SpringBoot-Getting Started

Java EE development exists: various configurations, complex deployment, and integration of third-party libraries is not easy

The above pain points exist, so springboot was born. It has many built-in common configurations, making JavaEE development easier

And the project can run independently without additional dependencies on the web container

1. pom.xml configuration

<!--继承父项目，里面有各种库的版本号 版本依赖-->
    <parent>
        <artifactId>spring-boot-starter-parent</artifactId>
        <groupId>org.springframework.boot</groupId>
        <version>2.3.4.RELEASE</version>
    </parent>

    <!--依赖-->
    <dependencies>
        <!--Web项目依赖，已经集成了SpringMVC中很多的常用库-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--热部署,重新编译之后立刻生效 main方法会运行两次 debug模式下使用-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

    <!--插件，打包-->
    <build>
        <finalName>springboot01</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.0.RELEASE</version>
            </plugin>
        </plugins>
    </build>

 

2. Program entry

package com.mj;

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

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

3. Test controller class

package com.mj.controller;

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

@RestController
public class TestController {
    @GetMapping("/test")
    public String test() {
        return "SpringBoot run success111";
    }
}

 

4. Engineering structure:

 

 

The above is the introduction to the basics of springboot, I wish you a good time!