Idea failed to load resource: the server responded with a status of 404 (not found)

Use today idea I found the page when writing the project css Document and js The files are not loaded , Press F12 Check the console for errors

  First check idea Whether there is an error in the project configuration path

  You can see that the path is correct , Then check whether the browser can css Document and js File read out

You can see that although you can find this file , But the contents of the file are empty , This shows that this document is not what we put in idea Medium css file , It is generated automatically according to the path , explain idea Scanning static resources （js,css,images） Something went wrong when

 

  Check springmvc Is there any code about scanning static resources in , Found no

  Add code , Problem solving

    <!--  Static resource processing   css js imgs -->
    <mvc:resources mapping="/sources/**"  location="/sources/"/>