Reputation: 141

Spring Boot: Change Port for Web Application

I am currently trying to create a web application with Spring Boot. I need to host my application to localhost:8081. How do I change the port?

Upvotes: 11

Answers (8)

janitha dilshan hendhavitharan

Reputation: 11

go to your application.properties file and type server.port=8081 see this image

Upvotes: 1

Leon Kofman

Reputation: 1

In application.properties you can define port that will be received from environment variable like:

server.port=${PORT:8200}

Upvotes: 0

Ashutosh Srivastav

Reputation: 669

If you're using STS, you can do it following below steps:

Go to Boot Dashboard view, you'll see your Boot app, say myApp1

Right click and click on Open Config. This should open Run Time Configuration section.
Go to Argument tab and add parameter server.port=, like in the example below, a custom port 9091 is added.

Start the app and if everything is good, you'll see the desired port on Boot dashboard.

Upvotes: 1

Satish Kr

Reputation: 628

In your application.properties file, just add one line

server.port = 8080

And for more configurations you can refer Spring Boot documentation on port

Upvotes: 3

Jet_C

Reputation: 662

By default spring boot uses port 8080, BUT you can change the port just by adding the following code line in your main() like this:

System.getProperties().put( "server.port", *YOUR_PORT_NUMBER_GOES_HERE* );

e.g

@SpringBootApplication
public class MyClass {
public static void main(String[] args) {
    System.getProperties().put( "server.port", 8181 );  //8181 port is set here
    SpringApplication.run(MyClass.class, args);
}

You can configure it in your application.properties file like so:

server.port=8181

If you DON'T have an application.properties file in your spring-boot application, you can go ahead and create one. Right-click on the src/java/resources folder and go to New-> Other-> General and choose 'File' then name as: application.properties

Any other configurations you might need are listed here https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html. These properties are also configured in the application.properties file.

Upvotes: 12

Lingani

Reputation: 201

If you are using the embedded tomcat server, you can configure the EmbeddedServletContainerFactory bean yourself in your Application class annotated with @SpringBootApplication.

This will give you options to customize your tomcat server, example configuration

@Bean
public EmbeddedServletContainerFactory servletContainer() {
    TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
    factory.setPort(9000);
    factory.setSessionTimeout(10, TimeUnit.MINUTES);
    factory.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/notfound.html"));
    return factory;
}

You could also do the same for Jetty, using the JettyEmbeddedServletContainerFactory bean, or for Undertow using the UndertowEmbeddedServletContainerFactory .

Official documentation found here : http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/reference/htmlsingle/

Upvotes: 2