Spring boot初始

1 创建pom.xml

　　parent：org.springframework.boot  包含启动的依赖

添加依赖，如 spring-boot-starter-web

mvn dependency:tree 查看依赖

mvn spring-boot:run  启动服务

build添加：spring-boot-maven-plugin依赖

mvn package：打包，生成可运行jar

命令启动 java -jar target/myproject-0.0.1-SNAPSHOT.jar

main方法为启动入口

@RestController表示接受请求，并返回一个字符串，字符串就是response

@EnableAutoConfiguration表示自动推测

@RequestMapping作用在方法上，指定请求的路由

 

 

<?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>myproject</artifactId>
	<version>0.0.1-SNAPSHOT</version>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.3.RELEASE</version>
	</parent>

	<!-- Additional lines to be added here... -->
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

　　

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.web.bind.annotation.*;

@RestController
@EnableAutoConfiguration
public class Example {
	@RequestMapping("/")
	String home() {
		return "Hello World! ";
	}

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

}