关于java:基于IDEA手动创建SpringBoot项目

创立Maven我的项目

指定项目名称

编辑POM.xml配置文件

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.jt</groupId>
    <artifactId>springboot_demo2</artifactId>
    <version>1.0-SNAPSHOT</version>

    <!--1.对立定义父级我的项目-->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <java.version>1.8</java.version>
        <!--跳过测试类加载-->
        <skipTests>true</skipTests>
    </properties>

    <!--2.引入第三方依赖-->
    <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>


    <!--3.增加插件-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

编辑主启动类

@SpringBootApplication  //标识我是一个SpringBoot的我的项目
public class SpringBootRun {

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

}

编辑测试Controller

package com.jt.controller;

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

@RestController
public class HelloController {

    /**
     * 用户通过/hello的门路获取 敌对的提示信息.
     */
    @RequestMapping("/hello")
    public String hello(){

        return "搭建环境真艰难,为什么就我的不行呢? 我昨天干了什么呢!!!!!";
    }
}