详解SpringBoot基础之banner玩法解析

${AnsiColor.BRIGHT_YELLOW}
////////////////////////////////////////////////////////////////////
//             _ooOoo_                //
//             o8888888o               //
//             88" . "88               //
//             (| ^_^ |)               //
//             O\ = /O               //
//           ____/`---'\____              //
//          .' \\|   |// `.             //
//          / \\||| : |||// \            //
//         / _||||| -:- |||||- \            //
//         |  | \\\ - /// |  |            //
//         | \_| ''\---/'' |  |            //
//         \ .-\__ `-` ___/-. /            //
//        ___`. .' /--.--\ `. . ___           //
//       ."" '< `.___\_<|>_/___.' >'"".         //
//      | | : `- \`.;`\ _ /`;.`/ - ` : | |         //
//      \ \ `-.  \_ __\ /__ _/  .-` / /         //
//   ========`-.____`-.___\_____/___.-`____.-'========     //
//              `=---='               //
//   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    //
//      佛祖保佑    永不宕机   永无BUG         //
////////////////////////////////////////////////////////////////////

@FunctionalInterface
public interface Banner {
  // 打印banner
  void printBanner(Environment environment, Class<?> sourceClass, PrintStream out);
  enum Mode {
    // 关闭
    OFF,
    // 控制台
    CONSOLE,
    // 日志文件
    LOG
  }
}

class SpringBootBanner implements Banner {
  private static final String[] BANNER = { "",
      " .  ____     _      __ _ _",
      " /\\\\ / ___'_ __ _ _(_)_ __ __ _ \\ \\ \\ \\",
      "( ( )\\___ | '_ | '_| | '_ \\/ _` | \\ \\ \\ \\",
      " \\\\/ ___)| |_)| | | | | || (_| | ) ) ) )",
      " ' |____| .__|_| |_|_| |_\\__, | / / / /",
      " =========|_|==============|___/=/_/_/_/" };
  private static final String SPRING_BOOT = " :: Spring Boot :: ";
  private static final int STRAP_LINE_SIZE = 42;
  @Override
  public void printBanner(Environment environment, Class<?> sourceClass,
      PrintStream printStream) {
    for (String line : BANNER) {
      printStream.println(line);
    }
    String version = SpringBootVersion.getVersion();
    version = (version != null) ? " (v" + version + ")" : "";
    StringBuilder padding = new StringBuilder();
    while (padding.length() < STRAP_LINE_SIZE
        - (version.length() + SPRING_BOOT.length())) {
      padding.append(" ");
    }
    printStream.println(AnsiOutput.toString(AnsiColor.GREEN, SPRING_BOOT,
        AnsiColor.DEFAULT, padding.toString(), AnsiStyle.FAINT, version));
    printStream.println();
  }
}

public static void main(String[] args) {
  SpringApplication app = new SpringApplication(SpringbootBannerApplication.class);
  app.setBannerMode(Banner.Mode.CONSOLE);
  Banner banner = new ImageBanner(new ClassPathResource("banner1.png"));
  app.setBanner(banner);
  app.run(args);
}

spring.banner.location=classpath:banner1.png
spring.banner.image.margin=2
spring.banner.image.height=76
spring.banner.charset=UTF-8
spring.banner.image.invert=false
spring.banner.image.location=banner1.png
spring.main.banner-mode=console
spring.main.show-banner=true