Java & Maven & Spring & Spring Boot

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("\n----------------------------------------------------------\n\t" +
            "Application '{}' is running! Access URLs:\n\t" +
            "Local: \t\t{}://localhost:{}\n\t" +
            "External: \t{}://{}:{}\n\t" +
            "Profile(s): \t{}\n----------------------------------------------------------",
        env.getProperty("spring.application.name"),
        protocol,
        env.getProperty("server.port"),
        protocol,
        hostAddress,
        env.getProperty("server.port"),
        env.getActiveProfiles());
  }

}

Spring Framework 5

https://spring.io/

https://www.baeldung.com/java-decorator-pattern

Spring 5 & Spring Boot 2

refs

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