1.准备工具
jdk1.8,Apache-maven3.5.2(都需要配置环境变量,可百度),Intellij IDEA
2.目录结构
3.编码部分
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.atguigu</groupId> <artifactId>spring-boot-01-helloworld</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.9.RELEASE</version> </parent> <!--这是 web 启动器--> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!--这个插件,将应用打包成一个可执行的 jar 包,直接在 dos 窗口使用命令就能运行--> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
HelloController类
@Controller public class HelloController { @ResponseBody @RequestMapping("/hello") public String hello(){ return "Hello World!"; } }
HelloWorldApplication类
/** * SpringBootApplication 用来标注一个主程序类,说明这是一个Spring Boot */ @SpringBootApplication public class HelloWorldApplication { public static void main(String[] args) { //Spring 应用启动 SpringApplication.run(HelloWorldApplication.class,args); } }