# ros2常見錯誤 ## Oracle JDK 11 is NOT installed. ``` rm -f /etc/apt/source.list.d/webupd8team-ubuntu-java-focal.list ``` ``` sudo add-apt-repository --remove ppa:webupd8team/java ``` ``` sudo rm /var/lib/dpkg/info/oracle-java11-installer-local.postinst -f ``` ``` sudo apt update && sudo apt install locales ``` ## ERROR: launchpadlib 1.10.13 requires testresources, which is not installed. Python3 ``` sudo apt install python3-testresources ``` # 建構ros專案常用指令 ## 檢查依賴 https://docs.ros.org/en/foxy/Tutorials/Workspace/Creating-A-Workspace.html 從根目錄執行 ``` # cd if you're still in the ``src`` directory with the ``ros_tutorials`` clone cd .. rosdep install -i --from-path src --rosdistro foxy -y ``` 如果您已經擁有所有依賴項，控制台將返回： ``` #All required rosdeps installed successfully ``` **package.xml 文件中聲明它們的依賴關係** ## 創建專案(py) ``` ros2 pkg create --build-type ament_python py_pubsub ``` ``` ros2 pkg create --build-type ament_python <專案名稱> ```