1：先建立一個聚合工程parent

<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>com.yonmei</groupId>
  <artifactId>taobao-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  
  <!-- 繼承說明：這裡繼承SpringBoot提供的父工程 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.7.RELEASE</version>
        <relativePath/>
    </parent>
  
  <modules>
  	<module>taobao-interface</module>
  	<module>taobao-service</module>
  	<module>taobao-entity</module>
  	<module>taobao-web</module>
  </modules>
  
    <!-- 版本說明：這裡統一管理依賴的版本號 -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-web</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-service</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-interface</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-entity</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>

            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.42</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>
 

2：建立公共專案common

<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>
  <parent>
    <groupId>com.yonmei</groupId>
    <artifactId>taobao-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupId>com.yonmei</groupId>
  <artifactId>taobao-common</artifactId>
  <version>0.0.1-SNAPSHOT</version>
</project>
 

3：建立parent的子模組(mapper,service,interface都是一樣的，其中web的有點特殊!) 

    這裡就演示service模組的建立

<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>
  <parent>
    <groupId>com.yonmei</groupId>
    <artifactId>taobao-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>taobao-service</artifactId>
  
    <dependencies>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-interface</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
 

            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-entity</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
        </dependencies>
  
</project>

package com.gwm.service;

import org.springframework.stereotype.Service;

import com.gwm.api.UsersService;
import com.gwm.entity.Users;

@Service
public class UsersServiceImpl implements UsersService {

	@Override
	public String getUsersInfo(Users users) {
		System.out.println("springboot de ipml"+users);
		return "hellow springboot";
	}
}

4：建立web模組

<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>
  <parent>
    <groupId>com.yonmei</groupId>
    <artifactId>taobao-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>taobao-web</artifactId>
       <dependencies>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-interface</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-service</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            <dependency>
                <groupId>com.yonmei</groupId>
                <artifactId>taobao-entity</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
            
            <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        </dependencies>
</project>

4.1:  UsersController類的程式碼如下所示!

package com.gwm.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.gwm.api.UsersService;
import com.gwm.entity.Users;

@RestController
@RequestMapping("users")
public class UsersController {
	
	@Autowired
	private UsersService usersService;
	
	@RequestMapping("/getUserInfo")
	public String getString(){
		System.out.println("userInfo:="+usersService.getUsersInfo(new Users("gwm","123456")));
		return usersService.getUsersInfo(new Users("gwm","123456"));
	}
}

4.2:啟動類的程式碼如下所示

package com.gwm.controller;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/*
 * 1:可以載入一個掃描配置檔案
 * */
import org.springframework.context.annotation.ComponentScan;

@ComponentScan(basePackages={"com.gwm"}) 
@SpringBootApplication
public class StarterApplication {
	public static void main(String[] args) {
		SpringApplication.run(StarterApplication.class, args);
	}
}

4.3：上述啟動類中需要注意到的是，這裡有可能會報一個錯誤，錯誤的原因是因spring boot自動掃描沒有找到bean，所以我們可以自己加一個註解配置，自己指定需要掃描的檔案或者類，這個配置就是:@ComponentScan(basePackages={"com.gwm"})

5：需要打包web的時候就需要在含有啟動類(也就是controller類)的模組中新增一個外掛（一段程式碼）,其中打包的命令是

package，如果是打包war，就要將web層的pom的打包方式改為war，直接放到tomcat中去即可，如果是jar，那麼需要找到該jar的目錄，然後執行java -jar xx.xx.xx.jar即可!

        
        <build>
        	<finalName>first-spintboot-project</finalName>
        <plugins>
            <plugin>
                <!--該外掛主要用途：構建可執行的JAR -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
        

另外一個博主講的是IDEA建立springboot專案的流程點選開啟連結