xgqfrms™, xgqfrms® : xgqfrms's offical website of GitHub!

Java & Maven & Spring & Spring Boot

Spring Boot

sb

https://start.spring.io/

Spring 4

https://s3.amazonaws.com/baeldung.com/Building+a+REST+API+with+Spring.pdf

Maven

https://maven.apache.org/guides/index.html

https://maven.apache.org/download.cgi

https://maven.apache.org/install.html

https://maven.apache.org/guides/getting-started/windows-prerequisites.html

Binary zip archive | apache-maven-3.6.1-bin.zip

# JAVA_HOME
$ echo %JAVA_HOME% 

$ mvn -v

Java & decorator design pattern

@Override

@ decorator

Application.java



package com.xgqfrms.tag;
 
import com.xgqfrms.tag.config.ApplicationProperties;
import java.net.InetAddress;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.core.env.Environment;
 
@Slf4j
@SpringBootApplication
@EnableConfigurationProperties(ApplicationProperties.class)
public class Application {
 
  private final Environment env;
 
  public Application(Environment env) {
    this.env = env;
  }
 
  public static void main(String[] args) {
 
    SpringApplication app = new SpringApplication(Application.class);
    Environment env = app.run(args).getEnvironment();
    String protocol = "http";
    if (env.getProperty("server.ssl.key-store") != null) {
      protocol = "https";
    }
    String hostAddress = "localhost";
    try {
      hostAddress = InetAddress.getLocalHost().getHostAddress();
    } catch (Exception e) {
      log.warn("The host name could not be determined, using `localhost` as fallback");
    }
    log.info("
----------------------------------------------------------
	" +
            "Application '{}' is running! Access URLs:
	" +
            "Local: 		{}://localhost:{}
	" +
            "External: 	{}://{}:{}
	" +
            "Profile(s): 	{}
----------------------------------------------------------",
        env.getProperty("spring.application.name"),
        protocol,
        env.getProperty("server.port"),
        protocol,
        hostAddress,
        env.getProperty("server.port"),
        env.getActiveProfiles());
  }
 
}