启动hadoop：/usr/local/hadoop/sbin/start-all.sh
关闭hadoop：/usr/local/hadoop/sbin/stop-all.sh
启动spark：/usr/local/spark/sbin/start-all.sh
关闭spark：/usr/local/spark/sbin/stop-all.sh
启用python环境：conda activate rec1
使用start_server.sh启动程序 ./start_server.sh
更新了新建用户评分并更新协同过滤算法的按钮和查看用户对特定书籍的评分按钮