springboot报错："Circular view path [set]: would dispatch back to the current handler URL [/set] again. "

错误信息：
"Circular view path [set]: would dispatch back to the current handler URL [/set] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)"

最后在视图解析 controller上面加上@ResponseBody即可解决。