在外部Tomcat上启动应用程序之前的Spring Boot日志记录

Question

每当Spring Boot应用程序即将启动时，我都会尝试做一些日志记录。

目前，我有一个类，实现应用环境准备事件，我将它注册为监听器在主函数的SpringBootApplication。

应用爪哇：

@SpringBootApplication
public class Application extends SpringBootServletInitializer {
    private static final Logger appLogger = LoggerFactory.getLogger(Application.class);
    public static void main(String[] args) {
        System.out.println("INIT");
        appLogger.info("Initializing");

        SpringApplication sa = new SpringApplication();
        sa.addListeners(new InitializationLogger());
        sa.setSources(new HashSet<>(Collections.singletonList(Application.class)));
        sa.run(args);

        appLogger.info("--Application Started--");
    }
}

初始化Logger.java

public class InitializationLogger implements ApplicationListener<ApplicationEnvironmentPreparedEvent> {
    private static final Logger appLogger = LoggerFactory.getLogger(InitializationLogger.class);

    @Override
    public void onApplicationEvent(ApplicationEnvironmentPreparedEvent event) {
        System.out.println(event.getClass());
        appLogger.info(this.getClass().getName());
    }
}

问题是，每当我通过Intellij的SpringBoot运行程序或命令行作为胖罐子运行应用程序时，它都运行良好，但是当我将其部署到外部Tomcat时，这些日志不会显示出来（所有其他应用程序日志都运行良好）。

我该怎么做？

Answer 1

我该怎么做？

重写SpringBootServletilizer。配置，类似于：

@SpringBootApplication
public class Application extends SpringBootServletInitializer {
    private static final Logger appLogger = LoggerFactory.getLogger(Application.class);

    // for JAR deploy:
    public static void main(String[] args) {
        SpringApplicationBuilder builder = configureSpringBuilder(new SpringApplicationBuilder());
        builder.application().run(args);
        appLogger.info("--Application Started--");
    }

    // for WAR deploy:
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return super.configure(configureSpringBuilder(builder));
    }

    // Common:
    private static SpringApplicationBuilder configureSpringBuilder(SpringApplicationBuilder builder) {
        System.out.println("INIT");
        appLogger.info("Initializing");

        builder.application().addListeners(new InitializationLogger());
        builder.application().setSources(new HashSet<>(Collections.singletonList(Application.class)));

        return builder;
    }
}

>

类SpringBootServletilizer

要配置应用程序，请重写configure（SpringApplicationBuilder）方法（…）

为了将应用程序设置为servlet，我们使用SpringBootServletInitializer扩展了主类，并使用SpringApplicationBuilder覆盖configure方法。

因此修改应用程序入口点类（…）