开发工具：IntelliJ IDEA

代码管理：MAVEN

jdk版本：1.8

1.快速度搭建SpringBoot Maven项目

1.1在IDEA里选择file-->new project ：

1.2 选择 Sping Initializr 选择JDK 1.8，点击下一步：

注意：这里TYPE选择的是maven pom。

2.spring-boot-config项目创建完了，现在创建该项目下的子工程：

2.1 选择spring-boot-config 右键new一个Modeule，选择Maven创建工程

在这个界面Create from archetype 这边不需要选择。点击下一步填写GroupId和Artifactid信息，点击下一步：

这里填写Module name,选择Finish。

3.项目创建完成。

3.1我这里修改了一下spring-boot-config的pom文件。没有用spring-boot-starter-parent这种方式。文件内容如下：

<?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>

<!--<parent>-->

<!--<groupId>org.springframework.boot</groupId>-->

<!--<artifactId>spring-boot-starter-parent</artifactId>-->

<!--<version>2.1.3.RELEASE</version>-->

<!--<relativePath/> &lt;!&ndash; lookup parent from repository &ndash;&gt;-->

<!--</parent>-->

<groupId>com.jm.boot</groupId>

<artifactId>spring-boot-config</artifactId>

<packaging>pom</packaging>

<version>0.0.1-SNAPSHOT</version>

<modules>

<module>com-jm-web</module>

</modules>

 

<name>spring-boot-config</name>

<description>spring-boot-config 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>

<!--以下两项需要如果不配置，解析themleaft 会有问题-->

<thymeleaf.version>3.0.2.RELEASE</thymeleaf.version>

<thymeleaf-layout-dialect.version>2.0.5</thymeleaf-layout-dialect.version>

</properties>

<dependencies>

<!-- 热部署模块 -->

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-devtools</artifactId>

<optional>true</optional> <!-- 这个需要为 true 热部署才有效 -->

</dependency>

<dependency>

<groupId>org.apache.commons</groupId>

<artifactId>commons-lang3</artifactId>

</dependency>

</dependencies>

<dependencyManagement>

<dependencies>

<dependency>

<groupId>io.spring.platform</groupId>

<artifactId>platform-bom</artifactId>

<version>Cairo-SR7</version>

<type>pom</type>

<scope>import</scope>

</dependency>

<dependency>

<groupId>org.springframework.cloud</groupId>

<artifactId>spring-cloud-dependencies</artifactId>

<version>Finchley.RELEASE</version>

<type>pom</type>

<scope>import</scope>

</dependency>

</dependencies>

</dependencyManagement>

<build>

<plugins>

<plugin>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-maven-plugin</artifactId>

</plugin>

</plugins>

</build>

</project>

3.2 修改spring-boot-web 下的pom文件，增加spring-boot-starter-web 信息：

<?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>spring-boot-config</artifactId>

<groupId>com.jm.boot</groupId>

<version>0.0.1-SNAPSHOT</version>

</parent>

<modelVersion>4.0.0</modelVersion>

 

<groupId>com.jm.boot</groupId>

<artifactId>com.jm.web</artifactId>

 

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

</dependencies>

</project>

4.项目搭建完成，项目结构如下：

现在写第一个spring boot项目代码。先从最简单的开始。

4.1 创建Spring boot 项目的启动类WebApplicationService 内容如下：

@SpringBootApplication

public class WebApplicationService {

 

/**spring boot 项目启动入口,有点像java cs代码模式*/

public static void main(String[] args) {

SpringApplication.run(WebApplicationService.class,args);

}

}

启动类写好后，在这个时候启动项目会报一个错误

[2019-03-28 17:53:15.018] - 15428 信息 [restartedMain] --- com.jm.web.WebApplicationService: Starting WebApplicationService on PCOS-1604062057 with PID 15428 (D:MyIdeaProjectspring-boot-configcom-jm-webtargetclasses started by Administrator in D:MyIdeaProjectspring-boot-config)

[2019-03-28 17:53:15.039] - 15428 信息 [restartedMain] --- com.jm.web.WebApplicationService: No active profile set, falling back to default profiles: default

[2019-03-28 17:53:15.185] - 15428 信息 [restartedMain] --- org.springframework.context.annotation.AnnotationConfigApplicationContext: Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@4b1fb1ef: startup date [Thu Mar 28 17:53:15 CST 2019]; root of context hierarchy

[2019-03-28 17:53:16.365] - 15428 信息 [restartedMain] --- org.springframework.boot.devtools.autoconfigure.OptionalLiveReloadServer: LiveReload server is running on port 35729

[2019-03-28 17:53:16.392] - 15428 信息 [restartedMain] --- org.springframework.jmx.export.annotation.AnnotationMBeanExporter: Registering beans for JMX exposure on startup

[2019-03-28 17:53:16.421] - 15428 信息 [restartedMain] --- com.jm.web.WebApplicationService: Started WebApplicationService in 1.732 seconds (JVM running for 2.964)

Disconnected from the target VM, address: '127.0.0.1:43540', transport: 'socket'

这个错是启动的时候没有找到application.yml配置文件No active profile set, falling back to default profiles: default

现在新建一个application.yml，里面就配置一个端口和项目path

现在项目能够正常运行。

5. 写一个返回hello word的controller

@RestController

@RequestMapping("/hello")

public class HelloWordController {

 

@RequestMapping(value = "/get",method = RequestMethod.GET)

public String getHelloWord(){

String strString = "Hello Word!";

return strString;

}

}

运行结果