OKdevTV

Spring Boot

• https://github.com/spring-projects/spring-boot

Goals

• 매우 빠른 스프링 개발 가능
• 기본도 충실하지만, 요구사항 변화에 빨리 대응
• 다양한 비기능 특징 제공(임베디드 서버, 보안, 메트릭, 헬스 체크, 외부 설정)

Simple Example

• https://start.spring.io
• spring boot 기본 앱 생성
• Example.java

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);
  }
}

• pom.xml

<?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>2.0.0.BUILD-SNAPSHOT</version>
    </parent>

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

    <!-- (you don't need this if you are using a .RELEASE version) -->
    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
            <snapshots><enabled>true</enabled></snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </pluginRepository>
    </pluginRepositories>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Executable JAR,WAR

• 리눅스에서 단독 실행 가능한 *.jar, *.war
• 윈도우는 java -jar 필요
• pom.xml

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <version>1.5.8.RELEASE</version>
    <configuration>
        <executable>true</executable>
    </configuration>
</plugin>

• 실행

./spring-boot-jsp.jar

Spring Boot as a Service

• Executable JAR 필요
• 심볼릭 링크 이용
• sudo service myapp start, stop, restart 가능

chmod 755 /path/to/myspringboot.jar
sudo ln -s /path/to/myspringboot.jar /etc/init.d/myapp

• run

sudo service myapp start
curl localhost:8080

• stop

sudo service myapp stop
sudo rm /etc/init.d/myapp

• ref : https://stackoverflow.com/questions/21503883/spring-boot-application-as-a-service

Migration to Spring Boot

• http://www.baeldung.com/spring-boot-migration

• pom.xml

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.6.RELEASE</version>
</parent>

related

• Spring Boot 2

What Else?