would dispatch back to the current handler URL [/doLogin] again. Check your ViewResolver setup！

前後臺分離開發，前端表單型別和資料庫表名稱不一致報錯

第一次前後端分離專案開發，
先把後端開發完成，測試，部署
然後開發前端.

get請求正常，post請求出錯

報URL異常，檢查跨域請求問題

查了資料發現沒錯，用別的前端請求伺服器請求報同樣的錯誤，檢查後端資料傳輸問題，檢查完都是JSON返回資料沒問題

Postman測試資料，發現本地全部正常，伺服器端報錯

啪！！！！
拍腦門！！！！

果然是資料庫問題，
但是報錯很離譜！

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Circular view path [doLogin]: would dispatch back to the current handler URL [/doLogin] again. Check your ViewResolver setup! (Hint: This may be the result of an unspecified view, due to default view name generation.)] with root cause

javax.servlet.ServletException: Circular view path [doLogin]: would dispatch back to the current handler URL [/doLogin] again. Check your ViewResolver setup! (Hint: This may be the result

記記記！！！