ٹSpringBootӦ

̳springboot㹻ȨҲ㹻򵥡

һ hello world

һġHello WorldκӵĶ˵㡣Ը֣ԸѺõķʽӦ

Ҫ

1һֵIDE,ѡ IntelliJ IDEASpring ToolsVisual Studio Code Eclipse ȵȡ

2JDKڰ汾Ļ8-17ǲѡ

3ȻﻹҪmavenpomҲҪmavenmavenideaԴˡǻڽĲֽнܣҪЩ

һһµSpring BootĿ

ʹstart.spring.ioһwebĿڡdependenciesԻӡwebĻͼʾ

ɡť zip ļѹϵһļС

start.spring.ioĿSpring BootһSpring׼ӦóڲҪ̫á Spring Boot Spring Ŀеķʽ

ѡʹmavenΪߣĿpomļpomļӵ

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">   <modelVersion>4.0.0</modelVersion>   <parent>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-parent</artifactId>      <version>3.0.5</version>      <relativePath/> <!-- lookup parent from repository -->   </parent>   <groupId>com.example</groupId>   <artifactId>demo</artifactId>   <version>0.0.1-SNAPSHOT</version>   <name>demo</name>   <description>Demo project for Spring Boot</description>   <properties>      <java.version>17</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>

ڶĴ

IDE дĿ src/main/java/com/example/demo ļҵ DemoApplication.java ļ

ͨʾĶⷽעļݡԸƲճֱӼ롣

package com.example.demo;  
import org.springframework.boot.SpringApplication;  
import org.springframework.boot.autoconfigure.SpringBootApplication;  
import org.springframework.web.bind.annotation.GetMapping;  
import org.springframework.web.bind.annotation.RequestParam;  
import org.springframework.web.bind.annotation.RestController;  
  
@SpringBootApplication  
@RestController  
public class DemoApplication {  
    public static void main(String[] args) {      SpringApplication.run(DemoApplication.class, args);    }    @GetMapping("/hello")    public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {      return String.format("Hello %s!", name);    }}

Spring Boot дһ򵥵ġHello World Web д롣

ӵhello()ּڻȡһΪnameStringȻ󽫴˲еĵ"Hello"

ζнΪAmyӦǡHello Amy

@RestController ע͸ Spring˴һ˵㣬ö˵Ӧ Web Ͽá
@GetMapping(/hello) Spring ʹǵ hello() Ӧ͵ http://localhost:8080/hello ַ

@RequestParam Spring һֵڣĬʹõʡWorld

ǹг򡣴УնˣӵĿļļС

ǿͨӦó

MacOS/Linux:

COPY./gradlew bootRun

Windows:

COPY.\gradlew.bat bootRun

ӦûῴһЩ˷ǳƵ

иǣSpringӦѾʼˡ Spring Boot Ƕʽ Apache Tomcat 䵱ڼlocalhost˿ڡ8080ϵ

ڶĵַhttp://localhost:8080/hello

ӦõõһѺõĻӦ

ܽ

˼򵥣һSpringBootӦþôˣ㲻ҪļǶķ
ֻҪһ࣬ͿʵһSpringBootӦá

ҲΪʲôspringbootٹһ΢Ϊʵ̫ˡ
ȻʵʿҪõspringbootĹܺԣǽڽ½չܡ

ο

https://spring.io/quickstart