cd prjocet directory
./gradlew build → .gradlew bootRun
./gradlew build
.gradlew bootRun
./gradlew build → cd build/libs
cd build/libs
java -jar user-service-0.0.1-SNAPSHOT.jar
포트 지정 : java -jar -Dserver.port=9091 user-service-0.0.1-SNAPSHOT.jar
java -jar -Dserver.port=9091 user-service-0.0.1-SNAPSHOT.jar
포트지정 :