Spring boot: Unable to start embedded Tomcat servlet container

Question

I\'m new to Spring Boot and having with error while running my application. I\'m following a tutorial and I believe I\'m having proper parent and dependencies with POM, plea

Answer 1

You need to Tomcat Dependency and also extend your Application Class from extends SpringBootServletInitializer

@SpringBootApplication  
public class App extend SpringBootServletInitializer
{
    public static void main( String[] args )
    {
        SpringApplication.run(App.class, "hello");
    }
}

Answer 2

For me, I just had to put a -X flag with mvn. Look at the debug log; there was an issue with Spring while locating the .properties file.

Answer 3

If you are running on a linux environment, basically your app does not have rights for the default port.

Try 8181 by giving the following option on VM.

-Dserver.port=8181

Answer 4

Try to change the port number in application.yaml (or application.properties) to something else.

Answer 5

For me, the problem was in XML migrations. I deleted all tables and sequences and it works on next bootRun

Answer 6

You need to add the tomcat dependency in your pom

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