SpringMVC Could not find acceptable representation

15-May-2022 03:06:02.415 警告 [http-nio-8080-exec-6] org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.logException Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]

原因是没有导入jackson依赖，spring无法转换JSON格式数据，并不是因为映射地址和方法名重复