Change Tomcat Port in a Spring Boot application
By default Spring Boot uses Tomcat as the container and runs the server on 8080 port. However you can change the Tomcat port in following ways:
1) Change port by specifying the port in application.properties or application.yml file using server.port property.
application.properties file
server.port=8090
application.yml file
server:
port : 8090 2) Change port using command line argument
java -Dserver.port=8090 -jar yourapplication.jar
3) Change port by implementing EmbeddedServletContainerCustomizer interface
package com.example.demo;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
import org.springframework.stereotype.Component;
@Component
public class WebServerFactoryCustomizerImpl implements
WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
@Override
public void customize(ConfigurableServletWebServerFactory server) {
server.setPort(8090); // change tomcat port
}
} References :
Spring Boot Docs how to change the http port