DZone
Thanks for visiting DZone today,
Edit Profile
  • Manage Email Subscriptions
  • How to Post to DZone
  • Article Submission Guidelines
Sign Out View Profile
  • Post an Article
  • Manage My Drafts
Over 2 million developers have joined DZone.
Log In / Join
Refcards Trend Reports
Events Video Library
Refcards
Trend Reports

Events

View Events Video Library

Zones

Culture and Methodologies Agile Career Development Methodologies Team Management
Data Engineering AI/ML Big Data Data Databases IoT
Software Design and Architecture Cloud Architecture Containers Integration Microservices Performance Security
Coding Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
Culture and Methodologies
Agile Career Development Methodologies Team Management
Data Engineering
AI/ML Big Data Data Databases IoT
Software Design and Architecture
Cloud Architecture Containers Integration Microservices Performance Security
Coding
Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance
Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks

Generative AI has transformed nearly every industry. How can you leverage GenAI to improve your productivity and efficiency?

SBOMs are essential to circumventing software supply chain attacks, and they provide visibility into various software components.

Related

  • Auto Logging in Class and Method Level Using Custom Annotations in Spring Boot App
  • Spring Boot Pet Clinic App: A Performance Study
  • Improving Backend Performance Part 1/3: Lazy Loading in Vaadin Apps
  • Advanced Kubernetes Setup for Spring Boot App With PostgreSQL DB

Trending

  • From Drift to Discipline: Operating Model for Regaining Enterprise Cloud Control
  • Modernizing Apache Spark Applications With GenAI: Migrating From Java to Scala
  • How Developers Are Driving Supply Chain Innovation With Modern Tech
  • Debunking LLM Intelligence: What's Really Happening Under the Hood?
  1. DZone
  2. Coding
  3. Frameworks
  4. Changing the Default Port of Spring Boot Apps [Snippets]

Changing the Default Port of Spring Boot Apps [Snippets]

Let's take a look at three different approaches you can take to defining your Spring Boot app's default Tomcat port, as well as the impacts of those approaches.

By 
Hussein Terek user avatar
Hussein Terek
·
Mar. 19, 18 · Code Snippet
Likes (14)
Comment
Save
Tweet
Share
186.5K Views

Join the DZone community and get the full member experience.

Join For Free

By default, Spring Boot applications run on an embedded Tomcat via port 8080. In order to change the default port, you just need to modify the server.port attribute, which is automatically read at runtime by Spring Boot applications.

In this tutorial, we provide a few common ways of modifying the server.port attribute.

application.properties

Create an application.properties file under src/main/resources and define the server.port attribute inside it:

server.port=9090


EmbeddedServletContainerCustomizer

You can customize the properties of the default servlet container by implementing the EmbeddedServletContainerCustomizer interface as follows:

package com.programmer.gate;

import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;

public class CustomContainer implements EmbeddedServletContainerCustomizer {
    @Override
    public void customize(ConfigurableEmbeddedServletContainer container) {
        container.setPort(9090);
    }
}


The port defined inside the CustomContainer always overrides the value defined inside application.properties.

Command Line

The third way is to set the port explicitly when starting up the application through the command line. You can do this in two different ways:

  • java -Dserver.port=9090 -jar executable.jar
  • java -jar executable.jar –server.port=9090

The port defined using this way overrides any other ports defined through other ways.

Spring Framework Spring Boot app

Published at DZone with permission of Hussein Terek, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

Related

  • Auto Logging in Class and Method Level Using Custom Annotations in Spring Boot App
  • Spring Boot Pet Clinic App: A Performance Study
  • Improving Backend Performance Part 1/3: Lazy Loading in Vaadin Apps
  • Advanced Kubernetes Setup for Spring Boot App With PostgreSQL DB

Partner Resources

×

Comments

The likes didn't load as expected. Please refresh the page and try again.

ABOUT US

  • About DZone
  • Support and feedback
  • Community research
  • Sitemap

ADVERTISE

  • Advertise with DZone

CONTRIBUTE ON DZONE

  • Article Submission Guidelines
  • Become a Contributor
  • Core Program
  • Visit the Writers' Zone

LEGAL

  • Terms of Service
  • Privacy Policy

CONTACT US

  • 3343 Perimeter Hill Drive
  • Suite 100
  • Nashville, TN 37211
  • [email protected]

Let's be friends: