eclipse plug-in installation spring tools

installation method

https://blog.csdn.net/xiangyuenacha/article/details/82287123

If the display is installed, then namepsaces insufficiency

https://blog.csdn.net/maoziyang1996/article/details/87707066

Bound header file is best not to add the version number

https://blog.csdn.net/chao821/article/details/80869219