創建Spring Boot項目

創建Spring Boot項目Hello World項目方式有兩種：
一：手動創建Maven項目，手動引入相關依賴。
二：通過Spring Initializr快速創建。

手動創建

創建Maven項目
引入相關依賴
pom:

<?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.springboot.helloworld</groupId>
    <artifactId>helloworld</artifactId>
    <version>1.0-SNAPSHOT</version>

    <!--java 版本-->
    <properties>
        <java.version>1.8</java.version>
    </properties>

    <!-- Spring Boot默認繼承的版本仲裁中心依賴 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
    </parent>


    <!-- 項目依賴 -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

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

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


    <!-- maven 插件：將項目打成Jar包 -->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

創建Spring Boot主程序入口類

package com;

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

/**
 * @AUTHOR:BSNPC1O
 * @DATE:05/21/2019
 */
@SpringBootApplication
public class HelloWorldMain {

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

創建Hello World Controller類

package com.controller;

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

/**
 * @AUTHOR:BSNPC1O
 * @DATE:05/21/2019
 */
@RestController
public class HelloController {

    @RequestMapping("/sayHello")
    public String sayHello(){
        return "Hello World！";
    }
}

創建Spring Boot測試主程序入口類

package com;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

/**
 * @AUTHOR:BSNPC1O
 * @DATE:05/21/2019
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class HelloWorldMainTest {

	// 必須至少得有一個test方法，否則無法打包
    @Test
    public viod test(){
        
    }
}