IntelliJ IDEA创建Spring Boot

初玩 spring boot，记录创建过程

1.File -- New -- Project

 

2. 选择 Spring Initializr，点击 Next

3.等待加载完成，图中圈的地方可以自定义修改，点Next

4. 选择Web  -- Spring Web ，点击 Next

5.项目名和工程路径，点击 Finish

6.等待加载完，目录如下：

pom文件：

<?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 https://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>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

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

</project>

7.新建 controller 目录，在此目录下新建   HelloController 文件，内容如下：

package com.example.demo.controller;


import org.springframework.web.bind.annotation.*;


/**
 * created by why
 * @date 20200531
 *
 */


@RestController
public class HelloController {

    @GetMapping("/hello")
    public String say(){
        return "Hello Spring boot";
    }

    @GetMapping("add1")
    public String h1(){
        return "这add1";
    }
}

8.运行 DemoApplication，如图，打开链接 http://127.0.0.1:8080/hello

 

9.启动后的端口 是 8080，可以在 application.properties 文件中 添加如图，修改启动端口

#端口号
server.port=8081

参考：https://www.cnblogs.com/xichji/p/11211514.html