1、在/etc/systemd/system路径下创建文件 javaservice.service 内容如下：
[Unit]
Description=Java Service
[Service]
User=nobody
# The configuration file application.properties should be here:
WorkingDirectory=/data
ExecStart=/usr/bin/java -Xmx256m -jar application.jar
SuccessExitStatus=143
TimeoutStopSec=10
Restart=on-failure
RestartSec=5
[Install]
WantedBy=multi-user.target
2、重新加载 使得系统识别该服务
systemctl daemon-reload
3、启用服务，使它能够随系统启动
systemctl enable javaservice.service
4、启用后 就可以使用系统命令操作该服务了
systemctl start javaservice
systemctl stop javaservice
systemctl restart javaservice
systemctl status javaservice
