5分鐘搭建最簡單springboot-demo

這個年代不學習spring boot已經落伍了，今天搭建了一下springboot demo,記錄一下！

1. 本地搭建與測試

1.1 構建項目

IDEA 構建一個普通maven工程

1.2 配置pom.xml

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.2.RELEASE</version>
        <relativePath/>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </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>

1.3 創建Application啓動類

package com.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan("com.demo")
public class SpringBootdemoApplication {
 
	public static void main(String[] args) {
	    SpringApplication.run(SpringBootdemoApplication.class, args);
	}
}

1.4 創建一個簡單的controller

package com.demo.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/app")
public class TestController {

    @RequestMapping("/test")
    @ResponseBody
    public String testDemo() {
        return "Hello World!";
    }
}

1.5 運行Application啓動類

springboot 已經啓動內嵌的是tomcat 默認的端口是8080，如下所示

啓動成功後即可在瀏覽器中訪問http://127.0.0.1:8080/app/test

2 部署spring boot應用

在當前應用的目錄下運行mvn package進行打包，打包之後的文件在工程目錄的target目錄會生成對應的jar文件，將jar拷貝到服務器下用java的原生命令執行生成的jar文件

java -jar springboot-demo-1.0-SNAPSHOT.jar