Prerequisites ExtJS subscription Install Java: https://jdk.java.net/ Install Node.js: https://nodejs.org/en/ Login: npm login --registry=https://npm.sencha.com --scope=@sencha Development Clone the repository cd mycustomer/client7 npm install npm start In another shell cd mycustomer ./mvnw spring-boot:run -Dspring.profiles.active="development" Open URL http://localhost:1962/ in a browser Production Build ./mvnw clean package The file target/mycustomer.jar contains the whole application. Deploy it to a server. Start the application with java -jar <any_folder>/mycustomer.jar By default, the application listens on port 80