使用 IEDA 创建一个 Spring Boot 项目

第一步：

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第二步：

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第三步，填写 Group 和 Artifact，一直下一步直到完成创建：

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第四步，删除 src 文件夹，修改 pom 文件：

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pom 文件如下：

<?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>com.etrols</groupId>
    <artifactId>spring-boot-study-plan</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>spring-boot-study-plan</name>
    <description>spring-boot-study-plan project for Spring Boot</description>

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

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.spring.platform</groupId>
                <artifactId>platform-bom</artifactId>
                <version>Cairo-SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <!-- Import dependency management from Spring Boot -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.0.3.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <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>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

第五步，新建一个子模块：

选中项目，右键 --》New --》 Module

image.png image.png

项目结构如下：

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spring-boot-study-helloword 的pom 文件如下：

<?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>

    <artifactId>spring-boot-study-helloword</artifactId>
    <packaging>jar</packaging>

    <name>spring-boot-study-helloword</name>
    <description>spring-boot-study-helloword project for Spring Boot</description>

    <parent>
        <groupId>com.etrols</groupId>
        <artifactId>spring-boot-study-plan</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../</relativePath>
    </parent>

    <dependencies>

    </dependencies>

</project>

在父 pom 文件（spring-boot-study-plan）加入<module>spring-boot-study-helloword</module>：

<?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>com.etrols</groupId>
    <artifactId>spring-boot-study-plan</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>spring-boot-study-plan</name>
    <description>spring-boot-study-plan project for Spring Boot</description>

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

    <modules>
        <module>spring-boot-study-helloword</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.spring.platform</groupId>
                <artifactId>platform-bom</artifactId>
                <version>Cairo-SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>

            <dependency>
                <!-- Import dependency management from Spring Boot -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.0.3.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <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>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

Hello Word 程序

Spring Boot 入口 SpringBootStudyHellowordApplication：

package com.etrols;

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

@SpringBootApplication
public class SpringBootStudyHellowordApplication {

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

在包 com.etrols.helloword.controller 下新建 HelloController

package com.etrols.helloword.controller;

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

/**
 * Hello控制器
 *
 * @author Etrols
 */
@RestController
@RequestMapping("hello")
public class HelloController {

    /**
     * hello
     *
     * @return String
     */
    @GetMapping
    public String hello() {
        return "hello spring boot";
    }

}

启动项目并访问：

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如上图所示，控制台输出 hello spring boot，一个 spring boot 程序就此完成。

项目地址：https://gitee.com/Etrols/spring-boot-study-plan