学习ROS_urdf/Tutorials/Using urdf with robot_state_publisher 时遇到的问题

按照官网的教程：http://wiki.ros.org/urdf/Tutorials/Using%20urdf%20with%20robot_state_publisher

学习的时候，在最后launch的时候出现了error：ERROR: cannot launch node of type [r2d2/state_publisher]: can't locate node [state_publisher] in package [r2d2]

最后在这位大神的回答中找到了答案：

http://blog.csdn.net/u013793399/article/details/51851383

就是在CMakelist.txt中添加：

catkin_package()