[Unit]
Description=A Spring Boot application
After=syslog.target

[Service]
User=root
ExecStart=/home/projet/api/java-api-0.1.jar

[Install]
WantedBy=multi-user.target

[(DANS : ) /etc/systemd/system]
[-rwxr-xr-x 1 root root 44823539 avril 18 20:17 java-api-0.1.jar]
[chmod 755 java-api-0.1.jar]