SpringBoot+Maven 多模块项目的构建、运行、打包实战

2019-11-26 09:57:41

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本篇文章主要介绍了SpringBoot+Maven 多模块项目的构建、运行、打包，分享给大家，具体如下：

项目使用的工具:

IntelliJ IDEA
JDK 1.8
apache-maven-3.3.9

项目的目录:

主项目 springboot-multi
子模块 entity、dao、service、web

一、使用IDEA创建一个SpringBoot项目 : File -> new -> Project 项目名称为springboot-multi

二、删除项目中的src目录，把pom.xml中的项目打包方式改为pom，如下：

<groupId>com.example</groupId> <artifactId>springboot-multi</artifactId> <version>0.0.1-SNAPSHOT</version> <!-- 此处改为pom --> <packaging>pom</packaging>

三、创建springboot-multi项目的子模块，在项目上右键单击，选择：new -> Module。

四、创建四个子模块后，删除子模块中 src/main/java、src/main/java下的所有文件（如果没有文件跳过此操作），只保留web子模块的SpringBoot的Application主启动类。

五、主项目pom.xml (注意<modules>标签是否指定了子模块)

<modelVersion>4.0.0</modelVersion>    <groupId>com.example</groupId>   <artifactId>springboot-multi</artifactId>   <version>0.0.1-SNAPSHOT</version>   <!-- 此处改为pom -->   <packaging>pom</packaging>    <name>springboot-multi</name>   <description>Demo project for Spring Boot</description>    <modules>     <module>web</module>     <module>service</module>     <module>dao</module>     <module>entity</module>   </modules>    <parent>     <groupId>org.springframework.boot</groupId>     <artifactId>spring-boot-starter-parent</artifactId>     <version>1.5.10.RELEASE</version>     <relativePath/> <!-- lookup parent from repository -->   </parent>    <properties>     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>     <java.version>1.8</java.version>   </properties>    <dependencies>     <dependency>       <groupId>org.springframework.boot</groupId>       <artifactId>spring-boot-starter-web</artifactId>     </dependency>   </dependencies>    <!--指定使用maven打包-->   <build>     <plugins>       <plugin>         <groupId>org.apache.maven.plugins</groupId>         <artifactId>maven-compiler-plugin</artifactId>         <version>3.1</version>         <configuration>           <source>${java.version}</source>           <target>${java.version}</target>         </configuration>       </plugin>        <plugin>         <groupId>org.apache.maven.plugins</groupId>         <artifactId>maven-surefire-plugin</artifactId>         <version>2.19.1</version>         <configuration>           <skipTests>true</skipTests>  <!--默认关掉单元测试 -->         </configuration>       </plugin>     </plugins>   </build>

六、web子模块pom.xml（依赖service、dao、entity子模块）

<modelVersion>4.0.0</modelVersion>    <groupId>com.example</groupId>   <artifactId>web</artifactId>   <version>0.0.1-SNAPSHOT</version>   <packaging>jar</packaging>    <name>web</name>   <description>Demo project for Spring Boot</description>    <parent>     <groupId>com.example</groupId>     <artifactId>springboot-multi</artifactId>     <version>0.0.1-SNAPSHOT</version>     <relativePath>../pom.xml</relativePath>   </parent>    <dependencies>     <dependency>       <groupId>com.example</groupId>       <artifactId>service</artifactId>       <version>0.0.1-SNAPSHOT</version>     </dependency>     <dependency>       <groupId>com.example</groupId>       <artifactId>dao</artifactId>       <version>0.0.1-SNAPSHOT</version>     </dependency>     <dependency>       <groupId>com.example</groupId>       <artifactId>entity</artifactId>       <version>0.0.1-SNAPSHOT</version>     </dependency>   </dependencies>    <!--spring boot打包的话需要指定一个唯一的入门-->   <build>     <plugins>       <plugin>         <groupId>org.springframework.boot</groupId>         <artifactId>spring-boot-maven-plugin</artifactId>         <configuration>           <!-- 指定该Main Class为全局的唯一入口 -->           <mainClass>com.example.WebApplication</mainClass>           <layout>ZIP</layout>         </configuration>         <executions>           <execution>             <goals>               <goal>repackage</goal><!--可以把依赖的包都打包到生成的Jar包中-->             </goals>           </execution>         </executions>       </plugin>     </plugins>   </build>

七、service子模块pom.xml(依赖 dao 、entity子模块)

<modelVersion>4.0.0</modelVersion>    <groupId>com.example</groupId>   <artifactId>service</artifactId>   <version>0.0.1-SNAPSHOT</version>   <packaging>jar</packaging>    <name>service</name>   <description>Demo project for Spring Boot</description>    <parent>     <groupId>com.example</groupId>     <artifactId>springboot-multi</artifactId>     <version>0.0.1-SNAPSHOT</version>     <relativePath>../pom.xml</relativePath>   </parent>    <dependencies>     <dependency>       <groupId>com.example</groupId>       <artifactId>dao</artifactId>       <version>0.0.1-SNAPSHOT</version>     </dependency>     <dependency>       <groupId>com.example</groupId>       <artifactId>entity</artifactId>       <version>0.0.1-SNAPSHOT</version>     </dependency>   </dependencies>

八、dao子模块pom.xml （依赖entity子模块）

<modelVersion>4.0.0</modelVersion>  <groupId>com.example</groupId> <artifactId>dao</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging>  <name>dao</name> <description>Demo project for Spring Boot</description>  <parent>   <groupId>com.example</groupId>   <artifactId>springboot-multi</artifactId>   <version>0.0.1-SNAPSHOT</version>   <relativePath>../pom.xml</relativePath> </parent>  <dependencies>   <dependency>     <groupId>com.example</groupId>     <artifactId>entity</artifactId>     <version>0.0.1-SNAPSHOT</version>   </dependency> </dependencies>

九、entity子模块

<modelVersion>4.0.0</modelVersion>  <groupId>com.example</groupId> <artifactId>entity</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging>  <name>entity</name> <description>Demo project for Spring Boot</description>    <parent>     <groupId>com.example</groupId>     <artifactId>springboot-multi</artifactId>     <version>0.0.1-SNAPSHOT</version>     <relativePath>../pom.xml</relativePath>   </parent>

十、pom.xml文件中需要注意的就是：

主项目的modules标签指定的子模块是否正确
子模块之间的依赖
子模块的parent标签

十一、web子模块的Application启动类:

@RestController @SpringBootApplication public class WebApplication {    public static void main(String[] args) {     SpringApplication.run(WebApplication.class, args);   }    @RequestMapping(value = "/test",method = RequestMethod.GET)   public String test(){     return "test success";   } }

十二、执行main方法启动项目，访问localhost:8080/test，出现如下页面表示项目搭建成功：