupId>
                <artifactId>hello-service</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.example</groupId>
                <artifactId>hello-facade</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.example</groupId>
                <artifactId>hello-dao</artifactId>
                <version>1.0-SNAPSHOT</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>
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2、配置pom.xml（hello-dao）

<?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>hello</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>hello-dao</artifactId>

</project>
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3、配置pom.xml（hello-facade）

<?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>hello</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>hello-facade</artifactId>

    <!-- facade层依赖dao层，添加依赖 -->
    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>hello-dao</artifactId>
        </dependency>
    </dependencies>
</project>
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4、配置pom.xml（hello-service）

<?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">
    <parent>
        <artifactId>hello</artifactId>
        <groupId>com.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <modelVersion>4.0.0</modelVersion>
    <artifactId>hello-service</artifactId>
    <name>hello-service</name>
    <description>Demo project for Spring Boot</description>


    <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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>hello-facade</artifactId>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
    </dependencies>

    <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.example.helloservice.HelloServiceApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

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六、使用测试

1、dao层创建

2、facade层创建

3、service层创建

package com.example.helloservice.impl;

import com.example.hello.dao.Student;
import com.example.hello.facade.StudyService;
import org.springframework.stereotype.Service;

@Service
public class StudyServiceImpl implements StudyService {
    @Override
    public void testStudy() {
        Student student = new Student();
        student.setName("张三");
        student.setAddress("xxx");
        student.setAge("18");
        System.out.println("---"+student.toString());
    }
}

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package com.example.helloservice.web;

import com.example.hello.facade.StudyService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class TestController {

    @Autowired
    StudyService studyService;

    @ResponseBody
    @GetMapping("/testStudy")
    public void testStudy() {
        studyService.testStudy();
    }
}

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4、启动

页面请求触发

执行成功

总结

参照过多篇文章，最后找出了一个相对更简单的方式去创建多模块的springboot，不能直接原封不动的照搬别人的，最起码还是希望稍微比他人的再好那么点点，追求优解的路不停息。

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