javax.servlet.ServletException: Circular view path [reg]: would dispatch bac

would dispatch back to the current handler URL [/reg] again. Check your View

Hint: This may be the result of an unspecified view, due to default view

今天搭环境出现这问题，环境都是复制上个项目的，

当然我们肯定不会犯 没有引入模板库的 这些低级错误，几番百度 终于找到解决办法，这里记录下