解决ROS系统中节点无法启动的问题

在调试中出现ROS节点无法启动的问题报错

Usage: rosrun [--prefix cmd] [--debug] PACKAGE EXECUTABLE [ARGS]
rosrun will locate PACKAGE and try to find
an executable named EXECUTABLE in the PACKAGE tree.
If it finds it, it will run it with ARGS.

处理方法就是把节点文件直接移到PACKAGE的下一级文件下