In SpringBoot, SRC/main/directory, 
 ((1) Visit Resources by default 

 Test in the/resources/directory.html file, 
 ((2) Nothing to visit Resources 

 Test in the/static/directory.html file, 
 ((3) Nothing to visit Resources 

 The test in the/public/directory.html file, 
 ((4) No visit to webapp/Test in the directory.html file,(5) If not, you will visit the error in the page.
(Note: SRC 

 Test in the/main/resources/directory.HTML will never be accessed. ) 
 That is, according to the directory structure I have established, from1-4Find in order, and for5Don't find it at all.

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