Spring Boot / Tomcat on AWS Elastic Beanstalk showing only 404 pages

Question

I have a Spring boot application that works fine on my localhost under Tomcat. When I pack it as a WAR and deploy to Elastic Beanstalk, I get only 404 pages. I tried a lot of different settings to try to get it to work, but I'm at a loss.

I configured the packaging as WAR, and IntelliJ generates an artifact:

<groupId>com.ideaEngine</groupId>
<artifactId>app_deployment</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <start-class>com.xxxxxxxx.WebappApplication</start-class>
    <java.version>1.8</java.version>
</properties>

I also included Tomcat as

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

The elastic Beanstalk server is a 64-bit Amazon Linux 2016.03 v2.2.0, working with Tomcat 8 Java 8

Local JVM is jdk1.8.0_71.jdk

Application Object:

@SpringBootApplication
public class WebappApplication {

    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(WebappApplication.class);
    }

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(WebappApplication.class, args);
        System.out.println("Running............");
    }
}

I have a control controller that I use to make sure everything works:

@RestController
public class HelloController {

    @RequestMapping("/")
    public String index() {
        return "Greetings from Spring Boot!";
    }
}

... and it generates 404 errors.

.war Webapp.war ROOT.war, .com//ROOT//Webapp/

404.

, :

Deployment of web application directory /var/lib/tomcat8/webapps/ROOT has finished in 2,143 ms

/var/lib/tomcat 8/webapps/ROOT .

META-INF/MANIFEST.MF : -: 1.0 : xxxxxxxxxxx : 0.0.1-SNAPSHOT : cdc --: com.xxxxxxxxx : IntelliJ IDEA Build-Jdk: 1.8.0_71 : com.xxxxxxxxx.WebappApplication

""

Environment health has transitioned from Info to Ok. Application update completed 58 seconds ago and took 15 seconds.

, AWS, .

, .

, ?

!

Answer 1

, . mkyong https://www.mkyong.com/spring-boot/spring-boot-deploy-war-file-to-tomcat/ , , .

, , WebappApplication SpringBootServletInitializer. , SpringBootServletInitializer.

@SpringBootApplication
public class WebappApplication extends SpringBootServletInitializer{

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(WebappApplication.class);
    }

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(WebappApplication.class, args);
        System.out.println("Running............");
    }
}

. !