springboot +gradle 最簡單的傳回modelandview報錯

springboot +gradle 最簡單的傳回modelandview報錯

WARN 1836 — [nio-8080-exec-3] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type ‘java.lang.String’ to required type ‘java.lang.Long’; nested exception is java.lang.NumberFormatException: For input string: “list”]