Question

每当Spring Boot应用程序即将启动时，我都会尝试进行一些日志记录。

目前我有一个实现ApplicationEnvironmentPreparedEvent的类，我在SpringBootApplication的主函数中将其注册为监听器。

Application.java：

@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--");
    }
}

InitializationLogger.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jar运行应用程序时，它运行得很好，但是当我将它部署到外部Tomcat时，这些日志不会显示（所有其他应用程序）日志工作正常）。

我该怎么做？

Answer 1

我该怎么做？

覆盖SpringBootServletInitializer.configure，例如：

@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;
    }
}

参考文献：

Class SpringBootServletInitializer

配置应用程序要么覆盖configure（SpringApplicationBuilder）方法（...）
Tutorial: Use Spring Boot to Build and Deploy WAR Files - Setting Up a Servlet

要将应用程序设置为servlet，我们使用SpringBootServletInitializer扩展主类，并使用SpringApplicationBuilder覆盖configure方法。
Deploying Spring Boot Applications - What about the Java EE Application Server?

因此修改您的应用程序入口点类（...）

应用程序在外部Tomcat

1 个答案:

参考文献：