ROS中 ERROR: cannot launch node of type [joint_state_publisher/joint_state_publisher]: joint_state_pu

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问题如下

ERROR: cannot launch node of type [joint_state_publisher/joint_state_publisher]: joint_state_publisher
ROS path [0]=/opt/ros/melodic/share/ros
ROS path [1]=/home/fulei/ares/src
ROS path [2]=/opt/ros/melodic/share

问题原因

原因是缺少依赖包robot_state_publisher

解决方法

我的是ubuntu18.04，ros版本为melodic

终端输入：
sudo apt-get install ros-melodic-robot-state-publisher

如果提示定位不到的话，建议检查一下ros的源，原因大部分是源不对，或者再添加一遍密钥就行了。

sudo sh -c 'echo "deb https://mirrors.tuna.tsinghua.edu.cn/ros/ubuntu $(lsb_release -sc) main" > /etc/apt/sources.list.d/ros-latest.list'

sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654

最后更新一下

sudo apt-get update