问题：Cannot deserialize value of type `java.util.Date` from String "2020-06-16"

一、问题描述

1.异常信息

org.springframework.http.converter.HttpMessageNotReadableException: 
JSON parse error:Cannot deserialize value of type `java.util.Date` from String "2020-06-16": not a valid representation (error: Failed to parse Date value '2020-06-16': Unparseable date: "2020-06-16"); 
nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "2020-06-16": not a valid representation (error: Failed to parse Date value '2020-06-16': Unparseable date: "2020-06-16")

2.报错原因

1）服务器用@RequestBody接收数据时，前端传的格式是yyyy-MM-dd；
2）异常描述：反序列化失败，yyyy-MM-dd不是有效的格式。

二、解决方案

给对应实体属性添加@JsonFormat注释，pattern格式要与前端一致。

@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd" , timezone = "GMT+8")
private Date date;