HelloController.java

 

 HelloController.java

package com.example.demo.Controller;

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

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

@RestController // 该注解为组合注解，等同于Spring中@Controller+@ResponseBody注解

public class HelloController {

@GetMapping("/hello") // 该注解等同于Spring框架中@RequestMapping(RequestMethod.GET)注解

public String hello(){

return "你好，Spring Boot";

}

}

 DemoApplication.java

 

 

 

package com.example.demo;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class DemoApplication {

public static void main(String[] args) {

SpringApplication.run(DemoApplication.class, args);

}

}

 

 

 DemoApplicationTests.java

package com.example.demo;

import org.junit.jupiter.api.Test;

import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest

class DemoApplicationTests {

@Test

void contextLoads() {

}

}

 

pom.xml

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">

4.0.0

org.springframework.boot

spring-boot-starter-parent

2.6.6

com.example

demo

0.0.1-SNAPSHOT

demo

Demo project for Spring Boot

1.8

org.springframework.boot

spring-boot-starter-web

org.springframework.boot

spring-boot-starter-test

test

org.springframework.boot

spring-boot-maven-plugin

 运行

 

 控制台输出消息

 

 

在浏览器地址栏输入

http://localhost:8080/hello

 

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