springboot系列教程（一）——第一个springboot程序

旧城等待， 2022-06-03 07:07 238阅读 0赞

## 第一个springboot程序 ##

> springboot可以使我们快速开发一个web项目。本系列例子采用intellij idea开发  
> 打开Idea-> new Project ->Spring Initializr ->填写group、artifact ->钩上web(开启web功能）->点下一步就行了。

**自动生成pom.xml**

<?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.example</groupId>
        <artifactId>study1</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>study1</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.9.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <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>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

**新建controller**

package com.example.demo.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /** * @author :小虎 * @date :2017/12/21 */
    
    @RestController
    public class HomeController { 
    
        @RequestMapping("/")
        public String home(){
            return "hello world";
        }
    }

直接运行Study1Application这个java类

@SpringBootApplication
    public class Study1Application {
    
        public static void main(String[] args) {
            SpringApplication.run(Study1Application.class, args);
        }
    }

**启动springboot 方式**

cd到项目主目录:
    mvn clean  
    mvn package 
    
    mvn spring-boot: run   启动
    cd 到target目录， java -jar 项目.jar

访问地址[http://localhost:8080/][http_localhost_8080]  
![这里写图片描述][SouthEast]

## 项目源码 ##

> [https://github.com/itmybaby/springboot/tree/master/study1][https_github.com_itmybaby_springboot_tree_master_study1]

[http_localhost_8080]: http://localhost:8080/
[SouthEast]: /images/20220603/58b987df3e1e4cfb9e52a175cb40fb3e.png
[https_github.com_itmybaby_springboot_tree_master_study1]: https://github.com/itmybaby/springboot/tree/master/study1