Hands-On Full Stack Development with Spring Boot 2 and React - Second Edition

Logs and problem solving

Spring Boot starter packages provide a logback that we can use for logging without any configuration. The following sample code shows how you can use logging:

import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplicationpublic class CardatabaseApplication {  private static final Logger logger = LoggerFactory.getLogger(CardatabaseApplication.class);  public static void main(String[] args) {    SpringApplication.run(CardatabaseApplication.class, args);    logger.info("Hello Spring Boot");  }}

Logging messages can be seen in the console after you run the project:

There are seven different levels ...