HI,

By default Spring Boot application runs on the embedded tomcat server and comes with the default configuration. By default spring boot web application runs on 8080 port.

The easiest way is to change the default configuration and update it to instruct Spring boot to run application on some other port say 8084.

If you are using application.properties in your application then add the following configuration:

server.port=8084

If you are using application.yml file in your project then add following in the application.xml file:

server:
  port : 8084

Above change will instruct Spring Boot to run the web application on port number 8084. This way you can change spring boot default port 8080 to new port 8084.

Hope this helps you.

Thanks

HI,

You can also change the configuration grammatically. Here is simple example of configuration:

@SpringBootApplication
public class MyWebApplication {
    public static void main(String[] args) {
        SpringApplication app = new SpringApplication(MyWebApplication.class);
        app.setDefaultProperties(Collections
          .singletonMap("server.port", "8084"));
        app.run(args);
    }
}

Above example will instruct the application to run on 8084 port.

Thanks

Hi,

You will find more tutorials at:

• Spring Boot tutorials

Thanks

Hi

There are options to change the port number of tomcat from command line also. While running the jar file with java -jar command you can provide configuration to run Spring web application on other port also.

Here is example command:

java -jar myapp.jar --server.port=8083

or

java -jar -Dserver.port=8083 myapp.jar

Hope this helps you.

Thanks