his application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Nov 15 16:22:13 CST 2017
There was an unexpected error (type=Internal Server Error, status=500).
Circular view path [hello.html]: would dispatch back to the current handler URL [/hello.html] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name
generation.)
问题出现在将@requestmapping的值和返回值设为相同。虽然后者带.html 后缀但是系统查找的时候会查找很多,不仅仅是.html文件