SpringBoot+Maven多模块项目(17)

工程结构：
    父模块 multimodule-parent：
        子模块 multimodule-core
        子模块 multimodule-web（web，唯一有启动类的模块）
    关系：
        multimodule-web依赖 multimodule-core （需要把multimodule-core 包打到multimodule-web中）

一.创建Maven多模块项目

1.创建multimodule-parent模块

1.1创建父模块,用于管理各个模块

接下来，把src整个删掉，父工程不需要，因为父工程你就当它只有一个外壳就完了

 pom.xml

<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>
  <groupId>com.example.multimodule</groupId>
  <artifactId>multimodule-parent</artifactId>
  <version>1.0.0</version>
  <packaging>pom</packaging>
  <name>multimodule</name>
  <description>多模块项目父模块</description>
   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>2.2.3.RELEASE</version>
  </parent>
  <dependencies>
    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
	 <dependency>
	    <groupId>commons-io</groupId>
	    <artifactId>commons-io</artifactId>
	    <version>2.6</version>
	</dependency>
  </dependencies>
  <modules>
  	<module>multimodule-core</module>
  	<module>multimodule-web</module>
  </modules>
</project>

1.2创建子模块multimodule-core

pom.xml

<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.example.multimodule</groupId>
    <artifactId>multimodule-parent</artifactId>
    <version>1.0.0</version>
  </parent>
  <artifactId>multimodule-core</artifactId>
</project>

1.3 创建子模块multimodule-web

pom.xml

<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.example.multimodule</groupId>
    <artifactId>multimodule-parent</artifactId>
    <version>1.0.0</version>
  </parent>
  <artifactId>multimodule-web</artifactId>
  <packaging>jar</packaging>
  <name>multimodule-web</name>
  <description>multimodule-web依赖 multimodule-core </description>
  
    <dependencies>
     <dependency>
	       <groupId>org.springframework.boot</groupId>
	       <artifactId>spring-boot-starter-web</artifactId>
     </dependency>
      <dependency>
	       <groupId>com.example.multimodule</groupId>
	       <artifactId>multimodule-core</artifactId>
	       <version>1.0.0</version>
     </dependency>
  </dependencies>
  
   <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.multimodule.web.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>
</project>

二.代码测试

2.1multimodule-core模块下新建CoreTest类

package com.example.multimodule.core;

public class CoreTest {

	public String show() {
		return "这是一个子模块core";
	}
}　

2.2multimodule-web模块下新建WebApplication类

package com.example.multimodule.web;

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

@SpringBootApplication
public class WebApplication {

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

}　　

2.3multimodule-web模块下新建WebTestController类

package com.example.multimodule.web;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import com.example.multimodule.core.CoreTest;

@RestController
public class WebTestController {

	@GetMapping("/show")
	public String test() {
		CoreTest c=new CoreTest();
		return c.show();
	}
}　

三.打包运行测试

3.1Maven install

   右键multimodule-core项目，选择Maven install

 复制打包成功的multimodule-web-1.0.0.jar，把它拷贝到一个目录

3.2 java -jar 运行jar包

 访问http://localhost:8080/show 地址(默认不带项目名)，返回结果如下，证明最后的multimodule-web-1.0.0.jar包把要依赖的multimodule-core包，也打进去，并且整个springboot 项目打包成功.