How Can I Change the Default Port of My Spring Boot Application?

Customizing Spring Boot Application Port

Spring Boot applications typically listen on port 8080 by default. However, you may need to configure a different port for various reasons. Here are the steps to do so:

System Property Configuration

You can configure the server port using the -Dserver.port=PORT_NUMBER system property:

java -jar my-app.jar -Dserver.port=8090

Application Properties/YAML Configuration

Alternatively, you can create an application.properties file in /src/main/resources/ and add the following:

server.port=8090

For a random port, set the value to 0:

server.port=0

For YAML configuration, create an application.yml file in /src/main/resources/ and include:

server:
  port: 8090

By using these methods, you can configure the port listened on by your Spring Boot application to the desired value.

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